SpaceX Dragon 2 explained
Dragon 2 |
Country: | United States |
Operator: | SpaceX |
Applications: | ISS crew and cargo transport; private spaceflight |
Manufacturer: | SpaceX |
Launch Mass: | [1] |
Payload Capacity: | - to orbit[2]
- to ISS
- return cargo
- disposed cargo
|
Crew Capacity: | 2–4 (normal operations) 7 (emergency evacuation)[3] |
Dimensions: | - Diameter:
- Height: with trunk
- Sidewall angle: 15°
|
Volume: | |
Power: | 28V and 120VDC buses 1.5-2kW solar array[4] |
Batteries: | 4 × lithium polymer |
Equipment: | Crews and pressurized as well as unpressurized logistics |
Orbits: | LEO |
Launch Vehicle: | Falcon 9 Block 5 |
Design Life: | - 10 days (free flight)[5]
- 210 days (docked to ISS)[6]
|
Stagedata: | Thruster details | Engines: | | Thrust: | - Draco: 16 ×
- SuperDraco: 8 ×
| Si: | Draco: | Propmass: | [7] | Fuel: | / [8] |
|
Status: | Active |
Built: | 12 (6 crew, 3 cargo, 3 prototypes) |
Orders: | 1 (crew) |
Operational: | 8 (4 crew, 3 cargo, 1 prototype) |
Retired: | 3 (1 crew, 2 prototypes) |
Lost: | 1 (Crew Dragon) (uncrewed) |
First: | - 2 March 2019 (uncrewed test)
- 30 May 2020 (crewed)
- 6 December 2020 (cargo)
|
Derivedfrom: | SpaceX Dragon 1 |
Preceded: | SpaceX Dragon 1 |
Dragon 2 is a class of partially reusable spacecraft developed, manufactured, and operated by American space company SpaceX, for flights to the International Space Station (ISS) and private spaceflight missions. There are two variants of the Dragon spacecraft: Crew Dragon, capable of ferrying four crewmembers, and Cargo Dragon, a replacement for the original Dragon 1 used to carry freight to and from space. The spacecraft consists of a reusable space capsule and an expendable trunk module. The spacecraft launches atop a Falcon 9 Block 5 rocket and the capsule returns to Earth through splashdown. It has proven to be the most cost effective spacecraft in history to be used by NASA.[9]
Cargo Dragon supplies cargo to the ISS under a Commercial Resupply Services-2 contract with NASA. The first flight of Dragon 2 in a cargo configuration launched in December 2020. It shares this duty with Northrop Grumman's Cygnus spacecraft, and Sierra Nevada Corporation's Dream Chaser spaceplane is expected to join them .[10] As of July 2023, it is the only reusable orbital cargo spacecraft in operation.
Crew Dragon's primary role is to transport crews to and from the ISS under NASA's Commercial Crew Program, succeeding the crew orbital transportation capabilities of the Space Shuttle, which retired from service in 2011. It is joined by Boeing's Starliner in this role. Crew Dragon is also used for commercial flights, some of them to the ISS, and is expected to be used to shuttle people to and from Axiom Space's planned space station.
Development and variants
There are two variants of Dragon 2: Crew Dragon and Cargo Dragon.[11] Crew Dragon was initially called "DragonRider"[12] [13] and it was intended from the beginning to support a crew of seven or a combination of crew and cargo.[14] [15] Earlier spacecraft had a berthing port and were berthed to ISS by ISS personnel. Dragon 2 instead has an IDSS-compatible docking port to dock to the International Docking Adapter ports on ISS. It is able to perform fully autonomous rendezvous and docking with manual override ability.[16] [17] For typical missions, Crew Dragon will remain docked to the ISS for a nominal period of 180 days, but is designed to remain on the station for up to 210 days, matching the Russian Soyuz spacecraft.[18] [19] [20] [21] [22] [23] SpaceX uses the Falcon 9 Block 5 launch vehicle to launch Dragon 2.[2]
Crew Dragon
Crew Dragon incorporates an integrated pusher launch escape system consisting of eight SuperDraco engines, capable of accelerating the capsule away from the launch vehicle in an emergency. SpaceX originally intended to use the SuperDraco engines to land Crew Dragon on land, with parachutes and an ocean splashdown employed only in the case of an aborted launch. Precision water landing under parachutes was proposed to NASA as "the baseline return and recovery approach for the first few flights" of Crew Dragon.[24] Propulsive landing was later cancelled, leaving ocean splashdown under parachutes as the only option.[25]
In 2012, SpaceX was in talks with Orbital Outfitters about developing space suits to wear during launch and re-entry.[26] Each crew member wears a custom space suit fitted for them. The suit is primarily designed for use inside the Dragon (IVA type suit): however, in the case of a rapid cabin depressurization, the suit can protect the crew members. The suit can also provide cooling for astronauts during normal flight.[27] [28] For the Demo-1 mission, a test dummy was fitted with the spacesuit and sensors. The spacesuit is made from Nomex, a fire retardant fabric similar to Kevlar.
The spacecraft's design was unveiled on 29 May 2014, during a press event at SpaceX headquarters in Hawthorne, California.[29] [30] [31] In October 2014, NASA selected the Dragon spacecraft as one of the candidates to fly American astronauts to the International Space Station, under the Commercial Crew Program.[32] [33] In March 2022, SpaceX President Gwynne Shotwell told Reuters that "We are finishing our final (capsule), but we still are manufacturing components, because we'll be refurbishing".[34] SpaceX later decided to build a fifth Crew Dragon capsule, to be available by 2024. SpaceX also manufactures a new expendable trunk for each flight.
SpaceX's CCtCap contract values each seat on a Crew Dragon flight to be around US$88 million,[35] while the face value of each seat has been estimated by NASA's Office of Inspector General (OIG) to be around US$55 million.[36] [37] [38] This contrasts with the 2014 Soyuz launch price of US$76 million per seat for NASA astronauts.[39]
Cargo Dragon
Although Dragon 2 was intended from the earliest design concept to carry crew, or with fewer seats, both crew and cargo, a second round of multi-year cargo supply contracts (also known as CRS-2) was solicited by NASA in 2014, to supply the ISS in 2020–2024. This led to SpaceX proposing a separately-named model, Cargo Dragon, for this mission.[40] SpaceX won a contract award for Cargo Dragon as a result of the CRS-2 bid competition, with contracts awarded in January 2016 for six flights., Cargo Dragon has completed 9 successful missions to and from the ISS with 6 more planned.
Cargo Dragons are different from the crewed variant by launching without seats, cockpit controls, astronaut life support systems, and SuperDraco abort engines.[41] [42] Cargo Dragon improves on many aspects of the original Dragon design, including the recovery and refurbishment process.[43]
Announced on 29 August 2021 during the CRS-23 launch is a new feature called Extend-the-Lab installed in the Cargo Dragon. "Our new Cargo Dragon vehicle is also able to act as a laboratory in the advancement of science and research. We call this capability Extend-the-Lab. It allows some powered payloads to remain on Dragon for experimentation during the duration of the mission. This is especially helpful when there is limited to no space on station for additional science. And it also helps cut down the amount of time the crew has to move payloads in and out of Dragon. For CRS-23 there are 3 Extend-the-Lab payloads launching with the mission, and once docked, a 4th which is currently already on the space station will be added to Dragon".
The ISS Deorbit Vehicle is a planned, specially modified Cargo Dragon that will be used to deorbit the ISS and direct any remnants into a remote area of the South Pacific Ocean that has come to be known as the spacecraft cemetery.[44] The vehicle will attach to the ISS using one of the Cargo Dragon vehicles, which will be paired with a significantly lengthened trunk module which will be equipped with 46 Draco thrusters (instead of the normal 16) and will carry 30000kg (70,000lb) of propellant, nearly six times the normal load. NASA plans to launch the deorbit vehicle in 2030 where it will remain attached, dormant, for about a year as the station's orbit naturally decays to . The spacecraft would then conduct one or more orientation burns to lower the perigee to, followed by a final deorbiting burn.[45] In June 2024, NASA awarded a contract worth up to $843 million to SpaceX to build the deorbit vehicle as it works to secure funding.[46] [47]
Design
Aligned with SpaceX's goal to dramatically lower space transportation costs, Dragon 2 was designed for reusability, significantly reducing expenses associated with spacecraft production. Composed of a reusable capsule and a disposable trunk, Dragon 2 represents a departure from previous spacecraft that were typically expended after a single use, even upon return to Earth.
SpaceX and NASA initially certified the capsule to be used for five missions. they are working to certify it for up to fifteen missions.[48]
To maximize cost-effectiveness, SpaceX incorporated several innovative design choices. The Crew Dragon employs eight side-mounted SuperDraco engines for its emergency escape system, eliminating the need for a traditional, disposable escape tower. Furthermore, instead of housing the critical and expensive environmental control and propellant storage systems in a disposable service module, Dragon 2 integrates them within the reusable capsule.The trunk serves as an adapter between the capsule and the Falcon 9 rocket's second stage and also includes solar panels, a heat-dissipation radiator, and fins to provide aerodynamic stability during emergency aborts. Dragon 2 integrates solar arrays directly into the trunk's structure, replacing the deployable panels of its predecessor, Dragon 1. The trunk can also accommodate unpressurized cargo, such as the Roll Out Solar Array transported to the ISS.
The typical Crew Dragon mission includes four astronauts: a commander who leads the mission and has primary responsibility for operating the spacecraft, a pilot who serves as backup for both command and operations, and two mission specialists who may have specific duties assigned depending on the mission. However, the Crew Dragon can fly missions with just two astronauts as needed, and in an emergency, up to seven astronauts could return to earth from the ISS.
On the ground, crews enter the capsule through a side hatch.
On the Crew Dragon, above the two center seats (occupied by the commander and pilot) there is a three-screen control panel. The two side seats (occupied by the mission specialists) have windows. Below the seats is the cargo pallet, where up to 500lb of items can be stowed.[49] In the ceiling there is a small space toilet (with privacy curtain),[50] and International Docking System Standard (IDSS) port are located on the capsule's ceiling. For missions not requiring ISS docking, the IDSS port can be replaced with a 1.2-meter domed plexiglass window offering panoramic views, similar to the ISS Cupola.[51] Additionally, SpaceX has developed a "Skywalker" hatch for missions involving extravehicular activities.[52]
The Cargo Dragon is also loaded from the side hatch and has an IDSS port on the ceiling. However it lacks the control panels, windows, and seats of the Crew Dragon.
The spacecraft can be operated in full vacuum, and "the crew will wear SpaceX-designed space suits to protect them from a rapid cabin depressurization emergency event". The spacecraft has also been designed to be able to land safely with a leak "of up to an equivalent orifice of in diameter".
The spacecraft's nose cone protects the docking port and four forward-facing thrusters during ascent and reentry. This component pivots open for in-space operations. Dragon 2's propellant and helium pressurant for emergency abort and orbital maneuvers are stored in composite-carbon-overwrap titanium spherical tanks at the capsule's base.
For launch aborts, the capsule relies on eight SuperDraco engines arranged in four redundant pairs. Each engine generates of thrust. Sixteen smaller Draco thrusters placed around the spacecraft control its attitude and perform orbital maneuvers.When the capsule returns to Earth, a PICA-X heat shield safeguards the capsule during reentry. Dragon 2 uses a total of six parachutes (two drogues and four mains) to decelerate after atmospheric entry and before splashdown, compared to the five used by Dragon 1. The additional parachute was a required by NASA as a safety measure after a Dragon 1 suffered a parachute malfunction. The company also went through two rounds of parachute development before being certified to fly with crew.
Crewed flights
Crew Dragon is used by both commercial and government customers. Axiom launches commercial astronauts to the ISS and intends to eventually launch to their own private space station. NASA flights to the ISS have four astronauts, with the added payload mass and volume used to carry pressurized cargo.[53]
On 16 September 2014, NASA announced that SpaceX and Boeing had been selected to provide crew transportation to the ISS. SpaceX was to receive up to US$2.6 billion under this contract, to provide development test flights, and up to six operational flights.[54] Dragon was the less expensive proposal,[55] but NASA's William H. Gerstenmaier considered the Boeing Starliner proposal the stronger of the two. However, Crew Dragon's first operational flight, SpaceX Crew-1, was on 16 November 2020 after several test flights while Starliner suffered multiple problems and delays, with its first operational flight slipping to no earlier than early 2025.[56]
In a departure from the prior NASA practice, where construction contracts with commercial firms led to direct NASA operation of the spacecraft, NASA is purchasing space transport services from SpaceX, including construction, launch, and operation of the Dragon 2.
In August 2018, NASA and SpaceX agreed on the loading procedures for propellants, vehicle fluids and crew. High-pressure helium will be loaded first, followed by the passengers approximately two hours prior to scheduled launch; the ground crew will then depart the launch pad and move to a safe distance. The launch escape system will be activated approximately 40 minutes prior to launch, with propellant loading commencing several minutes later.[57]
The first automated test mission launched to the International Space Station (ISS) on 2 March 2019.[58] After schedule slips,[59] the first crewed flight launched on 30 May 2020[60] with the launch of the Demo-2 mission.
In June 2019, Bigelow Aerospace announced it had reserved with SpaceX up to four missions of four passengers each to the ISS as early as 2020 and planned to sell them for around US$52 million per seat.[61] These plans were cancelled by September 2019.
Space Adventures contracted SpaceX for a five-day high elliptic orbit space tourism mission with a Crew Dragon in 2022.[62] [63] In October 2021, Space Adventures stated that the contract had expired and would not be executed, but left open the possibility of a partnership with SpaceX in the future.[64]
Testing
SpaceX planned a series of four flight tests for the Crew Dragon: a pad abort test, an unmanned orbital flight to the ISS, an in-flight abort test, and finally a crewed flight to the ISS,[65] which was initially planned for July 2019,[59] but after a Dragon capsule explosion, was delayed to May 2020.[66]
Pad abort test
See main article: Dragon 2 Pad Abort Test.
The pad abort test was conducted successfully on 6 May 2015 at SpaceX's leased SLC-40 launch site. Dragon landed safely in the ocean to the east of the launchpad 99 seconds after ignition of the SuperDraco engines.[67] While a flight-like Dragon 2 and trunk were used for the pad abort test, they rested atop a truss structure for the test rather than a full Falcon 9 rocket. A crash test dummy embedded with a suite of sensors was placed inside the test vehicle to record acceleration loads and forces at the crew seat, while the remaining six seats were loaded with weights to simulate full-passenger-load weight.[68] The test objective was to demonstrate sufficient total impulse, thrust and controllability to conduct a safe pad abort. A fuel mixture ratio issue was detected after the flight in one of the eight SuperDraco engines causing it to under perform, but did not materially affect the flight.[69] [70] [71]
On 24 November 2015, SpaceX conducted a test of Dragon 2's hovering abilities at the firm's rocket development facility in McGregor, Texas. In a video, the spacecraft is shown suspended by a hoisting cable and igniting its SuperDraco engines to hover for about 5 seconds, balancing on its 8 engines firing at reduced thrust to compensate exactly for gravity.[72] The test vehicle was the same capsule that performed the pad abort test earlier in 2015; it was nicknamed DragonFly.[73]
Demo-1: orbital flight test
See main article: Crew Dragon Demo-1.
In 2015, NASA named its first Commercial Crew astronaut cadre of four veteran astronauts to work with SpaceX and Boeing – Robert Behnken, Eric Boe, Sunita Williams, and Douglas Hurley.[74] The Demo-1 mission completed the last milestone of the Commercial Crew Development program, paving the way to starting commercial services under an upcoming ISS Crew Transportation Services contract.[75] [76] On 3 August 2018, NASA announced the crew for the DM-2 mission.[77] The crew of two consisted of NASA astronauts Bob Behnken and Doug Hurley. Behnken previously flew as mission specialist on the STS-123 and the STS-130 missions. Hurley previously flew as a pilot on the STS-127 mission and on the final Space Shuttle mission, STS-135.[78]
The first orbital test of Crew Dragon was an uncrewed mission, commonly called "Demo-1" and launched on 2 March 2019.[79] [80] The spacecraft tested the approach and automated docking procedures with the ISS,[81] remained docked until 8 March 2019, then conducted the full re-entry, splashdown and recovery steps to qualify for a crewed mission.[82] [83] Life-support systems were monitored for the entirety the test flight. The same capsule was planned to be re-used in June 2019 for an in-flight abort test before it exploded on 20 April 2019.[79] [84]
Explosion during testing
On 20 April 2019,, the capsule used in the Demo-1 mission, was destroyed in an explosion during static fire testing at the Landing Zone 1 facility.[85] [86] On the day of the explosion, the initial testing of the Crew Dragon's Draco thrusters was successful, with the anomaly occurring during the test of the SuperDraco abort system.[87]
Telemetry, high-speed camera footage, and analysis of recovered debris indicate the problem occurred when a small amount of dinitrogen tetroxide leaked into a helium line used to pressurize the propellant tanks. The leakage apparently occurred during pre-test processing. As a result, the pressurization of the system 100 ms before firing damaged a check valve and resulted in the explosion.[87] [88]
SpaceX modified the Dragon 2 replacing check valves with burst discs, which are designed for single use, and the adding of flaps to each SuperDraco to seal the thrusters prior to splashdown, preventing water intrusion.[89] The SuperDraco engine test was repeated on 13 November 2019 with . The test was successful, showing that the modifications made to the vehicle were successful.[90]
Since the destroyed capsule had been slated for use in the upcoming in-flight abort test, the explosion and investigation delayed that test and the subsequent crewed orbital test.[91]
In-flight abort test
See main article: Crew Dragon In-Flight Abort Test.
The Crew Dragon in-flight abort test was launched on 19 January 2020 at 15:30 UTC from LC-39A on a suborbital trajectory to conduct a separation and abort scenario in the troposphere at transonic velocities shortly after passing through max Q, where the vehicle experiences maximum aerodynamic pressure. The Dragon 2 used its SuperDraco abort engines to push itself away from the Falcon 9 after an intentional premature engine cutoff, after which the Falcon was destroyed by aerodynamic forces. The Dragon followed its suborbital trajectory to apogee, at which point the spacecraft's trunk was jettisoned. The smaller Draco engines were then used to orient the vehicle for the descent. All major functions were executed, including separation, engine firings, parachute deployment, and landing.
Dragon 2 splashed down at 15:38:54 UTC just off the Florida coast in the Atlantic Ocean.[92] The test objective was to demonstrate the ability to safely move away from the ascending rocket under the most challenging atmospheric conditions of the flight trajectory, imposing the worst structural stress of a real flight on the rocket and spacecraft. The abort test was performed using a Falcon 9 Block 5 rocket with a fully fueled second stage with a mass simulator replacing the Merlin engine.[93]
Earlier, this test had been scheduled before the uncrewed orbital test,[94] however, SpaceX and NASA considered it safer to use a flight representative capsule rather than the test article from the pad abort test.[95]
This test was previously planned to use the capsule C204 from Demo-1, however, C204 was destroyed in an explosion during a static fire testing on 20 April 2019.[96] Capsule C205, originally planned for Demo-2 was used for the In-Flight Abort Test[97] with C206 being planned for use during Demo-2. This was the final flight test of the spacecraft before it began carrying astronauts to the International Space Station under NASA's Commercial Crew Program.
Prior to the flight test, teams completed launch day procedures for the first crewed flight test, from suit-up to launch pad operations. The joint teams conducted full data reviews that needed to be completed prior to NASA astronauts flying on the system during SpaceX's Demo-2 mission.[98]
Demo-2: crewed orbital flight test
See main article: Crew Dragon Demo-2. On 17 April 2020, NASA Administrator Jim Bridenstine announced the first crewed Crew Dragon Demo-2 to the International Space Station would launch on 27 May 2020.[99] Astronauts Bob Behnken and Doug Hurley crewed the mission, marking the first crewed launch to the International Space Station from U.S. soil since STS-135 in July 2011. The original launch was postponed to 30 May 2020 due to weather conditions at the launch site.[100] The second launch attempt was successful, with capsule C206, later named Endeavour by the crew, launching on 30 May 2020 19:22 UTC.[101] [102] The capsule successfully docked with the International Space Station on 31 May 2020 at 14:27 UTC.[103] [104] [105] On 2 August 2020, Crew Dragon undocked and splashed-down successfully in the Atlantic Ocean. Launching in the Dragon 2 spacecraft was described by astronaut Bob Behnken as "smooth off the pad" but "we were definitely driving and riding a dragon all the way up ... a little bit less g's [than the [[Space Shuttle]]] but more 'alive' is probably the best way I would describe it".[106]
Regarding descent in the spacecraft, Behnken stated, "Once we descended a little bit into the atmosphere, Dragon really came alive. It started to fire thrusters and keep us pointed in the appropriate direction. The atmosphere starts to make noise—you can hear that rumble outside the vehicle. And as the vehicle tries to control, you feel a little bit of that shimmy in your body. ... We could feel those small rolls and pitches and yaws—all those little motions were things we picked up on inside the vehicle. ... All the separation events, from the trunk separation through the parachute firings, were very much like getting hit in the back of the chair with a baseball bat ... pretty light for the trunk separation but with the parachutes it was a pretty significant jolt".[107]
List of vehicles
List of flights
List includes only completed or currently manifested missions. Dates are listed in UTC, and for future events, they are the earliest possible opportunities (also known as dates) and may change.
Crew Dragon flights
Cargo Dragon flights
Mission and Patch | Capsule[158] | Launch date | Landing date | Description | Outcome |
---|
| C208.1 | 6 December 2020, 16:17 | 14 January 2021 | First SpaceX mission performed under the CRS-2 contract with NASA and the first flight of Cargo Dragon 2. Delivered the Nanoracks Bishop Airlock module to the ISS along with of cargo. | |
| C209.1 | 3 June 2021, 17:29 | 10 July 2021 | Also delivered solar arrays iROSA 1 and iROSA 2 | |
| C208.2 ♺ | 29 August 2021, 07:14 | 1 October 2021 | | |
| C209.2 ♺ | 21 December 2021, 10:07 | 24 January 2022 | | |
| C208.3 ♺ | 15 July 2022, 00:44 | 20 August 2022 | | |
| C211.1 | 26 November 2022, 19:20[159] | 11 January 2023 | Also delivered solar arrays iROSA 3 and iROSA 4.[160] | |
| C209.3 ♺ | 15 March 2023, 00:30[161] | 15 April 2023 | | |
| C208.4 ♺ | 5 June 2023, 15:47[162] | 30 June 2023 | Also delivered solar arrays iROSA 5 and iROSA 6[163] With this mission, Dragon 2 fleet's 1,324 days in orbit surpassed the Space Shuttle. This was the 38th Dragon mission to ISS, surpassing the Shuttle's 37.[164] | |
| C211.2 ♺ | 10 November 2023, 01:28[165] | 22 December 2023 | | |
| C209.4 ♺ | 21 March 2024, 20:55[166] | 30 April 2024 | First Dragon 2 launch from SLC-40 | |
| C208.5 ♺ | Mid-October 2024 | | | |
CRS-32 | C211.3 ♺ | December 2024 (planned) | | | |
CRS-33 | TBA | March 2025 (planned) | | | |
CRS-34 | TBA | Q3 2025 (planned) | | | |
CRS-35 | TBA | 2026 (planned)[167] | | | |
United States Deorbit Vehicle | TBA | 2030 (planned)[168] | | To deorbit the ISS after it is decommissioned. | | |
Timeline
Crew Dragon has flown eight operational CCP missions and six other missions. Cargo Dragon has flown ten missions.
See also
External links
Notes and References
- Web site: Heiney. Anna. Top 10 Things to Know for NASA's SpaceX Demo-2 Return. nasa.gov. 23 July 2020. 24 July 2020. At the time of undock, Dragon Endeavour and its trunk weigh approximately 27,600 pounds.
- Web site: Dragon. SpaceX. 1 March 2019. SpaceX. 3 March 2019. 2 March 2019. https://web.archive.org/web/20190302235320/https://www.spacex.com/dragon. live.
- News: Howell . Elizabeth . 2024-08-09 . Will SpaceX carry Boeing Starliner crew home? Here’s how Dragon could do it . 2024-08-19 . en.
- Web site: Rauf . Jim . Fall 2023 . SpaceX Dragon Spacecraft . University of Cincinnati .
- Web site: DragonLab datasheet. 8 September 2009. SpaceX. Hawthorne, California. dead. https://web.archive.org/web/20110104010401/http://www.spacex.com/downloads/dragonlab-datasheet.pdf. 4 January 2011.
- Web site: NASA, SpaceX to Launch First Astronauts to Space Station from U.S. Since 2011. NASA. 20 June 2024.
- Web site: Final Environmental Assessment and Finding of No Significant Impact for Issuing SpaceX a Launch License for an In-Flight Dragon Abort Test. June 2019. Federal Aviation Administration. 25 September 2022.
- Web site: The Annual Compendium of Commercial Space Transportation: 2012. February 2012. Federal Aviation Administration. 16 September 2014. 19 June 2013. https://web.archive.org/web/20130619213345/http://www.faa.gov/about/office_org/headquarters_offices/ast/media/The_Annual_Compendium_of_Commercial_Space_Transporation_2012.pdf. live.
- Web site: 2020-06-08 . Infographic: Why SpaceX Is A Game Changer For NASA . 2024-04-26 . Statista Daily Data . en.
- Web site: Dream Chaser Lifting Body Set For Delivery To NASA Ahead Of 2024 Launch Aviation Week Network . 2023-12-08 . aviationweek.com.
- https://oig.nasa.gov/docs/IG-18-016.pdf Audit of Commercial Resupply Services to the International Space Station
- Web site: Final Environmental Assessment for Issuing an Experimental Permit to SpaceX for Operation of the DragonFly Vehicle at the McGregor Test Site, McGregor, Texas. 2–3. FAA. 22 August 2014. 1 February 2017. https://web.archive.org/web/20170201175223/https://www.faa.gov/about/office_org/headquarters_offices/ast/media/dragonfly_final_ea_sm.pdf. live.
- Gwynne Shotwell. Broadcast 2212: Special Edition, interview with Gwynne Shotwell. 21 March 2014. 22 March 2014. https://web.archive.org/web/20140322013556/http://archived.thespaceshow.com/shows/2212-BWB-2014-03-21.mp3. 22 March 2014. 24:05–24:45 and 28:15–28:35. The Space Show. 2212. we call it v2 for Dragon. That is the primary vehicle for crew, and we will retrofit it back to cargo. dead.
- Web site: Q+A: SpaceX Engineer Garrett Reisman on Building the World's Safest Spacecraft. 13 April 2012. PopSci . DragonRider, SpaceX's crew-capable variant of its Dragon capsule. 15 April 2012. 16 April 2012. https://web.archive.org/web/20120416023934/http://www.popsci.com/technology/article/2012-04/qa-former-astronaut-and-spacex-engineer-garrett-reisman-building-worlds-safest-spacecraft. live.
- Web site: SpaceX Completes Key Milestone to Fly Astronauts to International Space Station. 20 October 2011. SpaceX. 9 May 2012. https://web.archive.org/web/20120503032852/http://www.spacex.com/press.php?page=20111020. 3 May 2012. dead.
- Web site: Dragon Overview. SpaceX. 16 April 2012 . 5 April 2013. https://web.archive.org/web/20130405074247/https://spacex.com/dragon.php. live.
- Web site: Overview of the NASA Docking System and the International Docking System Standard. Parma. George. 20 March 2011. NASA. iLIDS was later renamed the NASA Docking System (NDS), and will be NASA's implementation of an IDSS compatible docking system for all future U.S. vehicles. 30 March 2012 . dead. https://web.archive.org/web/20111015075220/http://dockingstandard.nasa.gov/Documents/AIAA_ATS_NDS-IDSS_Overview_Draft1.pdf. 15 October 2011.
- Web site: Commercial Crew Program: Key Driving Requirements Walkthrough. Bayt. Rob. 16 July 2011 . NASA. 27 July 2011. dead. https://web.archive.org/web/20120328055242/http://commercialcrew.nasa.gov/document_file_get.cfm?docid=107. 28 March 2012.
- Web site: Space station trip will push the envelope. Oberg. Jim. 28 March 2007. NBC News. 9 May 2012. 10 July 2020. https://web.archive.org/web/20200710045514/http://www.nbcnews.com/id/17815821. dead.
- Web site: 2012-05-09_NASA_Response. Bolden. Charles. 9 May 2012. NASA. 20 June 2012. 15 February 2013. https://web.archive.org/web/20130215194938/http://oiir.hq.nasa.gov/asap/documents/responses/nasa/2012-05-09_NASA_Response.pdf. dead.
- With the exception of the Project Gemini spacecraft, which used twin ejection seats: "Encyclopedia Astronautica: Gemini Ejection" Astronautix.com Retrieved 24 January 2013
- News: Chow. Denise. Private Spaceship Builders Split Nearly US$270 Million in NASA Funds. 18 December 2011 . Space.com. 18 April 2011. https://web.archive.org/web/20111231133929/http://www.space.com/11421-nasa-private-spaceship-funding-astronauts.html. 31 December 2011. dead.
- https://web.archive.org/web/20101215151136/http://cosmiclog.msnbc.msn.com/_news/2010/12/13/5645709-spaceship-teams-seek-more-funding "Spaceship teams seek more funding"
- Web site: Reisman . Garrett . 27 February 2015 . Statement of Garrett Reisman, Director of Crew Operations, Space Explorations Technologies Corp. (SpaceX) before the Subcommittee on Space, Committee on Science, Space, and Technology, U.S. House of Representatives . live . https://web.archive.org/web/20200605163309/https://science.house.gov/imo/media/doc/Reisman%20Testimony.pdf . 5 June 2020 . 5 June 2020 . United States House of Representatives, Committee on Science, Space, and Technology.
- Web site: SpaceX Updates – Taking the next step: Commercial Crew Development Round 2. SpaceX. 17 January 2010 . 17 January 2011. 27 July 2013. https://web.archive.org/web/20130727153858/http://www.spacex.com/updates.php. live.
- Web site: The Deep-Space Suit. Sofge. Eric. 19 November 2012. PopSci. 19 November 2012. 27 November 2012. https://web.archive.org/web/20121127172503/http://www.popsci.com/technology/article/2012-10/deep-space-suit. live.
- Web site: Dragon. SpaceX. 4 March 2019. 2 March 2019. https://web.archive.org/web/20190302235320/https://www.spacex.com/dragon. live.
- Web site: A First Look at the Spacesuits of the Future. Gibbens. Sarah. National Geographic. 4 March 2019. 6 March 2019. https://web.archive.org/web/20190306045202/https://www.nationalgeographic.com.au/space/a-first-look-at-the-spacesuits-of-the-future.aspx. dead.
- News: Norris. Guy. SpaceX Unveils 'Step Change' Dragon 'V2'. 30 May 2014. Aviation Week. 30 May 2014. 31 May 2014. https://web.archive.org/web/20140531110355/http://aviationweek.com/space/spacex-unveils-step-change-dragon-v2. live.
- News: Kramer. Miriam. SpaceX Unveils Dragon V2 Spaceship, a Manned Space Taxi for Astronauts — Meet Dragon V2: SpaceX's Manned Space Taxi for Astronaut Trips. 30 May 2014. Space.com. 30 May 2014. 20 February 2017. https://web.archive.org/web/20170220092038/http://www.space.com/26063-spacex-unveils-dragon-v2-manned-spaceship.html. live.
- News: SpaceX lifts the lid on the Dragon V2 crew spacecraft. 30 May 2014. Bergin. Chris. NASAspaceflight.com. 30 May 2014. 31 May 2014. https://web.archive.org/web/20140531104755/http://www.nasaspaceflight.com/2014/05/spacex-lifts-the-lid-dragon-v2-crew-spacecraft/. live.
- Web site: NASA Selects SpaceX to be Part of America's Human Spaceflight Program. Post. Hannah . 16 September 2014. SpaceX. 3 March 2019 . 15 March 2019. https://web.archive.org/web/20190315165820/https://www.spacex.com/news/2014/09/16/nasa-selects-spacex-be-part-americas-human-spaceflight-program. live.
- News: So SpaceX is having quite a year. Berger. Eric. 9 June 2017. 9 June 2017. Ars Technica. 9 June 2017. https://web.archive.org/web/20170609161325/https://arstechnica.com/science/2017/06/so-spacex-is-having-quite-a-year/. live.
- News: Roulette . Joey . 2022-03-28 . EXCLUSIVE SpaceX ending production of flagship crew capsule . en . Reuters . 2022-03-28.
- Web site: Potter . Sean . Aug 31, 2022 . NASA Awards SpaceX More Crew Flights to Space Station . NASA.gov . . This is a firm fixed-price, indefinite-delivery/indefinite-quantity contract modification for the Crew-10, Crew-11, Crew-12, Crew-13, and Crew-14 flights. The value of this modification for all five missions and related mission services is $1,436,438,446. The amount includes ground, launch, in-orbit, and return and recovery operations, cargo transportation for each mission, and a lifeboat capability while docked to the International Space Station. The period of performance runs through 2030 and brings the total CCtCap contract value with SpaceX to $4,927,306,350.
- Web site: McCarthy. Niall. Why SpaceX Is A Game Changer For NASA [Infographic]]. Forbes. 27 June 2020. https://web.archive.org/web/20200627030645/https://www.forbes.com/sites/niallmccarthy/2020/06/04/why-spacex-is-a-game-changer-for-nasa-infographic/#71bde5216ff2. 27 June 2020. 4 June 2020. According to the NASA audit, the SpaceX Crew Dragon's per-seat cost works out at an estimated $55 million while a seat on Boeing's Starliner is approximately $90 million .... live.
- Web site: McFall-Johnsen. Morgan. Mosher. Dave. Secon. Holly. SpaceX is set to launch astronauts on Wednesday. Here's how Elon Musk's company became NASA's best shot at resurrecting American spaceflight. Business Insider. 27 June 2020. https://web.archive.org/web/20200627031056/https://www.businessinsider.com.au/spacex-boeing-nasa-commercial-crew-program-launch-astronauts-2020-1. 27 June 2020. 26 January 2020. Eventually, a round-trip seat on the Crew Dragon is expected to cost about $US55 million. A seat on Starliner will cost about $US90 million. That's according to a November 2019 report from the NASA Office of Inspector General.. live.
- Web site: Wall. Mike. Here's How Much NASA Is Paying Per Seat on SpaceX's Crew Dragon & Boeing's Starliner. Space.com. 27 June 2020. https://web.archive.org/web/20200627031359/https://www.space.com/spacex-boeing-commercial-crew-seat-prices.html. 27 June 2020 . 16 November 2019. NASA will likely pay about $90 million for each astronaut who flies aboard Boeing's CST-100 Starliner capsule on International Space Station (ISS) missions, the report estimated. The per-seat cost for SpaceX's Crew Dragon capsule, meanwhile, will be around $55 million, according to the OIG's calculations.. live.
- Web site: SpaceX scrubs launch to ISS over rocket engine problem. Deccan Chronicle. 19 May 2012. 23 May 2012. dead. https://web.archive.org/web/20120523003837/http://www.deccanchronicle.com/channels/sci-tech/space/spacex-scrubs-launch-iss-over-rocket-engine-problem-933. 23 May 2012.
- News: NASA lines up four additional CRS missions for Dragon and Cygnus. Bergin. Chris. NASASpaceFlight.com . 19 April 2015. 30 January 2017. https://web.archive.org/web/20170130164344/https://www.nasaspaceflight.com/2015/03/nasa-crs-missions-dragon-cygnus/. live.
- Web site: Dragon 2 modifications to Carry Cargo for CRS-2 missions. Ralph . Eric. SpaceX/Teslarati. 29 September 2020. 1 October 2020. https://web.archive.org/web/20201001023048/https://www.teslarati.com/spacex-no-crew-dragon-spaceship-reuse-nasa-astronaut-launches/cargo-dragon-2-required-modifications/. live.
- Audit of Commercial Resupply Services to the International Space Center. . NASA. Office of Inspector General. IG-18-016. 24, 28–30. 26 April 2018. 29 September 2020. 5 April 2021. https://web.archive.org/web/20210405210438/https://oig.nasa.gov/docs/IG-18-016.pdf. live.
- Web site: SpaceX to begin flights under new cargo resupply contract next year. Clark. Stephen. Spaceflight Now. 2 August 2019. 29 September 2020. 3 August 2019. https://web.archive.org/web/20190803000441/https://spaceflightnow.com/2019/08/02/spacex-to-begin-flights-under-new-cargo-resupply-contract-next-year/. live.
- News: 1 February 2022 . NASA plans to take International Space Station out of orbit in January 2031 by crashing it into 'spacecraft cemetery' . live . https://web.archive.org/web/20231010112515/https://news.sky.com/story/nasa-plans-to-take-international-space-station-out-of-orbit-in-january-2031-by-crashing-it-into-spacecraft-cemetery-12530194 . 10 October 2023 . 1 February 2022 . Sky News.
- Web site: Foust . Jeff . 9 May 2023 . NASA proposes 'hybrid' contract approach for space station deorbit vehicle . 10 May 2023 . SpaceNews .
- Web site: NASA Selects International Space Station US Deorbit Vehicle - NASA . 2024-06-26 . en-US.
- Web site: Foust . Jeff . 2024-05-01 . Nelson lobbies Congress to fund ISS deorbit vehicle in supplemental spending bill . 2024-05-03 . SpaceNews . en-US.
- Web site: NASA, SpaceX looking to extend lifespan of Crew Dragon spacecraft to 15 flights. Brett. Tingley. March 6, 2024. August 21, 2024. space.com.
- Web site: 2020-11-16 . Crew-1 Dragon Arrives At the International Space Station . 2024-08-22 . SpaceNews . en-US.
- News: Roulette . Joey . 2021-11-11 . SpaceX’s toilet is working fine, thanks for asking. . 2024-08-22 . The New York Times . en-US . 0362-4331.
- News: Howell . Elizabeth . 30 March 2021 . SpaceX's Dragon spaceship is getting the ultimate window for private Inspiration4 spaceflight . live . https://web.archive.org/web/20210709184746/https://www.space.com/spacex-crew-dragon-cupola-window-inspiration4 . 9 July 2021 . 8 July 2021 . Space.com.
- News: Sheetz . Michael . July 11, 2024 . Overview: Approaching Dawn . August 18, 2024 . CNBC's Investing in Space Newsletter.
- News: Bergin. Chris. Dragon V2 will initially rely on parachute landings. 29 August 2014 . NASASpaceFlight.com. 28 August 2014. 28 August 2014. https://web.archive.org/web/20140828214641/http://www.nasaspaceflight.com/2014/08/dragon-v2-rely-parachutes-landing/ . live.
- Web site: NASA Chooses American Companies to Transport U.S. Astronauts to International Space Station. NASA. 16 September 2014. 20 March 2019. https://web.archive.org/web/20190320051537/https://www.nasa.gov/press/2014/september/nasa-chooses-american-companies-to-transport-us-astronauts-to-international/. live.
- Web site: Why NASA Rejected Sierra Nevada's Commercial Crew Vehicle. Aviation Week. https://web.archive.org/web/20141027174620/http://aviationweek.com/space/why-nasa-rejected-sierra-nevadas-commercial-crew-vehicle. dead. 27 October 2014. 3 March 2019.
- Web site: Scott . Heather . NASA Updates Commercial Crew Planning Manifest . . 12 October 2023 . 12 October 2023.
- News: NASA, SpaceX Agree on Plans for Crew Launch Day Operations. Garcia. Mark. 17 August 2018. NASA. 25 November 2018. 3 October 2018. https://web.archive.org/web/20181003104824/https://www.nasa.gov/feature/nasa-spacex-agree-on-plans-for-crew-launch-day-operations/. live.
- Web site: NASA's Commercial Crew Program Target Test Flight Dates. 21 November 2018. NASA. 22 November 2018. 25 November 2018. https://web.archive.org/web/20181125212110/https://blogs.nasa.gov/commercialcrew/2018/11/21/nasas-commercial-crew-program-target-test-flight-dates-5/. dead.
- Web site: NASA, Partners Update Commercial Crew Launch Dates. 6 February 2019. NASA Commercial Crew Program Blog. 8 February 2019. 2 March 2019. https://web.archive.org/web/20190302204511/https://blogs.nasa.gov/commercialcrew/2019/02/06/. dead.
- Web site: Elon Musk Shares Simulation Video, Schedule Of Crew Dragon's First Crewed Flight. 17 April 2020. 20 April 2020. https://web.archive.org/web/20200420193137/https://spaceflightnow.com/2020/04/17/soyuz-with-crew-of-three-lands-safely-in-kazakhstan/. live. Chan. Athena. International Business Times. 17 April 2020.
- Web site: So, You Want to Be a Space Tourist?. 11 June 2019. Observer. 12 June 2019 . 11 June 2019. https://web.archive.org/web/20190611204116/https://observer.com/2019/06/international-space-station-commercial-business-tourism/. live.
- Web site: Foust . Jeff . February 18, 2020 . Space Adventures to fly tourists on Crew Dragon mission . SpaceNews.
- Web site: Shelley. Tom. 2020-03-05. Private Mission Available on the SpaceX Crew Dragon . 2021-04-23. Space Adventures.
- Web site: Clark . Anastasia . U.S. firm sees 'exciting' moment as space tourism booms . . 18 October 2021 . 18 October 2021.
- Web site: S.S. John Glenn freighter departs space station after successful cargo delivery. Spaceflight Now. Justin. Ray. 13 December 2016. 4 June 2017.
- Web site: NASA sets tentative date for launching astronauts in SpaceX ship. 3 July 2019. https://web.archive.org/web/20190703031223/https://futurism.com/the-byte/nasa-tentative-spacex-launch-date. live. futurism.com. 3 July 2019.
- Web site: SpaceX crew capsule completes dramatic abort test. 6 May 2015. 10 June 2015. https://web.archive.org/web/20150610060727/http://spaceflightnow.com/2015/05/06/spacex-crew-capsule-completes-dramatic-abort-test/. live. Clark. Stephen. Spaceflight Now. 14 May 2015.
- News: Bergin. Chris. SpaceX preparing for a busy season of missions and test milestones. NASASpaceFlight.com. 3 April 2015 . 7 April 2015. https://web.archive.org/web/20150407001148/http://www.nasaspaceflight.com/2015/04/spacex-preparing-busy-season-missions-test-milestones/. live. 4 April 2015.
- Web site: SpaceX Crew Dragon pad abort: Test flight demos launch escape system. collectspace.com. 14 May 2015. 6 May 2015. 18 May 2015. https://web.archive.org/web/20150518075950/http://www.collectspace.com/news/news-050615a-spacex-dragon-pad-abort.html. live.
- Web site: Bergin. Chris. Dragon 2 conducts Pad Abort leap in key SpaceX test. NASASpaceFlight. 6 May 2015. 6 May 2015. 22 May 2015. https://web.archive.org/web/20150522125801/http://www.nasaspaceflight.com/2015/05/dragon-2-pad-abort-leap-key-spacex-test/. live.
- Web site: Clark. Stephen . SpaceX crew capsule completes dramatic abort test. Spaceflight Now. 2020-06-23. 30 July 2020. https://web.archive.org/web/20200730070948/https://spaceflightnow.com/2015/05/06/spacex-crew-capsule-completes-dramatic-abort-test/. live.
- Dragon 2 Propulsive Hover Test. SpaceX. 21 January 2016. 21 January 2016.
- News: Bergin. Chris. SpaceX DragonFly arrives at McGregor for testing. 30 October 2015. NASASpaceFlight.com. 21 October 2015. 2 November 2015. https://web.archive.org/web/20151102064252/http://www.nasaspaceflight.com/2015/10/spacex-dragonfly-arrives-mcgregor-testing/. live.
- Web site: NASA assigns 4 astronauts to commercial Boeing, SpaceX test flights. collectspace.com. 3 March 2019. 15 March 2019. https://web.archive.org/web/20190315165800/http://www.collectspace.com/news/news-070915a-commercial-crew-astronauts.html. live.
- News: Commercial crew demo missions manifested for Dragon 2 and CST-100 . 17 June 2015. https://web.archive.org/web/20150617084812/http://www.nasaspaceflight.com/2015/03/commercial-crew-demo-missions-dragon-cst-100/. Bergin . Chris. NASASpaceFlight.com. live. 5 March 2015. 7 March 2015.
- News: Kramer. Miriam. Private Space Taxis on Track to Fly in 2017. 27 January 2015. Scientific American. 27 January 2015. 28 January 2015 . https://web.archive.org/web/20150128042337/http://www.scientificamerican.com/article/private-space-taxis-on-track-to-fly-in-2017/. live.
- Web site: NASA Assigns Crews to First Test Flights, Missions on Commercial Spacecraft. NASA. 20 March 2020. https://web.archive.org/web/20200320101243/https://www.nasa.gov/press-release/nasa-assigns-crews-to-first-test-flights-missions-on-commercial-spacecraft. live. 3 August 2018. 4 August 2018.
- News: Nail . Rachael . July 16, 2021 . Commander of first crewed SpaceX launch Doug Hurley retires . July 4, 2023 . Florida Today.
- Web site: NASA, Partners Update Commercial Crew Launch Dates. NASA Commercial Crew Program Blog. 6 February 2019. 6 February 2019 . 2 March 2019. https://web.archive.org/web/20190302204511/https://blogs.nasa.gov/commercialcrew/2019/02/06/. dead.
- Web site: Crew Demo-1 | Launch. YouTube. 8 March 2019. 8 March 2019. https://web.archive.org/web/20190308142733/https://www.youtube.com/watch?v=2ZL0tbOZYhE. live.
- Web site: SpaceX Crew Dragon Hatch Open. NASA. 3 March 2019. 3 March 2019. 4 March 2019 . https://web.archive.org/web/20190304111704/https://blogs.nasa.gov/spacestation/2019/03/03/spacex-crew-dragon-hatch-open/. live.
- Web site: Crew Demo 1 Mission Overview. SpaceX. 2 March 2019. https://web.archive.org/web/20190302235308/https://www.spacex.com/sites/spacex/files/crew_demo-1_press_kit.pdf. live. March 2019. 3 March 2019.
- SpaceX #CrewDragon Demonstration Flight Return to Earth. 8 March 2019 . YouTube.
- Web site: SpaceX's Crew Dragon spacecraft suffers an anomaly during static fire testing at Cape Canaveral. NASASpaceFlight.com. Baylor, Michael. 20 April 2019. 21 April 2019. 1 April 2020. https://web.archive.org/web/20200401121754/https://www.nasaspaceflight.com/2019/04/spacexs-crew-dragon-spacecraft-anomaly-static-fire-testing/. live.
- Bridenstine. Jim. JimBridenstine. 1119754804258062337. 20 April 2019. NASA has been notified about the results of the @SpaceX Static Fire Test and the anomaly that occurred during the final test. We will work closely to ensure we safely move forward with our Commercial Crew Program.. 21 April 2019.
- News: SpaceX confirmed that its Crew Dragon spaceship for NASA was 'destroyed' by a recent test. Here's what we learned about the explosive failure.. Mosher . Dave. Business Insider. 6 May 2019. 7 May 2019. https://web.archive.org/web/20190507103434/https://www.businessinsider.com/spacex-crew-dragon-spaceship-test-explosion-2019-5. live.
- Web site: Update: In-Flight Abort Static Fire Test Anomaly Investigation. https://web.archive.org/web/20200413005920/https://www.spacex.com/news/2019/07/15/update-flight-abort-static-fire-anomaly-investigation. 13 April 2020 . Shanklin. Emily. 15 July 2019. SpaceX. 18 July 2019.
- Web site: Explosion that destroyed SpaceX Crew Dragon is blamed on leaking valve. 16 July 2019. https://web.archive.org/web/20190716024855/https://www.cbsnews.com/news/spacex-explosion-destroyed-crew-dragon-spacecraft-blamed-on-leaking-valve/ . live. Harwood . William. CBS News. 15 July 2020. 16 July 2019.
- Web site: Ralph . Eric . 14 November 2019 . SpaceX fires up redesigned Crew Dragon as NASA reveals SuperDraco thruster 'flaps' . live . https://web.archive.org/web/20191116151800/https://www.teslarati.com/spacex-fires-redesigned-crew-dragon-superdraco-flaps/ . 16 November 2019 . 16 November 2019 . Teslarati.
- Web site: SpaceX fires up Crew Dragon thrusters in key test after April explosion. Spaceflight Now. Stephen. Clark. 13 November 2019. 12 August 2020. 6 June 2020. https://web.archive.org/web/20200606132003/https://spaceflightnow.com/2019/11/13/spacex-fires-up-crew-dragon-thrusters-in-key-test-after-april-explosion/ . live.
- Web site: Johnson . Eric M. . 18 June 2019 . NASA boss says no doubt SpaceX explosion delays flight program . live . https://web.archive.org/web/20190618101321/https://www.journalpioneer.com/news/world/nasa-boss-says-no-doubt-spacex-explosion-delays-flight-program-323465/ . 18 June 2019 . 18 June 2019 . Journal Pioneer.
- Web site: NASA, SpaceX Complete Final Major Flight Test of Crew Spacecraft. Karen. Northon. 19 January 2020. NASA. 3 June 2020. 23 January 2020. https://web.archive.org/web/20200123115852/https://www.nasa.gov/press-release/nasa-spacex-complete-final-major-flight-test-of-crew-spacecraft. live.
- News: Second SpaceX Crew Flight Ordered by NASA. Spaceflight Insider . Derek. Richardson. 30 July 2016. 9 August 2016. Currently, the first uncrewed test of the spacecraft is expected to launch in May 2017. Sometime after that, SpaceX plans to conduct an in-flight abort to test the SuperDraco thrusters while the rocket is traveling through the area of maximum dynamic pressure – Max Q.. 6 August 2016. https://web.archive.org/web/20160806174828/http://www.spaceflightinsider.com/organizations/space-exploration-technologies/second-spacex-crew-flight-ordered-nasa/. live.
- News: Foust. Jeff. SpaceX seeks to accelerate Falcon 9 production and launch rates this year. SpaceNews. 4 February 2016. Shotwell said the company is planning an in-flight abort test of the Crew Dragon spacecraft before the end of this year, where the vehicle uses its thrusters to separate from a Falcon 9 rocket during ascent. That will be followed in 2017 by two demonstration flights to the International Space Station, the first without a crew and the second with astronauts on board, and then the first operational mission.. 6 February 2016. 9 February 2016 . https://archive.today/20160209152801/http://spacenews.com/spacex-seeks-to-accelerate-falcon-9-production-and-launch-rates-this-year/. live.
- Web site: More Fidelity for SpaceX In-Flight Abort Reduces Risk. Siceloff. Steven. 1 July 2015. NASA. 19 June 2016. In the updated plan, SpaceX would launch its uncrewed flight test (DM-1), refurbish the flight test vehicle, then conduct the in-flight abort test prior to the crew flight test. Using the same vehicle for the in-flight abort test will improve the realism of the ascent abort test and reduce risk.. 16 June 2016. https://web.archive.org/web/20160616202356/http://www.nasa.gov/feature/more-fidelity-for-spacex-in-flight-abort-reduces-risk/. live.
- Web site: Update: In-Flight Abort Static Fire Test Anomaly Investigation. Shanklin. Emily. 15 July 2019 . SpaceX. 26 January 2020. 15 July 2019. https://web.archive.org/web/20190715213628/https://www.spacex.com/news/2019/07/15/update-flight-abort-static-fire-anomaly-investigation. live.
- Web site: SpaceX conducts successful Crew Dragon In-Flight Abort Test. 17 January 2020. NASA Spaceflight. 26 January 2020. 25 May 2020. https://web.archive.org/web/20200525051635/https://www.nasaspaceflight.com/2020/01/spacex-crew-dragon-in-flight-abort-test/. live.
- Web site: Northon. Karen. NASA, SpaceX Complete Final Major Flight Test of Crew Spacecraft. NASA. 26 January 2020. 19 January 2020. 25 January 2020 . https://web.archive.org/web/20200125045217/https://www.nasa.gov/press-release/nasa-spacex-complete-final-major-flight-test-of-crew-spacecraft. live.
- Bridenstine . Jim. JimBridenstine. 1251178705633841167. 17 April 2020. BREAKING: On May 27, @NASA will once again launch American astronauts on American rockets from American soil! With our @SpaceX partners, @Astro_Doug and @AstroBehnken will launch to the @Space_Station on the #CrewDragon spacecraft atop a Falcon 9 rocket. Let's #LaunchAmerica pic.twitter.com/RINb3mfRWI. 17 April 2020.
- SpaceX. 1265739654810091520. 27 May 2020. Standing down from launch today due to unfavorable weather in the flight path. Our next launch opportunity is Saturday, May 30 at 19:22 UTC. 27 May 2020.
- SpaceX. 1266812530833240064. 30 May 2020. Liftoff! . 31 May 2020.
- elonmusk. 1266890648587776003. 30 May 2020. Dragonship Endeavor.
- SpaceX. 1267098143805435904. 31 May 2020. Docking confirmed – Crew Dragon has arrived at the @space_station!. 31 May 2020.
- Web site: SpaceX's historic Demo-2 delivers NASA astronauts to ISS . 2024-04-19 . CNET . en.
- Web site: Bartels . Meghan (last update) . 2020-05-31 . SpaceX's 1st Crew Dragon with astronauts docks at space station in historic rendezvous . 2024-04-19 . Space.com . en.
- "We were surprised a little bit at how smooth things were off the pad ... and our expectation was as we continued with the flight into second stage that things would basically get a lot smoother than the Space Shuttle did, but Dragon was huffing and puffing all the way into orbit, and we were definitely driving and riding a dragon all the way up, and so it was not quite the same ride, the smooth ride as the Space Shuttle was up to MECO. A little bit less g's but a little bit more 'alive' is probably the best way I would describe it". NASA Astronauts Arrive at the International Space Station on SpaceX Spacecraft. 31 May 2020. 31 May 2020. 03:46:02.
- News: BBC News . SpaceX: Nasa crew describe rumbles and jolts of return to Earth . Paul . Rincon . 4 August 2020 . live . https://web.archive.org/web/20200805021702/https://www.bbc.com/news/science-environment-53658837. 5 August 2020.
- Web site: NASA briefly updates status of Crew Dragon anomaly, SpaceX test schedule. 21 August 2019. https://web.archive.org/web/20190821140952/https://www.nasaspaceflight.com/2019/05/nasa-briefly-crew-dragon-anomaly-spacex-schedule/. live . Gebhardt. Chris. NASASpaceFlight.com. 29 May 2019. 29 May 2019.
- Web site: SCR00CHY. List of Dragon Capsules. ElonX.net. 3 June 2020. 21 May 2020. https://web.archive.org/web/20200603193039/https://www.elonx.net/list-of-dragon-capsules/. 3 June 2020. live.
- Web site: Crew Dragon . Gunter's Space Page. 11 June 2019.
- Web site: NASA astronauts launch from U.S. soil for first time in nine years. Spaceflight Now. 30 May 2020. 31 May 2020. 31 May 2020. https://web.archive.org/web/20200531005857/https://spaceflightnow.com/2020/05/27/falcon-9-crew-dragon-demo-2-mission-status-center/. live.
- 1286312153193029633 . jeff_foust . McErlean: NASA's plans call for reusing the Falcon 9 booster from the Crew-1 mission on the Crew-2 mission, and to reuse the Demo-2 capsule for Crew-2 as well. . 23 July 2020.
- Web site: NASA's SpaceX Crew-8 Launches to International Space Station - NASA . 2024-03-15 . en-US.
- Web site: The private Inspiration4 astronauts on SpaceX's Dragon may have an epic view ... from the toilet. Space.com. 14 September 2021. 16 September 2021. 16 September 2021. https://web.archive.org/web/20210916122211/https://www.space.com/inspiration4-spacex-crew-dragon-toilet-dome-window. live.
- SpaceX. 1349528716951474177. 13 January 2021. Splashdown of Dragon confirmed, completing SpaceX's 21st @Space_Station resupply mission and the first return of a cargo resupply spacecraft off the coast of Florida. 11 June 2021. https://web.archive.org/web/20210528082831/https://twitter.com/SpaceX/status/1349528716951474177. 28 May 2021. live.
- Web site: Garcia. Mark. What You Need to Know about NASA's SpaceX Crew-3 Mission. NASA. 25 October 2021. 12 November 2021.
- Web site: Kanayama . Lee . 2022-09-16 . SpaceX and NASA in final preparations for Crew-5 mission . 2022-09-17 . NASASpaceFlight.com . en-US.
- Web site: SpaceX is adding two more Crew Dragons to its fleet. Stephen. Clark. Spaceflight Now. 6 October 2021. 7 October 2021.
- Web site: Foust . Jeff . SpaceX to launch last new cargo Dragon spacecraft . SpaceNews . 18 February 2023 . 19 November 2022 . Walker revealed at the briefing SpaceX plans to build a fifth and likely final Crew Dragon..
- Web site: Rocket Launch Viewing Guide for Cape Canaveral. launchphotography.com. Ben . Cooper. 2 November 2019. 4 November 2019. 9 February 2016. https://web.archive.org/web/20160209063848/http://www.launchphotography.com/Delta_4_Atlas_5_Falcon_9_Launch_Viewing.html. live.
- News: Clark. Stephen. NASA, SpaceX set May 27 as target date for first crew launch. Spaceflight Now. 17 April 2020. 17 April 2020. 21 April 2020. https://web.archive.org/web/20200421094936/https://spaceflightnow.com/2020/04/17/nasa-spacex-set-may-27-as-target-date-for-first-crew-launch/. live.
- Web site: Crew Dragon SpX-DM2. Spacefacts. 31 May 2020. 3 July 2020. https://web.archive.org/web/20200703194414/http://spacefacts.de/mission/english/dragon_spx-dm2.htm. live.
- Web site: Northon. Karen. 2020-10-26. NASA, SpaceX Invite Media to Crew-1 Mission Update, Target New Date. 2020-10-27. NASA. 30 October 2020. https://web.archive.org/web/20201030172549/https://www.nasa.gov/press-release/nasa-spacex-invite-media-to-crew-1-mission-update-target-new-launch-date/. live.
- Web site: NASA, SpaceX Crew-1 Launch Update. 10 October 2020 . live. https://web.archive.org/web/20201010222517/https://blogs.nasa.gov/commercialcrew/2020/10/10/nasa-spacex-crew-1-launch-update/. 10 October 2020. 10 October 2020. NASA.
- Web site: Crew-1 Makes Nighttime Splashdown, Ends Mission. NASA. 2 May 2021. 2 May 2021. 2 May 2021. https://web.archive.org/web/20210502072154/https://blogs.nasa.gov/crew-1/2021/05/02/crew-1-makes-nighttime-splashdown-ends-mission/. live.
- Web site: NASA selects astronauts for Crew Dragon mission. 31 March 2020. 1 April 2020 . Foust . Jeff. spacenews.com. 2 April 2020. https://archive.today/20200402052416/https://spacenews.com/nasa-selects-astronauts-for-crew-dragon-mission/. live.
- Web site: Live coverage: SpaceX crew capsule set to move to new space station docking port. Spaceflight Now. 5 April 2021. 5 April 2021. 5 April 2021. https://web.archive.org/web/20210405055233/https://spaceflightnow.com/2021/04/05/crew-1-dragon-relocation-mission-status-center/. live.
- Web site: NASA, SpaceX Invite Media to Next Commercial Crew Launch. Potter. Sean. NASA. 5 March 2021. 5 March 2021. 10 March 2021. https://web.archive.org/web/20210310233109/http://www.nasa.gov/press-release/nasa-spacex-invite-media-to-next-commercial-crew-launch/. live.
- Web site: Sempsrott. Danielle. NASA, SpaceX Update Crew Launch and Return Dates. NASA. 14 June 2021. 14 June 2021. 14 June 2021. https://web.archive.org/web/20210614203104/https://blogs.nasa.gov/kennedy/2021/06/14/nasa-spacex-update-crew-launch-and-return-dates/. live.
- Web site: Ralph . Eric . SpaceX Dragon returns astronauts to Earth after record-breaking spaceflight . Teslarati . 9 November 2021 . 9 November 2021.
- Web site: Atkinson. Ian. SpaceX launches Inspiration4, first all-private orbital mission. NASASpaceFlight. 15 September 2021. 17 February 2023.
- Web site: Sheetz. Michael. 2021-09-18. SpaceX's private Inspiration4 mission splashes down safely in Atlantic Ocean. 18 September 2021. https://web.archive.org/web/20210918223057/https://www.cnbc.com/2021/09/18/watch-spacex-livestream-inspiration4-splashdown-crew-dragon-returns.html. live. CNBC. 2021-09-18.
- Web site: Second phasing burn complete. https://web.archive.org/web/20210916035116/https://twitter.com/spacex/status/1438336379830915072. live. Twitter. 16 September 2021. 2021-09-16.
- Web site: Sempsrott . Danielle . NASA, SpaceX Adjust Next Space Station Crew Rotation Launch Date . NASA . 30 October 2021 . 30 October 2021.
- Web site: Chelsea . Gohd . SpaceX Crew-3 astronauts have fun testing spacesuits before coming home (photos) . space.com . 28 April 2022 .
- Web site: NASA Launch Schedule . . 28 March 2022 . 29 March 2022.
- Web site: Griffin . Amanda . 22 April 2022 . NASA and SpaceX Adjust Agency's Crew-4 Launch Date . 23 April 2022 . NASA.
- Web site: NASA, SpaceX Adjust Crew-5 Launch Date . 25 August 2022 . 30 August 2022.
- Web site: Cawley . James . NASA, SpaceX Adjust Crew-5 Launch Date . . 25 August 2022 . 25 August 2022.
- Web site: Lavelle . Heidi . Dragon Endurance Undocks from the Space Station . 11 March 2023 . NASA . 11 March 2023 .
- Web site: 2021-10-26. Rogozin says Crew Dragon safe for Russian cosmonauts. 2021-10-29. SpaceNews. en-US.
- Web site: Baylor . Michael . Falcon 9 Block 5 - Axiom Mission 2 (AX-2) . Next Spaceflight . 25 April 2023.
- Web site: 2023-03-23 . Saudi astronauts to research cancer, cloud seeding, microgravity in space . 2023-04-06 . Al Arabiya English . en.
- Web site: Falcon 9 Block 5 - SpaceX Crew-7 . 25 July 2023 . 26 July 2023 . Next Spaceflight.
- Web site: Falcon 9 Block 5 - Axiom Mission 3 (AX-3) . 14 February 2024. Next Spaceflight.
- Web site: Costa . Jason . NASA Updates Commercial Crew Planning Manifest Through 2024 . . 14 April 2023 . 14 April 2023.
- Web site: Polaris Dawn. 2022-02-14. Polaris Program. en-US.
- News: Jared Isaacman, who led the first all-private astronaut mission to orbit, has commissioned 3 more flights from SpaceX. en-US. Washington Post. 2022-02-14. 0190-8286.
- News: Berger . Eric . 2024-08-05 . NASA likely to significantly delay the launch of Crew 9 due to Starliner issues . 2024-08-05 . arstechnica . en-us.
- Web site: Niles-Carnes . Elyna . 2024-08-06 . NASA Adjusts Crew-9 Launch Date for Operational Flexibility – NASA’s SpaceX Crew-9 Mission . 2024-08-06 . . en-US.
- https://arstechnica.com/space/2024/08/spacex-announces-first-human-mission-to-ever-fly-over-the-planets-poles/
- Web site: NASA Shares its SpaceX Crew-10 Assignments for Space Station Mission - NASA . 2024-08-02 . en-US.
- Web site: NASA's SpaceX Crew-9 Mission Overview News Conference. NASA. 26 July 2024. 26 July 2024.
- 1821974345742479748 . NASASpaceOps . Axiom Mission 4 (Ax-4), the fourth private astronaut mission to the @Space_Station, now is targeted to launch no earlier than Spring 2025 from @NASAKennedy in Florida. . 9 August 2024 . 9 August 2024.
- News: VAST Announces the Haven-1 and VAST-1 Missions.. Vast Space. 10 May 2023. 10 May 2023.
- NASA Space Operations . NASASpaceOps . 1715475921820393740 . With Axiom Mission 3 scheduled to liftoff from Florida no earlier than January 2024, @NASA, @Axiom_Space, & @SpaceX teams are now targeting no earlier than October 2024 to launch Axiom Mission 4 to the @Space_Station. . 20 October 2023.
- News: NASA just bought the rest of the space station crew flights from SpaceX. Ars Technica. Berger. Eric. Eric Berger (meteorologist). 3 June 2022. 3 June 2022.
- News: Dragon CRS-21 – CRS-35 . 2024-06-20 . Gunter's Space Page . en.
- Web site: Herridge . Linda . NASA Invites Media to SpaceX's 26th Resupply Launch to Space Station . . 3 November 2022 . 3 November 2022.
- Web site: Foust . Jeff . SpaceX launches cargo Dragon mission to ISS . . 14 July 2022 . 15 July 2022 . After CRS-25, the next commercial cargo mission is NG-18, a Northrop Grumman Cygnus mission tentatively scheduled for mid-October. The SpaceX CRS-26 Dragon mission will follow late in the year, delivering among other cargo a set of solar arrays to be installed on the station by spacewalking astronauts..
- Web site: Clark . Stephen . Launch Schedule . Spaceflight Now . 1 April 2023 . 1 April 2023.
- Web site: Baylor . Michael . Falcon 9 Block 5 – SpX CRS-28 . 25 April 2023 . Next Spaceflight.
- News: Clark . Stephen . SpaceX launches Dragon cargo ship to deliver new solar arrays to space station – Spaceflight Now . 23 December 2022 . Spaceflight Now . 26 November 2022 . en.
- Web site: Wall . Mike . 2023-06-09 . SpaceX Dragon breaks 2 space shuttle orbital records . 2023-06-09 . Space.com . en.
- Web site: Falcon 9 Block 5 CRS SpX-29 . 2023-11-10 . nextspaceflight.com . en.
- Web site: DORA Satellite Technical Description . 20 September 2023 . Arizona State University.
- News: NASA Orders Additional Cargo Flights to Space Station. NASA. 25 March 2022. 25 March 2022.
- Web site: NASA Selects International Space Station US Deorbit Vehicle - NASA . 2024-06-27 . en-US.