| TQ-11 | |
| Status: | Active |
| Type: | liquid |
| Mixture Ratio: | 2.92 |
| Nozzle Ratio: | 25.5 |
| Thrust(Vac): | 80kN |
| Chamber Pressure: | 10.1MPa |
| Specific Impulse Vacuum: | 337s |
| Dimensions: | 1.1m |
| Diameter: | 0.28m |
| Notes: | [1] |
The TQ-11 (lit. Sky Lark 11) is a gas-generator cycle rocket engine burning liquid methane and liquid oxygen developed by LandSpace. It is used as the second stage vernier engine for LandSpace's ZQ-2 rocket.[2] [3] [4] The engine produces 80kN of thrust in a vacuum.
LandSpace completed the first engine hot firing test for TQ-11 on November 3, 2019, and the engine passed a 1500 second test in 2020. On December 14, 2022, Zhuque-2 completed its maiden flight. The TQ-11 engines used in the rocket's second stage failed, resulting in mission failure. LandSpace planned to upgrade the second stage with one TQ-15A engine, eliminating the need for a vernier engine. The failure of TQ-11 could force LandSpace to update the second stage quicker than anticipated.[5] In July 2023, LandSpace successfully launched its second ZQ-2 rocket, continuing to utilize TQ-11 engines for the second stage. Future flights are planned to employ the TQ-15A engines.[6]