RD-0216 should not be confused with RD-216.
| RD-0216 (РД-0216) | |
| Country Of Origin: | USSR |
| First Date: | 1965-04-19 |
| Designer: | OKB-154 |
| Manufacturer: | PO Motorostroitel or Perm |
| Purpose: | ICBM propulsion |
| Associated: | UR-100 |
| Successor: | RD-0235 |
| Status: | Retired |
| Type: | liquid |
| Oxidiser: | N2O4 |
| Fuel: | UDMH |
| Cycle: | Oxidizer Rich Staged combustion |
| Combustion Chamber: | 1 |
| Thrust: | 219kN |
| Chamber Pressure: | 17.4MPa |
| Specific Impulse: | 313isp |
| Used In: | UR-100 Core Stage |
| RD-0235 (РД-0235) | |
| Country Of Origin: | USSR |
| First Date: | 1973-04-09 |
| Designer: | OKB-154 |
| Manufacturer: | Krasny Oktyabr factory |
| Purpose: | ICBM propulsion |
| Associated: | UR-100N, Rokot and Strela |
| Status: | Out of Production |
| Type: | liquid |
| Oxidiser: | N2O4 |
| Fuel: | UDMH |
| Cycle: | Oxidizer Rich Staged combustion |
| Combustion Chamber: | 1 |
| Thrust: | 240kN |
| Chamber Pressure: | 17.5MPa |
| Specific Impulse: | 320isp |
| Used In: | UR-100N Second Stage |
The RD-0216 and RD-0217 are liquid rocket engines, burning N2O4 and UDMH in the oxidizer rich staged combustion cycle. The only difference between the RD-0216 and the RD-0217 is that the latter doesn't have a heat exchanger to heat the pressuring gasses for the tanks. Three RD-0216 and one RD-0217 were used on the first stage of the UR-100 ICBM. The engines were manufactured until 1974 and stayed in operational use until 1991. More than 1100 engines were produced.
For the UR-100N project, while first stage propulsion was based on the more powerful RD-0233 engine. The second stage used a variation of the RD-0217 called the RD-0235 (GRAU Index 15D113). It used a vacuum optimized nozzle extension, and thus had an extra 10 seconds of isp and 21kN of more thrust. It has a fixed nozzle and relies on the RD-0236 vernier engine for thrust vectoring. While the engine has been out of production for a while, the UR-100NU and the Rokot and Strela use it as of 2015.