RD-215

The RD-215 (Russian: Ракетный Двигатель-215, romanized: Raketnyy Dvigatel-215, lit.

'Rocket Engine 215', GRAU index: 8D513) was a dual nozzle liquid-fuel rocket engine, burning a hypergolic mixture of unsymmetrical dimethylhydrazine (UDMH) fuel with AK-27 oxidizer (a mixture of 73% nitric acid and 27% dinitrogen tetroxide [N2O4] with iodine as a passivant).

It was used in a module of two engines (four nozzles) known as the RD-216 (GRAU index: 8D514).

[2] The RD-215 was developed by OKB-456 for Yangel's Yuzhmash R-14 (8K65) ballistic missile.

[1] The family incorporate many versions:[1][7] These engines were bundled into modules of pairs of engines.