Special forces

160 Pins
·
2d
Apollo Rocket Engines: SE-6, SE-8 and R-4D
Three vintage bipropellant engines from the space race. Each of them was used for maneuvering in space, and each has a simple solenoid valve assembly, which allows the fuel and oxidizer to spray into the combustion chamber. These particularly noxious hypergolic chemicals have the valuable property that they ignite spontaneously upon contact, in a vacuum, with no spark required. From left to right: • Gemini SE-6, provided attitude and maneuvering control for the Gemini spacecraft. Pitch, ...