Rocket Engine, Liquid Fuel, Auxiliary Propulsion System (APS), Thruster, Saturn

Partly cylindrical, with gradual tapering in front to smaller diameter and gradual tapering at end towards a flared exhaust nozzle. With ash-tray shaped silver ring in center, lips of tray extending outwards and up and of a slightly larger diameter than middle of engine. Square-shaped electronic package, metallic, with discs attached. mounted on top of engine, and two disc-shaped valves on stems, attached at 45 degree angles on each side of motor in V-shaped pattern. Wiring harness, with white, plastic insulated wires leading out of discs and attached to ends of valves. Overall, brown combustion chamber and nozzle. Shiny silver colored metallic valves, and gray and silver electronic package.