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RD-270 (Russian: Ракетный Двигатель-270, romanized: Raketnyy Dvigatel-270, lit. 'Rocket Engine 270', GRAU index : 8D420 ) was a single-chamber liquid-fuel rocket engine designed by Energomash ( USSR ) in 1960–1970.
The Russian RD-180 engine also employs a staged-combustion rocket engine cycle. Lockheed Martin began purchasing the RD-180 in circa 2000 for the Atlas III and later, the V , rockets. The purchase contract was subsequently taken over by United Launch Alliance (ULA--the Boeing/Lockheed-Martin joint venture) after 2006, and ULA continues to fly ...
Engine Origin Designer Vehicle Status Use Propellant Power cycle Specific impulse (s) [a] Thrust (N) [a] Chamber pressure (bar) Mass (kg) Thrust: weight ratio [b] Oxidiser: fuel ratio
The full flow staged combustion cycle RD-270 was in testing before program cancellation, achieving a higher specific impulse than the gas-generator cycle Rocketdyne F-1 despite the use of UDMH/N 2 O 4 propellants with lower potential impulse. The F-1 engine was five years into its development at the time and still experiencing combustion ...
The RD-180 used on the Atlas V replaced the three engines used on early Atlas rockets with a single engine and achieved significant payload and performance gains. This engine had also been chosen to be the main propulsion system for the first stage of the now cancelled Russian Rus-M rocket.
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The roots of the RD-180 rocket engine extend to the Soviet Energia launch vehicle. The RD-170, a four-chamber engine, was developed for use in the strap-on boosters for this vehicle, which ultimately launched the Buran orbiter. This engine was scaled down to a two-chamber version by combining the RD-170's combustion devices with half-size ...
The road was closed in both directions. Parts of far northwestern Pennsylvania and southwestern New York could pick up nearly 20 additional inches of snow through Tuesday. The most intense bouts ...