space_2003_status_rd-180.pdf2页

Contact: Patrick Louden Tel: (561) 796-6793 Web Site: www.pw.utc.com Pratt & Whitney Space Propulsion – RD-180 Packing nearly one million pounds of thrust in a total propulsion system, the RD-180 delivers a 10 percent performance increase over current operational U.S. booster engines. This reusable kerosene (hydrocarbon) fueled engine has been flight proven on the Lockheed Martin Atlas III and V. The RD-180 is a two-chamber derivative of the four-chamber RD-170 that was used on Russian vehicles and human-rated in that country. It provides environmentally clean operation while featuring an integrated propulsion package with hydraulics for control valve actuation and thrust vector gimbaling; pneumatics for valve actuation and system purging; and a thrust frame to distribute loads. The RD-180 booster engine is offered by RD AMROSS, a partnership between the world’s two premier propulsion companies – Pratt & Whitney of the United States and NPO Energomash of Russia. Description Staged-combustion cycle engine Liquid oxygen/kerosene propellants 2 thrust chambers (gimbal +/-8 degrees) 1 oxygen-rich preburner High-pressure turbopump assembly - 2-stage fuel pump - single-stage oxygen pump - single turbine Hypergolic ignition Self-contained hydraulic system powered with kerosene from fuel pump Minimal interfaces with launch pad and vehicle 70% RD-170 parts Characteristics (100% power) Nominal thrust: (sea level) 860,200 lb (vacuum) 933,400 lb Specific impulse (sea level): 311.3 sec


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