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[4] [5] Later in 2014, the US Congress passed a law requiring the US Air Force to "develop a new propulsion system by 2019 to replace the RD-180 engine" that powers Atlas V used by United Launch Alliance (ULA), because the engine is Russian-made, along with the Russian conflict with Crimea. [6] Dynetics is a key partner in development of the ...
This led to a proposal to combine the 5-meter-diameter Delta IV tankage production processes with dual RD-180 engines, resulting in the Atlas Phase 2. An Atlas V PH2-Heavy consisting of three 5-meter stages in parallel with six RD-180s was considered in the Augustine Report as a possible heavy lifter for use in future space missions, as well as ...
Starliner was placed atop the Atlas V launch vehicle on April 16, 2024, but the mission's launch was repeatedly postponed by technical problems. An oxygen valve problem on United Launch Alliance's (ULA) Atlas V [b] rocket scrubbed the first launch attempt on 7 May. A second launch attempt on 1 June was scrubbed when a ground computer failed.
If a valve problem with Boeing's Starliner crew capsule isn't quickly fixed, launch could slip to late this year. Atlas 5 hauled off launch pad for Starliner troubleshooting Skip to main content
The Atlas V can fly in multiple configurations, but only one affects the way Centaur integrates with the booster and fairing: the 5.4 m (18 ft) diameter Atlas V payload fairing attaches to the booster and encapsulates the upper stage and payload, routing fairing-induced aerodynamic loads into the booster. If the 4 m (13 ft) diameter payload ...
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
Dynetics and Aerojet Rocketdyne (AJR) also offered their AR1 hydrocarbon-fueled rocket engine as replacement of the RD-180. [21] [22] ULA CEO Tory Bruno said in early 2015 that both the AR-1 option and the US manufacture of the RD-180 by ULA under license were backup options to the primary option ULA was pursuing with the Blue Origin BE-4 ...
An Atlas V mission (SBIRS-5) marked the first use of the RL10C-1-1 version. The mission was successful but observed unexpected vibration, and further use of the RL10C-1-1 model is on hold until the problem is better understood. [27] The engine was used again successfully on SBIRS-6.