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The resulting conceptual heavy-lift vehicle was called "Atlas Phase 2" or "PH2" in the 2009 Augustine Report. An Atlas V PH2-Heavy (three 5 m stages in parallel; six RD-180s) along with Shuttle-derived , Ares V and Ares V Lite, were considered as a possible heavy lifter concept for use in future space missions in the Augustine Report. [ 29 ]
The Atlas II was the last Atlas rocket to use the "stage-and-a-half" technique, where it ignited all 3 RS-56 engines at liftoff and then jettisoned the 2 RS-56-OBA side engines and their support structure during ascent. The two RS-56-OBA engines were integrated into a single unit called the MA-5A and shared a common gas generator.
Date/Time ()Rocket S/N Launch Site Payload Function Orbit Outcome Remarks 1991-04-18 23:30 Atlas I: AC-70 CCAFS SLC-36B: BS-3H: Comsat: GTO (target) : Failure One Centaur engine failed to start due to a plug of frozen nitrogen.
Atlas is a name for a family of modern inline piston engines for trucks from General Motors, used in the GMT355 and GMT360 platforms. The series debuted in 2002 with the Oldsmobile Bravada, and is also used in the Buick Rainier, the Chevrolet TrailBlazer and Colorado, the GMC Envoy and Canyon, the Hummer H3, Isuzu Ascender and i-370, and the Saab 9-7X.
OSTF-2 (also designated Site G or 576 Golf) [4] hosted seven Atlas F launches between 1962 and 1965. This facility received its own baptism of fire on 4 October 1963 when Missile 45F tipped over at liftoff after one engine failed to start. Damage to the silo was not that serious and it hosted the final Atlas R&D flight two months later.
Most liquid engines use a bipropellant, consisting of two liquid propellants (fuel and oxidizer) which are stored and handled separately before being mixed and burned inside the combustion chamber. Hybrid-propellant rockets use a combination of solid and liquid propellant, typically involving a liquid oxidizer being pumped through a hollow ...
Two of the 2,400-kilonewton (550,000 lbf)-thrust BE-4 engines were to be used on a new launch vehicle booster. [35] [36] [34] A month later, ULA restructured company processes and its workforce to reduce costs. The company said that the successor to Atlas V would blend existing Atlas V and Delta IV with a goal of halving the cost of the Atlas V ...
Atlas I was the last use of the classic Atlas design with three engines, a jettisonable booster section, and two vernier engines. While retaining most of those features, Atlas II replaced the verniers with a hydrazine roll control system. [2] An Atlas I (serial number AC-69) on Pad 36B prior to launch of the CRRES satellite in 1990.
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