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The second stage of Delta II was the Delta-K, powered by a restartable (up to six restarts) Aerojet AJ10-118K engine burning hypergolic Aerozine-50 and N 2 O 4. These propellants are highly toxic and corrosive, and once loaded the launch had to occur within approximately 37 days or the stage would have to be refurbished or replaced. [ 29 ]
On 17 January 1997, a Delta II (Delta 241) exploded due to a catastrophic failure in a GEM 40. The failure triggered the launch vehicle's self-destruct function 13 seconds after ignition. An Air Force investigation determined that the motor's casing had been damaged prior to launch, causing the case to split open soon after ignition.
Delta II A Delta II launch vehicle launches from Cape Canaveral carrying the Dawn spacecraft. Function Launch vehicle Manufacturer United Launch Alliance Country of origin United States Cost per launch US$51 million in 1987 (7920-10 model) US$137 million in 2018 before retirement Size Height 38.9 m (128 ft) Diameter 2.44 m (8 ft 0 in) Mass 152,000–286,000 kg (335,000–631,000 lb) Stages 2 ...
The Delta 1000 series was nicknamed the Straight-Eight and combined an Extended Long Tank first stage with an 8 ft-diameter (2.4 m) payload fairing, up to nine Castor 2 SRBs, and the new McDonnell Douglas Delta P second stage using the TRW TR-201 engine. Payload capacity increased to 1,835 kg (4,045 lb) to LEO or 635 kg (1,400 lb) to GTO.
The two small spacecraft GRAIL A (Ebb) and GRAIL B (Flow) [6] [7] were launched on 10 September 2011 aboard a single launch vehicle: the most-powerful configuration of a Delta II, the 7920H-10. [ 1 ] [ 8 ] [ 9 ] GRAIL A separated from the rocket about nine minutes after launch, GRAIL B followed about eight minutes later.
The Delta Cryogenic Second Stage (DCSS) is a family of cryogenic-fuelled rocket stages used on the Delta III, Delta IV, and on the Space Launch System Block 1 launch vehicles. The DCSS employs a unique two-tank architecture where the cylindrical liquid hydrogen (LH 2 ) tank carries payload launch loads and forms the upper section.
Mission Delta 2 (MD2) is the United States Space Force's space domain awareness delta, headquartered at Peterson Space Force Base, Colorado. Mission Delta 2 tracks and monitors all human made objects from low Earth orbit to geosynchronous orbit and further out to deep space .
A flaw in the brazing of an RL10B-2 combustion chamber was identified as the cause of failure for the 4 May 1999 Delta III launch carrying the Orion-3 communications satellite. [ 14 ] The DIRECT version 3.0 proposal to replace Ares I and Ares V with a family of rockets sharing a common core stage recommended the RL10 for the second stage of the ...
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