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The resulting gravity fed system, used through the remainder of the program, began release from a 300,000-US-gallon (1.1-million-litre) water tower at the launch site 6.6 seconds before main engine start through 7 feet (2.1 m) diameter pipes connected to the mobile launch platform.
The RS-25 engine consists of pumps, valves, and other components working in concert to produce thrust. Fuel (liquid hydrogen) and oxidizer (liquid oxygen) from the Space Shuttle's external tank entered the orbiter at the umbilical disconnect valves and from there flowed through the orbiter's main propulsion system (MPS) feed lines; whereas in the Space Launch System (SLS), fuel and oxidizer ...
The satellite designs also required that the Space Shuttle have a 4.6 by 18 m (15 by 60 ft) payload bay. NASA evaluated the F-1 and J-2 engines from the Saturn rockets, and determined that they were insufficient for the requirements of the Space Shuttle; in July 1971, it issued a contract to Rocketdyne to begin development on the RS-25 engine.
STS-93 in 1999 marked the 95th launch of the Space Shuttle, the 26th launch of Columbia, and the 21st night launch of a Space Shuttle. Eileen Collins became the first female shuttle Commander on this flight.
Uses LH 2 tank originally intended for CS-1. CS-4 E2044, E2050, E2051, E2052 In manufacturing. [18] NET September 2028 [70] CS-5 Procurement of long-lead items. [18] NET September 2029 [71] First core stage to be procured by Deep Space Transport instead of NASA. [72] First core stage to use Production Restart RS-25 engines. [73] CS-6
The redline limit to initiate a shutdown is at 867 K. This limit increases to 980 K at T−1.3 s (5.3 s after Main Engine Start). Main Engine #3 (SN 2032) has been used on two previous flights with 2,412 seconds (40 min) of hot-fire time and a total of eight starts. This was the first flight for the HPOT on Main Engine (SSME) #3. [4]
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STS-51-F (also known as Spacelab 2) was the 19th flight of NASA's Space Shuttle program and the eighth flight of Space Shuttle Challenger.It launched from Kennedy Space Center, Florida, on July 29, 1985, and landed eight days later on August 6, 1985.