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Transposition, docking, and extraction (often abbreviated to transposition and docking) was a maneuver performed during Apollo lunar landing missions from 1969 to 1972, to withdraw the Apollo Lunar Module (LM) from its adapter housing which secured it to the Saturn V launch vehicle upper stage and protected it from the aerodynamic stresses of launch.
The cable was connected to a cylindrical weight inside a tube. The weight rested on a lever controlled by a pneumatic solenoid valve. When the valve was actuated from the Launch Control Center (LCC), the pneumatic pressure of 600 psi (4,100 kPa) GN2 (nitrogen gas) rotated the lever down allowing the weight to drop down the tube.
The reduction in parts costs is aided by using selective laser melting in the production of some metallic parts. [ 13 ] [ 18 ] The resulting F-1B engine is intended to produce 1,800,000 lbf (8.0 MN) of thrust at sea level, a 15% increase over the approximate 1,550,000 lbf (6.9 MN) of thrust that the mature Apollo 15 F-1 engines produced.
There was no instrument unit for Saturn I Block I boosters (SA-1 to SA-4). Guidance and control equipment was carried in canisters on top of the S-I first stage, and included the ST-90 stabilized platform, made by Ford Instrument Company and used in the Jupiter missile.
In 1973, the year after the Apollo lunar program ended, three Apollo CSM/Saturn IBs ferried crews to the Skylab space station. In 1975, one last Apollo/Saturn IB launched the Apollo portion of the joint US-USSR Apollo–Soyuz Test Project (ASTP). A backup Apollo CSM/Saturn IB was assembled and made ready for a Skylab rescue mission, but never ...
Parts of the country also remains ravaged by war as Turkey-backed opposition fighters battle U.S.-allied Kurdish forces in the north, and the Islamic State group and its extremist ideology remains ...
Lionel Messi and Inter Miami will begin a busy 2025 with matches in Las Vegas, Tampa and Kansas City, the MLS club has announced.. Messi’s first game in the new year will be at Allegiant Stadium ...
On the Apollo 6 uncrewed Block I flight, the SM was painted white to match the command module's appearance. On Apollo 1, Apollo 4, and all the Block II spacecraft, the SM walls were left unpainted except for the EPS and ECS radiators, which were white. The EPS and ECS radiators were redesigned for Block II.