Search results
Results from the WOW.Com Content Network
LOX spilled around the base of the thrust section, followed by leakage from the RP-1 fill/drain valve. The propellants then mixed and exploded on the launch stand. Because of the open LOX fill/drain valve, the Atlas's propellant system suffered a loss of fuel flow and pressure that caused the B-2 engine to operate at only 65% thrust.
The prelaunch countdown went relatively smoothly, with one delay caused by the Atlas's LOX fill and drain valve failing to close. At 08:19 GMT on 9 September, Big Joe lifted from LC-14 atop Atlas-10D. All went well until the two-minute mark when telemetry readouts indicated that the booster section had failed to jettison.
Double check valve; Duckbill valve; Fill and drain valve: a valve used in space and missile industry which achieves extremely tight leakage, while providing redundant inhibits against external leakage [1] Flapper valve; Flow divider valve: a valve providing a plurality of output flows from a single fluid source [2]
Maiden flight of Atlas D. LOX fill/drain valve failed to close at liftoff, leading to booster section explosion T+26 seconds. RSO T+36 seconds. 1959-05-19 04:30 Atlas D 7D CCAFS LC-14 ICBM test Suborbital Failure Launcher hold-down arm malfunction damaged missile at liftoff, causing loss of tank pressure during ascent.
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 ...
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
Post-flight investigation examined several possible reasons for the booster engine shutdown, including an accidental closure of the booster fuel staging disconnect valve, an open fuel fill/drain valve, or an accidental BECO signal. These failure modes were quickly ruled out and attention quickly centered on closure of the booster fuel prevalves.
Discover the best free online games at AOL.com - Play board, card, casino, puzzle and many more online games while chatting with others in real-time.