Bugün öğrendim ki: uzay mekiklerine takılan büyük turuncu yakıt deposu aslında beyazdı, ancak 600 libre tasarruf etmek için boyamayı bıraktılar
"External fuel tank" redirects here. For expendable tanks carried by aircraft, see [Drop tank](/wiki/Drop_tank "Drop tank") . component of the Space Shuttle launch vehicle [](/wiki/File:External_Tank.jpg ) The ET from [STS-115](/wiki/STS-115 "STS-115") after separation from the orbiter. The scorch mark near the front end of the tank is from the SRB separation motors. The **Space Shuttle external tank** ( **ET** ) was the component of the [Space Shuttle](/wiki/Space_Shuttle "Space Shuttle") [launch vehicle](/wiki/Launch_vehicle "Launch vehicle") that contained the [liquid hydrogen](/wiki/Liquid_hydrogen "Liquid hydrogen") [fuel](/wiki/Rocket_propellant "Rocket propellant") and [liquid oxygen](/wiki/Liquid_oxygen "Liquid oxygen") [oxidizer](/wiki /Oxidizer "Oxidizer"). During lift-off and ascent it supplied the fuel and oxidizer under pressure to the three [RS-25](/wiki/RS-25 "RS-25") main engines in the [orbiter](/wiki/Space_Shuttle_orbiter "Space Shuttle orbiter"). The ET was jettisoned just over 10 seconds after main engine cut-off (MECO) and it re- entered the Earth's atmosphere. Unlike the [Solid Rocket Boosters](/wiki/Space_Shuttle_Solid_Rocket_Booster "Space Shuttle Solid Rocket Booster"), external tanks were not re-used. They broke up before impact in the [Indian Ocean](/wiki/Indian_Ocean "Indian Ocean") (or [Pacific Ocean](/wiki/Pacific_Ocean "Pacific Ocean") in the case of direct-insertion launch trajectories), away from [shipping lanes](/wiki/Shipping_lane "Shipping lane") and were not recovered.[2]