12 Facts About External tank

1.

Space Shuttle external tank was the component of the Space Shuttle launch vehicle that contained the liquid hydrogen fuel and liquid oxygen oxidizer.

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2.

The External tank was connected to each SRB at one forward attachment point and one aft bracket, and it was connected to the orbiter at one forward attachment bipod and two aft bipods.

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3.

Also, significant portions of the External tank were milled differently so as to reduce thickness, and the weight of the ET's aft solid rocket booster attachments was reduced by using a stronger, yet lighter and less expensive titanium alloy.

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4.

The External tank was manufactured at the Michoud Assembly Facility, New Orleans, and was transported to Kennedy Space Center by barge.

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5.

LOX External tank is located at the top of the ET and has an ogive shape to reduce aerodynamic drag and aerothermodynamic heating.

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6.

LOX External tank includes an internal slosh baffle and a vortex baffle to dampen fluid slosh.

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7.

The External tank is constructed of four cylindrical barrel sections, a forward dome, and an aft dome.

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8.

LH2 External tank has a vortex baffle to reduce swirl resulting from slosh and to prevent entrapment of gases in the delivered LH2.

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9.

In 2005, the problem of foam shed had not been fully cured; on STS-114, additional cameras mounted on the External tank recorded a piece of foam separated from one of its Protuberance Air Load ramps, which are designed to prevent unsteady air flow underneath the External tank's cable trays and pressurization lines during ascent.

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10.

On early flights, the liquid oxygen External tank contained a separate, pyrotechnically operated, propulsive tumble vent valve at its forward end.

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11.

The liquid hydrogen External tank umbilical has two valves for liquid and one for gas.

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12.

In 1990, it was suggested that the external tank be used as a lunar habitat or as an orbital station.

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