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Réf : S13370
Thème :
Navettes Spatiales (1045 images)
Titre : A hole
Description : (La description de cette image n'existe qu'en anglais)
(05/12/1999) --- A hole, created by recent hail storms, is identified as number two on the surface of the external tank (ET) mated to Space Shuttle Discovery at Launch Pad 39B. Workers are investigating the damage and potential problems for launch posed by ice forming in the holes, which may number as many as 150 over the entire tank. The average size of the holes is one-half inch in diameter and one-tenth inch deep. The external tank contains the liquid hydrogen fuel and liquid oxygen oxidizer and supplies them under pressure to the three space shuttle main engines in the orbiter during liftoff and ascent. The ET thermal protection system consists of sprayed-on foam insulation. The Shuttle Discovery is targeted for launch of mission STS-96 on May 20 at 9:32 a.m
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