rjnoe@uniq.UUCP (Roger J. Noe) (03/20/88)
In article <3935@whuts.UUCP>, sw@whuts.UUCP (WARMINK) writes: > . . . (same for the Shuttle missions, in fact, you can't even see the > exhaust from the liquid fuel engines, the massive cloud is produced by the > solid fuel boosters). . . . Except at the moment of liftoff, when most of the "cloud" is steam produced when all the engines (first the SSME's, the three engines attached to the orbiter vehicle, then also the SRB's, the large rockets on either side of the stack) ignite. They quickly boil the deluge of water under the launch platform (the sound suppression system, which protects the launch structure from dangerous vibrations produced by the shuttle) and so most of what you first see is just steam. When the solid rockets kick in, you see some sort of beige-colored cloud, which is the solid rocket booster exhaust, colored that way mainly by Aluminum, I think. Once away from the pad, the main engines produce little more than a blue flame and very little visible exhaust compared to the solids. -- "Wer meines Speeres Spitze furchtet, durchschreite das Feuer nie!" Roger Noe ihnp4!att-ih!uniq!rjnoe Fox Valley Software ihnp4!nwuxf!rjnoe Uniq Digital Technologies +1 312 510 2105 Batavia, Illinois 60510 41:50:56 N. 88:18:35 W.