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Old January 11th 07, 08:45 PM posted to rec.aviation.piloting,sci.space.history,sci.space.shuttle
Pat Flannery
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Posts: 72
Default Why does the shuttle throttle on ascent?



John wrote:

During the few test shots of Trident missles that I have seen, I always
thought that the angle at which the vehicle flew was remarkable; like
nothing I had ever seen, save for the occassional errant Estes rocket.
The angle seemed close to 45 degrees, although I had no way of really
knowing, almost immediately after emerging from the water and ignition.


Here's a photo of one doing that right after launch:
http://encyclopedia.quickseek.com/im...sile_image.jpg
One thing Trident has is a extensible nose aerospike that sets up a
shockwave ahead of it for drag reduction during ascent.
I wonder if that influenced the ascent trajectory?

Pat