[sci.space.shuttle] SRB Separation?

ewiles@netxcom.UUCP (Edwin Wiles) (10/03/88)

A friend and myself were discussing the Shuttle launch earlier, and she
suggested something intrigueing(sp?):

	The SRB separation must occur when the thrust from the SRBs
	exactly balances their own weight.  If they separate before
	this point, then they would flash ahead of the shuttle and
	possibly damage it.  If they separated after that point, they
	would pose a structural stress in the form of 'dead weight'.

Well?  Is this so?  What's the real answer?  (Eugene?)

					Thanks!
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lukas@ihlpf.ATT.COM (00704a-Lukas) (10/05/88)

In article <983@netxcom.UUCP> ewiles@netxcom.UUCP (Edwin Wiles) writes:
>	The SRB separation must occur when the thrust from the SRBs
>	exactly balances their own weight.  If they separate before

Not quite right, I think. You would want to do it when the acceleration
of each SRB alone matched that of the orbiter alone. Sounds logical,
which of course does not make it true :^).
-- 

	John Lukas
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	312-510-6290