07-07-2011, 02:02 PM
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Launching since 1970.
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Join Date: Mar 2005
Location: Southern California
Posts: 2,188
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Quote:
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Originally Posted by ghrocketman
There is literally nothing a C6-3 can do that the C5-3 does not do better.
Many rockets that are marginal on the C6-3 are fine performers on the C5-3.
Two examples are the full-stack Estes #1284 Space Shuttle and the Estes/Semroc Mars Lander.
It was a stupid decision by Estes to ever discontinue the C5-3 and keep the C6-3 in the line.
Estes had one bad batch of C5-3 motors that went "explodo" on every launch and instead of FIXING THE PROBLEM, they just discontinued the motor.
They got it backwards; the one that survived should have been the one discontinued.
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That is not correct. The bad batch was in year "X" and they continued to make the C5-3 motors for many years afterwards. They simply corrected the problem that led to the catastrophic failures in year "X".
The decision to discontinue them was related to the difficulty in manufacturing them with such a deep centerbore. In business "difficulty" = "expense". |