05-15-2013, 11:07 AM
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Junior ??? Rocketeer
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Join Date: Mar 2005
Location: Knightdale, NC
Posts: 1,470
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The Mabel I engines used Jetex Wick in the upper stage engine to aid ignition. This was dropped with the Mabel II (.5" ID) engines. I remember the "crumbly" Jetex propellant falling away, leaving just the wire hanging in some of the upper stage attempts.
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Carl McLawhorn
NAR#4717 L2
semroc.com
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