"Our Science Olympiad team had a disaster at its regionals. Their two
planes climbed way too quickly and after many collisions with the roof,
scoreboard, basketball backboards, one plane ended up landing on a light fixture and
the other crashed."
Another thing to consider is the history of the rubber. Rubber is a dynamic
material. Its properties vary with use. It will soften and the stretch
will set if it is wound tightly. The first flight will be faster than a later
flight. If the test half motors had a different use history than the contest
motors, that would make a difference.
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Received on Mon Feb 26 2007 - 03:30:18 CET