05-04-2009, 10:13 PM
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Rocket buildin' machine
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Join Date: Jan 2007
Location: Cincinnati OH
Posts: 543
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Quote:
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Originally Posted by Carl@Semroc
Those are the results from the second prototype A1.5-0 10mm engine! A little too hot for an A, but that was improved with third which was 2.50N 1.51N and 1.66s. There still is .6" left over in the tube for delay and EC. That will probably limit a full A to about 6 seconds max.
The thin wall cases do hold up. I was afraid that since they are about .050", they would cato or burn-through. So far, all the tests are positive.
An old Estes A8-3 on the stand was 2.2N-s with a .52s burn.
There is still a lot of work to do!
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A 6-second A? I'll fly a bunch, but am not sure I've got the attention span to track anything that flies on one of your C's when you release them. You'll certainly never get these into Wal-Mart, so that Estes acquisition might not be such a hot idea. |