Justy
Well-Known Member
- Joined
- Jul 11, 2003
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At the last club launch, one of the members gave me an Aerotech D21-10, with the condition that it be launched at a club launch where he can watch.
So I'm building a fairly minimalist, disposable, minimum diameter rocket to fly it in. The risk is large... the chance of recovery is low, because it will be flying quite high, and I'm told the D21 had a bit of a CATO problem.
So here's the question. I can build this rocket as light as possible, and it should break mach somewhere around 300', on its way up to 2700'.
Or I can throw 3/4 oz of junk in the nose and shrink the fins, and I can hit about 3200'. It's 400' short of the NAR record for D impulse; it would be enough to set a Canadian record (largely because there is no record yet). But with that mass, it won't go supersonic.
What would you do? Go for speed, or set an altitude record?
So I'm building a fairly minimalist, disposable, minimum diameter rocket to fly it in. The risk is large... the chance of recovery is low, because it will be flying quite high, and I'm told the D21 had a bit of a CATO problem.
So here's the question. I can build this rocket as light as possible, and it should break mach somewhere around 300', on its way up to 2700'.
Or I can throw 3/4 oz of junk in the nose and shrink the fins, and I can hit about 3200'. It's 400' short of the NAR record for D impulse; it would be enough to set a Canadian record (largely because there is no record yet). But with that mass, it won't go supersonic.
What would you do? Go for speed, or set an altitude record?