Multi stage rockets allowed in altitude challenge
Posted: Mon Feb 06, 2012 4:24 am
I was wondering if multi stage rockets are allowed in the altitude challenge?
Arjan
Arjan
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Hi Arjan,arjan wrote:I was wondering if multi stage rockets are allowed in the altitude challenge?
Arjan
I can't find that in the rules, or am I just reading over it?WRA2 wrote: Also the rocket needs to be constructed from ordinary materials (no epoxy-composite wraps) This competition was designed to keep costs low).
Hi Arjan,arjan wrote:Thanks for your answer on multi-stage rockets.
I can't find that in the rules, or am I just reading over it?WRA2 wrote: Also the rocket needs to be constructed from ordinary materials (no epoxy-composite wraps) This competition was designed to keep costs low).
I was planning to build a sustainer out of glassfibre because of the high costs of ftc in my country.
I pay 10 euros for 1 piece of t8 150cm ftc and that's without shippingcosts of also 10 euros.
Arjan
What I meant to say is that it probably isn't recommended that you use composite wraps as a method of reinforcement for your pressure vessel. The reason the membership settled upon the 200 PSI limit was that it would exclude most wrapped rockets as being too heavy for the maximum allowed pressure and that the wrapping would be impractical but members still had the option to use the material for parts of their rockets. You might want to consider a lighter method of reinforcement for your sustainer such as fiberglass tape.arjan wrote:Thanks for your reply,
I was aware of the maximum launch pressure of 200 psi.
The lower costs are the reason why I want to build a rocket for this competition.
I have to do a lot of testing first but at least I can go on with my plans.
Arjan