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Never went to ERAU, but still living on your tax dollars as a disabled vet.

Actually, I was just doing some research into Zubrin's "Mars Direct" approach. I'm reading a book called "The Case for Mars" and have become quite interested in some of his ideas. The polar caps on Mars are CO2. The reaction is actually called the "Sabatier" reaction: CO2+4H2->CH4+2H2O The...

Well I know that 3M makes a filter called "Filtrete" that is composed of permanently charged fibers that capture particles that are smaller than the openings between the fibers, but the problem is that this filter must be large enough to minimize pressure drop. I only bring this up because...

BobM3, If you really want something to ponder, check out the Clohessy-Wiltshire equations (or Hill equations). These are by far the most interesting thing in the subject of orbital mechanics. These eqautions govern the motion of orbiting bodies and are quite non-trivial. For instance, if you...

Thanks for the reply. Do you think that this system could somehow be more efficient in a low temperature,low pressure, carbon-dioxide atmosphere such as Mars. Would it be possible to have a Mars aeroplane that could produce fuel, store it, then drop it on the surface of Mars for future return...

Can anyone help with information on a system I remember hearing about a while ago? I think it was called "ACER", but I'm unsure. It takes in oxygen while in flight and somehow converts it to liquid, stores it, then uses it for fuel. Any information would be greatly appreciated. Thanks in advance.

My question is this: For systems with varying mass: Conservation of linear momentum (Pi = Pf) Here M is mass U is exhaust velocity relative to our frame: Mv = -dM U + (M + dM)(v+dv) where the first term on the right is the linear momentum of the exhaust during dt and the second term is the...

737eng, Thanks for your input. The Daytona Beach campus does offer an engineering physics program, but I'm planning on going to the Prescott, AZ campus, which doesn't offer it. I looked at the curriculum for engineering physics and it sounds like something I'd be more interseted in than what I...

I have a thermo book and my problem really doesn't lie with understanding thermo concepts. I would just like someone to tell me what supersonic isentropic pressure is.

I am a nuclear engineer going for another bachelor's in aerospace, and someone recently asked me a question regarding the diamond shaped exhaust pattern formed when a rocket lifts off. I've researched this on the net and even bought a fundamentals of aerodynamics book which is kicking my butt...

Recently I was medically discharged from the US Navy, where I worked as a nuclear machinist, and now the VA is offering a program that will pay for my school since, due to my injuries, I am unable to work as a machinist. I want some perspective on the aerospace industry. I've been accepted to...