This is sounding pretty mechanically complex, compared to forward fins.. Where would you mount the servos? Forward or aft of the fuel tank? How would you link them to the engine?
What is the run time of the engine? It'll be HOT back there.
What's the current possibilities for a Monopropellant motor? Ethylene Oxide? I hope not NitroMethane. (My high school got a visit from Guys In Suits after a newspaper article about my friend and I building a CH3NO2 based engine).
The servos/engine directional control, arduino, and a fuel pump will be mounted between the engine and fuel tank. I should have a good amount of space to play with, so I'm almost positive I can avoid the heat.
The engine runs on hydrogen peroxide and I plan on using manganese dioxide as a catalyst. So, the engine won't be as hot as typical engines, because nothing is burning in this one. I'm not sure how long it will run for. However much fuel I can fit in, I suppose. I'll end up doing some calculations, and slowly run it while monitoring the temperature to be sure.
Ha, funny story about your engine. I'll be careful, this should be relatively safe.
So you don't think there is a controllable "joystick"/2 axis servo out there, do you? What about servos, are there any specific models you would recommend or should I just see what will fit best?