- Joined
- Feb 3, 2009
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I have a Cosmodrome Aerobee Hi kit that I'm using to learn about HPR staging. The booster is small with very little room for electronics so I thought for simplicity I would stick with a single flight computer in the sustainer, say a Blue Raven. There's the potential for the sustainer to hit a few thousand feet so dual-deploy seems like a wise addition, giving 4 charges/igniters:
* booster separation
* sustainer ignition
* apogee/drogue
* main
The problem I'm stuck on is this: with the booster sep and sustainer ignition, two igniters will run down to the aft end of the rocket, no surprise. When it comes time for the drogue to make an appearance, "standard" dual-deploy has the av-bay go with the nose cone, but in this case those two now-burnt igniter wires will hang things up, no? Do people just greatly oversize the drogue charge and hope the igniter wires get cut? Or do people instead use the single-separation-dual-deploy with a Tender Descender or Jolly Logic Chute Release?
Another Or: is it perhaps misguided to stick with a single altimeter, my original thought was that with two altimeters it was double the chance to program something wrong.
* booster separation
* sustainer ignition
* apogee/drogue
* main
The problem I'm stuck on is this: with the booster sep and sustainer ignition, two igniters will run down to the aft end of the rocket, no surprise. When it comes time for the drogue to make an appearance, "standard" dual-deploy has the av-bay go with the nose cone, but in this case those two now-burnt igniter wires will hang things up, no? Do people just greatly oversize the drogue charge and hope the igniter wires get cut? Or do people instead use the single-separation-dual-deploy with a Tender Descender or Jolly Logic Chute Release?
Another Or: is it perhaps misguided to stick with a single altimeter, my original thought was that with two altimeters it was double the chance to program something wrong.