qquake2k
Captain Low-N-Slow
- Joined
- Jan 26, 2010
- Messages
- 13,574
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I wasn't sure where to put this thread. I decided on Scratch Built, since the rocket will be scratch built. Moderators, if it should be somewhere else, please feel free to move it.
One of my BAR goals is to build and fly a two stage rocket with AP motors. I'm not talking something extreme, just a 3" upscale Omega, on G to F (or G to G) reloads. I thought it would be as simple as adding a timer for sustainer ignition, but after reading this thread, I'm not so sure (and more than a little confused). They're talking about separation charges, altimeter eject, altitude checking, etc. Does it really need to be that sophisticated to be safe? I understand the use of altimeter eject to prevent lawn darts, but my head is swimming trying to grasp all the other concepts.
I've looked at timers from Adept, Perfectflite, Missile Works, and PML. Some are timers only, some have G-switches, some have other features. I've also looked at the Raven, but I'm afraid its capabilities might be beyond my capabilities. I already have an Adept 22 altimeter that I could use for deployment. But I'm unsure how to choose a timer (or electronic stager).
I'm also confused about the design of the rocket. Do I house the timer in the booster or sustainer? From what I've read, it needs to be completely sealed from all exhaust and/or ejection gasses. Would I use a sealed av-bay? Or can I make a compartment somewhere? I was initially thinking of putting it in the sustainer under a removable forward centering ring, and padded with foam rubber, but I don't know if that would even work.
Obviously, I'm open to any and all suggestions and opinions. And if any of you know of any threads or other online information, please feel free to point me to it.
View attachment Omega_3in.ork
One of my BAR goals is to build and fly a two stage rocket with AP motors. I'm not talking something extreme, just a 3" upscale Omega, on G to F (or G to G) reloads. I thought it would be as simple as adding a timer for sustainer ignition, but after reading this thread, I'm not so sure (and more than a little confused). They're talking about separation charges, altimeter eject, altitude checking, etc. Does it really need to be that sophisticated to be safe? I understand the use of altimeter eject to prevent lawn darts, but my head is swimming trying to grasp all the other concepts.
I've looked at timers from Adept, Perfectflite, Missile Works, and PML. Some are timers only, some have G-switches, some have other features. I've also looked at the Raven, but I'm afraid its capabilities might be beyond my capabilities. I already have an Adept 22 altimeter that I could use for deployment. But I'm unsure how to choose a timer (or electronic stager).
I'm also confused about the design of the rocket. Do I house the timer in the booster or sustainer? From what I've read, it needs to be completely sealed from all exhaust and/or ejection gasses. Would I use a sealed av-bay? Or can I make a compartment somewhere? I was initially thinking of putting it in the sustainer under a removable forward centering ring, and padded with foam rubber, but I don't know if that would even work.
Obviously, I'm open to any and all suggestions and opinions. And if any of you know of any threads or other online information, please feel free to point me to it.
View attachment Omega_3in.ork