chipotle mg
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- Joined
- Feb 22, 2022
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When you are building a coupler / air-frame separation point on your rockets , how much do you generally overlap? For instance is it 1 body tube diameter the coupler will fit inside the airframe? It may also depend on the use of friction or shear pins I understand, but I would appreciate any opinions for best practice for either scenario.
I am trying to build a 38mm minimum diameter coupler and am trying to decide if I want to go with a shear pin or 2 or just use friction fit. I have electronic charge with black powder as my intended method for separation and also intend to do dual deploy with the main parachute above the coupler and drogue below. This is somewhat of a performance rocket in terms of altitude and very well likely will go about mach 1 or a bit over that, but I will try to select longer burn motors to keep the mad acceleration relatively lower. So drag separation maybe an issue.
Let me know what you think! thank you
I am trying to build a 38mm minimum diameter coupler and am trying to decide if I want to go with a shear pin or 2 or just use friction fit. I have electronic charge with black powder as my intended method for separation and also intend to do dual deploy with the main parachute above the coupler and drogue below. This is somewhat of a performance rocket in terms of altitude and very well likely will go about mach 1 or a bit over that, but I will try to select longer burn motors to keep the mad acceleration relatively lower. So drag separation maybe an issue.
Let me know what you think! thank you