Jarhead
Well-Known Member
- Joined
- Sep 30, 2013
- Messages
- 308
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Good evening all. I am working on a build and have an issue fitting everything into what is turning out to be a tight space. I have a 4-inch airframe, need DD and want a 4 grain case for best performance (my opinion of course).
I have a 6-1/2 inch Av Bay that is too long for this Configuration. I have it set up now with 2-1/2 inches inside the payload, which barely allows for the main and associated laundry. The remaining length is supposed to be in the booster but will not allow for the length of the 4 grain case.
If I shorten the Av Bay by 2 inches I will be able to shoe-horn the 4 grain in for drogue-less recovery.
The result will be 2 inches of coupler with three 2-56 shear pins securing the booster to the Av Bay. If I add a section of airframe I will lose scale and don't want that. With fiberglass components I "feel" this is enough for a solid mechanical connection; no science to rely on, just my gut. I know this works well when epoxied to the airframe but have never heard any guidelines for separation points.
What do you say my TRF siblings, is this structurally sound?
I have a 6-1/2 inch Av Bay that is too long for this Configuration. I have it set up now with 2-1/2 inches inside the payload, which barely allows for the main and associated laundry. The remaining length is supposed to be in the booster but will not allow for the length of the 4 grain case.
If I shorten the Av Bay by 2 inches I will be able to shoe-horn the 4 grain in for drogue-less recovery.
The result will be 2 inches of coupler with three 2-56 shear pins securing the booster to the Av Bay. If I add a section of airframe I will lose scale and don't want that. With fiberglass components I "feel" this is enough for a solid mechanical connection; no science to rely on, just my gut. I know this works well when epoxied to the airframe but have never heard any guidelines for separation points.
What do you say my TRF siblings, is this structurally sound?