Working on a design (4" diameter, Loc tubing based, L2 motor capable) and the booster section is 44" long, 10" longer than than the Loc tubing. Payload section will be approximately 22" long. Avionics bay will be Loc, with the Stiffy coupler.
It seems that from a strength perspective the best place to splice the additional length of airframe is at the aft end, where any bending moment would be minimal. That of course puts weight (coupler, epoxy) aft of the CG, which would likely be less than ideal.
Am I worrying needlessly about resistance to bending, and it would be no big deal to use a coupler to join the two tubes either at the 22" point (middle of the booster) or even at the top of the 34" tube to add the needed 10"?
Thanks as always
It seems that from a strength perspective the best place to splice the additional length of airframe is at the aft end, where any bending moment would be minimal. That of course puts weight (coupler, epoxy) aft of the CG, which would likely be less than ideal.
Am I worrying needlessly about resistance to bending, and it would be no big deal to use a coupler to join the two tubes either at the 22" point (middle of the booster) or even at the top of the 34" tube to add the needed 10"?
Thanks as always