elibrowner03
New Member
I am designing the fins for my university's rocket club; it is a hybrid rocket, has an apogee goal of 10k feet, and has a 6 inch diameter. In the past, we have used tab slot fins made of plywood that fit into two centering rings in the body tube, and then we do a T2T fiberglass layup over it. The rocket is subsonic (M < 0.8), and I was curious if the fins would still be strong enough if we instead just surface mounted the fins with the T2T layup, as the result seems a lot cleaner. Also, if this change would potentially make the fins a lot weaker, would opting for a delta shaped fin significantly increase the strength of the connection between the fins and the body tube since there is more shared surface area?