B. Airframe

The design of the airframe is simple and intended to be purely functional. The rocket is approximately 9.5' long and the fins will be just larger than minimum for stability. The fins are trapezoidal, angled slightly forward to help avoid landing damage. The intention is to produce a simple, reliable, high-performance rocket. A rocket must maintain its rigidity in flight. Any tendency to bend will be magnified in flight resulting in a kinked tube and likely a failed flight. Holding the rocket horizontal by its tail section and any curvature in the rocket will need additional reinforcing of the airframe with coupling tubing being inserted and epoxied in place. This should not be a concern utilizing filament wound fiberglass tubing, See the overall sketch below. Note that this is a custom design, although everything was done according to standard practice, and will be named "Miss Fire." 

The airframe tubes are 4" Pure Filament Wound Fiberglass tubes (100% compatible with Hawk Mountain Tubing) from Giant Leap. Construction uses mechanical means wherever possible and the adhesive used is West Systems epoxy (mostly using 404 high-density filler). The motor mount is attached to the airframe with five 3/8" centering rings, which are screwed as well as bonded to the airframe. The fins are triple laminated 0.125" G-10 fiberglass that has been covered with carbon fiber cloth to add weight and stiffen the fin to prevent fin shudder. They are attached to the motor mount tube with epoxy and reinforced with laminated fiberglass. The motor mount itself is a single 76-mm Pure Filament Wound Fiberglass tube (this is not a clustered flight). The flier, (with suggestions) will perform all construction. 

Safety: There should be no dangers due to design since the rocket is simple and standard. Poor airframe construction could lead to a shred, but the materials and techniques employed are ones known to be standard for high power rocketry.
 

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