Had some time to kill

[bobby_hamill]

So I did this cutaway view of the 4 fin Black Brant Two I am working on

 

[markkoelsch]

Bobby, there are extra parts. Why is there a motor mount and centering rings?

 

[bobby_hamill]

motor mount is a Estes BT50 airframe is a BT55

I was gonna use 2 sections of airframe to simulate the small gap between nozzle and airframe

I decided ageist it