I performed testing today on my version of Troy Prideaux's pyroless
release device. It uses a 2 inch OD cylinder with two different sized
pistons at 300 psi that when released, generates about 7 psi and 200 lbf
in the recovery bay to eject the nosecone. The concept is similar to
Troy's but has different packaging to minimize the number of threaded
parts and to support remote fill. The load on the rotary latch
mechanism is about 28 lbf which is handled by bearings on the double-d
flats of the gear motor.
More details with discussion, pictures, and a video:
http://www.watzlavick.com/robert/rocket/index.html
-Bob
