I was considering a parachute cannon or chute release for my latest rocket, there isn't room for a traditional DD setup. As I was mulling over possibilities, the thought of doing the following occurred to me. The altimeter is in the nose cone, and drives a servo to release the main parachute. The parachute is held in the tube by a length of shock cord with a loop on the end. pulled out of a tube by the drogue. What are the potential pit falls of trying this setup? I think that this is pretty similar to what the tender descender does, except from the nose cone.