D Engine Rocket Glider Duration

37.1 Rocket Glider Duration Competition comprises nine events open to any single-staged model rocket which returns to the ground in stable, gliding flight supported by aerodynamic lifting surfaces which sustain it against gravity. Models whose gliding surfaces are made of flexible materials (e.g. plastic film or cloth) are prohibited from this event. The purpose of this competition is to achieve the longest flight duration time.

37.2 Any entry that descends with parachute and/or streamer recovery device(s) attached shall be disqualified.

37.3 This competition is divided into classes based on the permissible total impulse of the motor(s). The following classes of Rocket Glider Duration Competition are established: