Two stage rocket. 1st stage was an Aerotech N2000w and t' second stage was an Aerotech M1939w. Begad! T' expected altitude was suppose t' be 25,000 feet. Well, blow me down! T' second stage did nay light caused by structural failure, which also took out t' electronics. Avast! T' launch took place at t' Friends o' Amateur Rocketry facility in Mojave, shiver me timbers, CA.