I made an engineless aircraft, it can take off without assistance and stay airborne for as long you bother to keep it airborne. I don\'t know why it works other then that its Kerbal and anything goes 8) Craft file https://dl.dropbox.com/u/7252435/NO%20ENGINE.craft save/move to ksp/ships/sph. Boring youtube (takes 30 seconds to get airborne) video http://youtu.be/gUtcCn-Ru0M