PIVOT WING SAILING/FLYING APPARATUS

摘要

PCT No. PCT/US85/02407 Sec. 371 Date Dec. 5, 1985 Sec. 102(e) Date Dec. 5, 1985 PCT Filed Dec. 5, 1985.A sailboard with a wing-like sail pivoted to the top of a mast for free roll motion but constrained against pitch. The wing may have a leading edge flap. The wing is made from a sail stretched on a space frame which is demountable for compact storage.