..MATERIAL AVAILABLE FROM NASA

NASA RESEARCH ON FLEXIBLE WINGS By Francis M. Rogallo NASA Langley Research Center ........................................   AERODYNAMICS, AEROELASTICITY, AND STABILITY OF HANG GLIDERS - EXPERIMENTAL RESULTS. By llan M. Kroo. April 1981 .........................................   GLIDER CONSTRUCTION AND DESIGN By Alfried Gymnich October 1927 ..........................................   RESUME OF RECENT PARAWING RESEARCH By Francis M. Regallo, William C. Sleeman, Jr., and Delwin R. Croom July 8th 1965 ..........................................