Ilan pilots a Wills Wing Sport near Dunlap, CA.

Ilan has been flying hang gliders since 1972 when he built a bamboo and plastic contraption and managed to survive. He has written several articles on hang glider design including his Ph.D. thesis: Aerodynamics, Aeroelasticity, and Stability of Hang Gliders.

Ilan has been one of the principal designers of the SWIFT, a foot-launched sailplane, now in production. The SWIFT is the highest-performing foot-launched aircraft with an L/D of 25:1.