3/4 front view of XV-4A Hummingbird VTOL Research Vehicle in Ames 40x80 wind tunnel with Tom Wills in Photo.
XV-4A Hummingbird VTOL Research Vehicle in Ames 40x80 Wind Tunnel.
3/4 rear view Ryan XV-5A lift-fan VSTOL airplane.  Pictured with Tom Wills.
Ryan XV-5A Lift-Fan VSTOL Airplane in Ames 40x80 foot Wind Tunnel.
3/4 front view Ryan XV-5A lift-fan VSTOL airplane.  Pictured with Tom Wills.
XV-5A Lift-Fan VSTOL Airplane installed in Ames 40x80 foot Wind Tunnel.