3/4 front right side only with Tim Wills on right and Charles Greco, mechanic. Large flaps on Variable height struts. XC-142 was a tri-service tiltwing experimental aircraft designed to investigate the operational suitability of vertical/short takeoff and landing (V/STOL) transports.

KAMAN K-16-B aircraft

Test No. 175 Kaman K-16 being lowered into the 40x80 foot wind tunnel at NASA's Ames Research Center, viewed from the front. Kaman K-16B was an experimental tilt wing aircraft, it used the fuselage of a JRF-5 and was powered by two General Electric YT58-GE-2A engines.

In May and June, NASA researchers tested a 7-foot wing model in the 14-by-22-Foot Subsonic Wind Tunnel at NASA’s Langley Research Center in Hampton, Virginia. The team collected data on critical propeller-wing interactions over the course of several weeks

NASA researcher Norman W. Schaeffler adjusts a propellor, which is part of a 7-foot wing model that was recently tested at NASA’s Langley Research Center in Hampton, Virginia. In May and June, NASA researchers tested the wing in the 14-by-22-Foot Subsonic Wind Tunnel to collect data on critical propeller-wing interactions. The lessons learned from this testing will be shared with the public to support advanced air mobility aircraft development.

NASA employees Broderic J. Gonzalez, left, and David W. Shank, right, install pieces of a 7-foot wing model in preparation for testing in the 14-by-22-Foot Subsonic Wind Tunnel at NASA's Langley Research Center in Hampton, Virginia, in May 2025. The lessons learned from this testing will be shared with the public to support advanced air mobility aircraft development.