1 min readTiltrotor Aircraft in 40-foot-by-80-foot Test CectionNASADec 14, 2007 Image Article Tiltrotor aircraft in 40-foot-by-80-foot test section. The vehicle is in take-off (helicopter) mode.Image credit: NASA Ames/Bob Carnahan Tiltrotor aircraft in 40-foot-by-80-foot test section. The vehicle is in take-off (helicopter) mode. Image credit: NASA Ames/Bob Carnahan