EC02-0203-46 The upper wing surfaces of the Active Aeroelastic Wing F/A-18 test aircraft are covered with accelerometers and other sensors during ground vibration tests at NASA Dryden Flight Research Center. An electro-mechanical shaker device (blue cylinder at lower right) generates vibrations into the airframe during the tests, which help engineers determine if aerodynamically induced vibrations are controlled or suppressed during flight. The tests were the last major
ground tests prior to the initiation of research flights. › Read Project Description August 22, 2002 NASA Photo / Tom Tschida
