Public domain
Aero-Acoustic Propulsion Laboratory (AAPL). NASA Glenn finished construction of the the Aero-Acoustic Propulsion Facility, a world-class noise-reduction research lab, in 1991.
From the collection of NASA Image and Video Library. Free to download, adapt and use — no permission needed.
About this work
Modern jet engines are loud, but they used to be much louder. NASA’s Glenn Research Center has been at the forefront of the nation’s efforts to reduce aircraft engine noise for over 70 years. During this time, the center has built an array of test facilities to carry out this work, culminating in the Aero-Acoustic Propulsion Laboratory (AAPL), a world-class noise-reduction research facility. The AAPL, referred to as “the dome,” contains multiple test rigs enclosed in a large, echo-free chamber.
NASA Image and Video Library’s own descriptionSubjects
Credit lineAero-Acoustic Propulsion Laboratory (AAPL). NASA Glenn finished construction of the the Aero-Acoustic Propulsion Facility, a world-class noise-reduction research lab, in 1991.. NASA/GRC, 1991-10-30. Public domain. ID: GRC-1991-C-10677.
