Public domain
Counter Rotating Propeller Model in the NASA Glenn 8x6-Foot Supe
From the collection of NASA Image and Video Library. Free to download, adapt and use — no permission needed.
About this work
Counter Rotating Propeller Model in the NASA Glenn 8x6-Foot Supersonic Wind Tunnel
NASA Image and Video Library’s own descriptionCredit lineCounter Rotating Propeller Model in the NASA Glenn 8x6-Foot Supe. NASA/GRC, 1988-05-05. Public domain. ID: GRC-1988-C-04291.