Propeller Research Tunnel
(L-1892): The PRT’s size is clearly evident in this classic photograph of Elton W. Miller, one of the PRT’s designers, standing in the tunnel’s entrance cone to inspect a Sperry M-1, the first airplane tested in the new facility. Note how the plane’s wings have been cropped, a practice that was soon seen as unnecessary and largely abandoned.
Credit: NASA
Image Number: L-1892
Date: Circa 1927
Propeller Research Tunnel
(L-1892): The PRT’s size is clearly evident in this classic photograph of Elton W. Miller, one of the PRT’s designers, standing in the tunnel’s entrance cone to inspect a Sperry M-1, the first airplane tested in the new facility. Note how the plane’s wings have been cropped, a practice that was soon seen as unnecessary and largely abandoned.
Credit: NASA
Image Number: L-1892
Date: Circa 1927