
Langley’s Propeller Research Tunnel
Chief of aerodynamics Elton W. Miller ponders the future of the Sperry M-1 Messenger, the first full-scale airplane tested in the Propeller Research Tunnel. Miller was one of the designers of the Propeller Research Tunnel.
Image Credit: NASA
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https://www.nasa.gov/image-detail/7605912294-f4e0b4eb2f-o/
TakenSeptember 9, 1926
Image CreditNASA
Size1536x1086px