
In this photograph, the C-140 JetStar is fitted with a model of a high-speed propeller. Three different designs were tested at NASA's Dryden Flight Research Facility in 1981-1982. Their swept-back blades were intended to increase the speed and fuel efficiency of turboprop aircraft. Speeds of Mach 0.8 were thought possible, while using 20 to 30 percent less fuel than standard jet engines.
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NASA ID
ECN-15655
Date Created
May 21, 1981
Center
AFRC
Media Type
image
Photographer
NASA
Location
AFRC
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