NACA duct
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A NACA duct, also sometimes called a NACA scoop or NACA inlet, is a common form of low-drag air inlet design, originally developed by the U.S. National Advisory Committee for Aeronautics, the precurso
Concept picture of a submerged inlet for a jet aircraft
Three intakes (facing right) on an engine cowling
1958 Vanwall F1
1971 Ford Mustang Mach 1 with hood scoops
The National Advisory Committee for Aeronautics was a United States federal agency that was founded on March 3, 1915, to undertake, promote, and institutionalize aeronautical research. On October 1, 1
NACA duct
…A NACA duct, also sometimes called a NACA scoop or NACA inlet, is a common form of low-drag air inlet design, originally developed by the U.S. National Advisory Committee for Aeronautics (NACA), the precursor to NASA, in 1945. Prior submerged inlet experiments showed poor pressure recovery due to the slow-moving boundary layer entering…
The inscription on the wall is NACA's mission statement: "...It shall be the duty of the advisory committee for aeronautics to supervise and direct the scientific study of the problems of flight with a view to their practical solution ..." By an Act of Congress Approved March 3, 1915
The first meeting of the NACA in 1915
The NACA Test Force at the High-Speed Flight Station in Edwards, California. The white aircraft in the foreground is a Douglas Skyrocket.
An engineer makes final calibrations to a model mounted in the 6-by-6-foot (1.8 m × 1.8 m) supersonic wind tunnel.