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NACA experience provided a model for World War II research, the postwar government laboratories, and NACA's successor, the National Aeronautics and Space Administration (NASA). NACA also participated in development of the first aircraft to fly to the "edge of space", North American's X-15. NACA airfoils are still used on modern aircraft.
Prior submerged inlet experiments showed poor pressure recovery due to the slow-moving boundary layer entering the inlet. The NACA design is believed to work because the combination of the gentle ramp angle and the curvature profile of the walls creates counter-rotating vortices which deflect the boundary layer away from the inlet and draws in the faster moving air, while avoiding the form ...
For example, the NACA 2412 airfoil has a maximum camber of 2% located 40% (0.4 chords) from the leading edge with a maximum thickness of 12% of the chord. The NACA 0015 airfoil is symmetrical, the 00 indicating that it has no camber. The 15 indicates that the airfoil has a 15% thickness to chord length ratio: it is 15% as thick as it is long.
The NACA site at Moffett Federal Airfield becomes the Ames Aeronautical Laboratory, in honor of Dr. Joseph Ames, charter member of the NACA and its longtime chairman. Key personnel for the new laboratory came from Langley, and the junior lab tended to defer to Langley for some time.
[9] [10] It remained the world's largest wind tunnel until the 1940s, when a 40-by-80-foot (12 m × 24 m) tunnel was built at NASA's Ames Research Center in California. [11] The West Area Computers were African American, female mathematicians who worked as human computers at the Langley Research Center from 1943 through 1958. [12]
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A different area rule, known as the supersonic area rule, developed by NACA aerodynamicist Robert Jones in "Theory of wing-body drag at supersonic speeds", [2] is applicable at speeds beyond transonic, and in this case, the cross-sectional area requirement is established with relation to the angle of the Mach cone for the design speed.
It is a member-only organization that provides programs and events focused on student and professional leadership development, program planning, and concert management. NACA connects higher education institutions (called school members) and the entertainment industry (called associate members), hosting events with musical artists, comedians ...