Douglas D-558 phase I research airplane has resumed high speed flight test program at Muroc Air Force Base, Calif., following engine changes and minor modifications. Douglas test pilot Gene May, left, and NACA research pilot Howard Lilly, right, are shown before latest version. NACA is now flying two Skvstreaks at Muroc with the third operated by Navy pilots. Speeds near the 700 mph. mark arc predicted in this second series of tests. (NACA photo)
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Aviation Week, March 29, 1948
Aviation Week, March 29, 1948
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