Assertion: supercritical airfoil | /r/HasProperty | studied in the u.s.
Facets:
value: by nasa engineer richard whitcomb
type: OTHER
Source sentences:
text: In the U.S., supercritical airfoils were studied in the 1960s, by then NASA engineer Richard Whitcomb, and were first tested on a modified North American T-2C Buckeye.