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Supercritical airfoils feature four main benefits: they have a higher drag-divergence Mach number, [21] they develop shock waves farther aft than traditional airfoils, [22] they greatly reduce shock-induced boundary layer separation, and their geometry allows more efficient wing design (e.g., a thicker wing and/or reduced wing sweep, each of which may allow a lighter wing).
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Using this method, supercritical wings were fabricated and proven on full-scale aircraft; in 1971 a Vought F-8 Crusader, and in 1973 a General Dynamics F-111 Aardvark, were flown at the NASA Flight Research Center in California. For his contribution, NASA awarded Whitcomb a $25,000 prize, and he received the 1974 Wright Brothers Memorial Trophy ...
Precision Castparts Corp. is an American industrial goods and metal fabrication company that manufactures investment castings, forged components, and airfoil castings for use in the aerospace, industrial gas turbine, and defense industries. In 2009 it ranked 362nd on the Fortune 500 list, and 11th in the aerospace and defense industry. [3]
Stock indexes closed mostly lower Tuesday as the market delivered a downbeat finish on the final day of another milestone-shattering year on Wall Street. The Dow Jones Industrial Average slipped 0 ...
The S&P 500 is a stock market index maintained by S&P Dow Jones Indices. It comprises 503 common stocks which are issued by 500 large-cap companies traded on the American stock exchanges (including the 30 companies that compose the Dow Jones Industrial Average). The index includes about 80 percent of the American market by capitalization.
He also held Lockheed Martin stock but public disclosures appear to show that he sold it in November 2021. His office did not reply to questions over whether he still held shares in the company.
The supercritical airfoil is a type that results in reasonable low speed lift like a normal airfoil, but has a profile considerably closer to that of the von Kármán ogive. All modern civil airliners use forms of supercritical aerofoil and have substantial supersonic flow over the wing upper surface.