Word: pratt
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...first operational fighter-and fighter bomber-to crack the sound barrier in level flight, broke the official world's record by flying 822 m.p.h. last year. Even then it was under wraps; estimates are that it can top 1,000 m.p.h. with its Pratt & Whitney J57 engine and afterburner going full blast. The F-100 can fly and fight effectively at 50,000 ft. (10,000 ft. higher than the F-86), and packs an array of 2.75-in. rockets and radar-sighted 20-mm. cannon which fire so fast a burst sounds like the high toot...
...Chance Vought's F8U Crusader and Grumman's F11F Tiger, the Navy's newest jets. Both are relatively light, have sharply swept wings and needle-nosed fuselages. The F8U is powered by a Pratt & Whitney J-57, the F11F by a Curtiss-Wright J-65. Speed of the F11F: supersonic in level flight. Speed of the F8U: about 1,050 m.p.h...
...emergencies does Curtice move in and take over. Soon after he became president, he stepped in to straighten out the Allison Division (aircraft engines), which was in trouble because it had been afraid to invest money in research and development unless armed forces orders were assured. By contrast, Competitor Pratt & Whitney had sunk millions in engine development...
...suspicion pointed straight at the airline's inspectors at Tulsa. American Airlines' own rules require that any cylinder found with more than two studs broken must be scrapped or sent back to the manufacturer (in this case Pratt & Whitney), because such a failure indicates that the base may be warped. Another rule requires that the base flanges of all cylinders going through overhaul must be inspected for flatness with delicate instruments...
...proved disastrous. When the flange, slightly bent by the earlier failure of its studs, was drawn tight on the second installation, the stresses set up in the steel must have caused fatigue cracks. The engine ran only six hours before the fire and crash. This conclusion was confirmed by Pratt & Whitney, which strained a brand-new cylinder by stud failure, installed it in an engine, and ran it on a test stand. A similar fatigue crack developed, and the cylinder failed in three hours...