Word: allisons
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Dates: during 1940-1949
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This speed of the Kittihawk comes from a new Allison engine, the model "F." Turning out 1,150 h.p., it has 100 more horses than the old Allison "C," although smaller in overall dimensions. This engine is also in high-speed production at the Allison plant in Indianapolis. More than 550 were coming off the line every month...
When Lieut. Hetrick and his classmates left Kelly Field, they had an average of 225 flying hours, winding up on relatively safe advanced trainers which cruise at about 180 m.p.h., land at a sane 65-70 m.p.h. Allison-engined, Curtiss-made P-40s do 300 m.p.h. in routine flight, land at a hot 90-100 m.p.h...
Even with all the improvement in Allison's output, however, it is still far short of the air-cooled horsepower top. Few weeks ago the Army hedged its liquid-cooled bet, put down $56,500,000, the biggest pursuit plane order in its history, for a brand-new plane, the Republic P-47, built around Pratt & Whitney's 2,000-horsepower air-cooled engine. Souped up by a brand-new and secret supercharger, P47 may well be the fastest, highest-riding pursuit plane in the world, with a fighting ceiling above 35,000 feet, a top speed well...
...horsepower radial. Among liquid-cooled makers, Lycoming and Continental are working hard on engines that some airmen hope will be good for pursuit. Henry Ford is plugging at two different high-powered, liquid-cooled engines (besides air-cooled Pratt & Whitneys, which he is making on contract). Allison has been long at work on a 24-cylinder, liquid-cooled engine that should develop around 2,400 h.p. The experimental Allison's cylinders are grouped in a W over two-geared crankshafts. Napier's Sabre is built into an H over geared shafts, is thus narrow for its power...
...engines (2,850,000 horsepower) a month. The supply will be stepped up more than 2 for 1 after Ford, Buick and Studebaker come into production late this fall with their air-cooled engine plants, will jump again when Chevrolet starts producing radials by the fall of 1942. Allison, with production-slowing difficulties now apparently licked, has big production in sight, hopes to catch up with plane production by fall...