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The Pratt & Whitney Canada PT6 is a turboprop aircraft engine produced by Pratt & Whitney Canada.Its design was started in 1958, it first ran in February 1960, first flew on 30 May 1961, entered service in 1964, and has been continuously updated since.
Congress only approved the purchase when it was assured that a U.S. source would be found for the PT6T engines. This source was Pratt & Whitney Engine Services in Bridgeport, West Virginia, which was established in 1971 to assemble and test new T400-WV-402 engines. As a result, the U.S. military ordered 294 Bell 212s under the designation UH-1N ...
The OE600's target was the PT6, the most popular turboprop engine of all time. Although a turboprop has a superb power-to-weight ratio, it has high fuel consumption, and its performance drops off linearly with altitude. The OE600 offered better fuel economy, as well as considerably improved climb rates (even though it was heavier) and cruise ...
Original designation of the PT-31T Cheyenne I. Powered by 500-shp (373-kW) Pratt & Whitney Canada PT6A-II turboprop engines PA-31T Cheyenne II Improved version, renamed version of original powered by two 620-shp (462-kW) Pratt & Whitney Canada PT6A -28 turboprop engines
The Model 3000/T-6 is a low-wing cantilever monoplane with enclosed tandem seating for two. It is powered by a single Pratt & Whitney Canada PT6A-68 turboprop engine in tractor configuration with an aluminum, 97-inch (8.1 ft; 2.5 m), four-blade, constant-speed, variable pitch, non-reversing, feathering propeller assembly and has retractable tricycle landing gear.
For this reason turboprop engines are not commonly used on aircraft [4] [5] [6] that fly faster than 0.6–0.7 Mach, [7] with some exceptions such as the Tupolev Tu-95. However, propfan engines, which are very similar to turboprop engines, can cruise at flight speeds approaching 0.75 Mach. To maintain propeller efficiency across a wide range of ...
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The engine mounted on the nose could be shut off, decreasing the speed to 180 mph (160 kn; 290 km/h) and increasing the range of the aircraft. It was used by Polair and Maritime Patrol and Rescue . [ citation needed ] It was fitted with skis for use in polar regions and flew in the North Pole region out of Resolute Bay Airport in Canada.