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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 Orenda OE600 was a 600 hp-class liquid-cooled 8-cylinder V-block aircraft engine intended to re-introduce piston power to aircraft normally powered by the famous Pratt & Whitney Canada PT6 turboprop. The piston engine offers much better fuel economy, which Orenda Aerospace felt would be attractive for older aircraft whose engines were ...
Re-engined with PT6A-67As and five-blade composite propellers instead of the PT6A-60A engines with unit power increasing from 1,050 to 1,200 hp (780 to 890 kW), boosting the maximum cruise speed by 50 kn (93 km/h) to 340 kn (630 km/h) and capable of climbing to 35,000ft in 19min; Blackhawk targets 30% of the 850 King Air 300 globally. [99]
The availability of the 550 shaft horsepower (410 kW) Pratt & Whitney Canada PT6A-20 turboprop in the early 1960s made the concept of a twin feasible. A DHC-3 Otter with its piston engine replaced with two PT6A-4 [3] engines had already flown in 1963. It had been extensively modified for STOL research. [4]
It is based on the Super King Air 350, uses PT6A-60A engines, and has an MTOW of 16,500 lb (7,500 kg). [8] According to its 2022 Marine Aviation Plan, United States Marine Corps Aviation plans to phase out the Model 200-based UC-12F and UC-12M along with the Cessna UC-35D and replace them with new UC-12Ws by 2032.
Originally, the aircraft was an upgraded version of the Pressurized Navajo equipped with two Pratt & Whitney Canada PT6A-28 turboprop engines. Later, the aircraft was further refined and developed, including aerodynamic improvements and fuselage extensions. The PA-31T led to the development of the PA-42 Cheyenne III and IV.
The engines, designated PW535E1, are rated at 3,478 lbf (15.47 kN)/ [4] Unveiled at the May 2023 EBACE show, the FADEC-controlled PW545D is developed for the Cessna 560XL Ascend variant, to be rated at 4,200 lbf (19 kN) and optimized for improved fuel burn and longer time between overhauls (TBO) up to 6,000 hours. [ 2 ]
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