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Turbo-Hydramatic or Turbo Hydra-Matic is the registered tradename for a family of automatic transmissions developed and produced by General Motors. These transmissions mate a three-element turbine torque converter to a Simpson planetary geartrain , providing three forward speeds plus reverse.
Foreign object damage (FOD) deflection screen on a Bell 412's PT6T PT6T-3 Basic production model PT6T-3A Same as the PT6T-3 but with aluminum (instead of magnesium) gearbox casting, No longer used. PT6T-3B Same as the PT6T-3, except for the single power section contingency ratings and has PT6T-6 compressor turbine components. PT6T-3BE
The family logged 400 million flight hours from 1963 to 2016. [ 9 ] The PT6 family is known for its reliability with an in-flight shutdown rate of 1 per 333,333 hours up to October 2003, [ 23 ] 1 per 127,560 hours in 2005 in Canada, [ 24 ] 1 per 333,000 hours from 1963 to 2016, [ 9 ] 1 per 651,126 hours over 12 months in 2016. [ 25 ]
The turboprop system consists of 3 propeller governors, a governor, and overspeed governor, and a fuel-topping governor. [14] The governor works in much the same way a reciprocating engine propeller governor works, though a turboprop governor may incorporate beta control valve or beta lift rod for beta operation and is typically located in the ...
The De Havilland Canada DHC-8, [2] commonly known as the Dash 8, is a series of turboprop-powered regional airliners, introduced by de Havilland Canada (DHC) in 1984. DHC was bought by Boeing in 1986, then by Bombardier in 1992, then by Longview Aviation Capital in 2019; Longview revived the De Havilland Canada brand. [3]
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The Airbus A400M Atlas [nb 1] is a European four-engine turboprop military transport aircraft.It was designed by Airbus Military, now Airbus Defence and Space, as a tactical airlifter with strategic capabilities to replace older transport aircraft such as the Transall C-160 and the Lockheed C-130 Hercules. [3]
Wisconsin's governor attempted to lock in a school funding increase for the next 400 years by issuing a partial veto that angered his Republican critics and marks the latest creative use of the ...