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The Piper PA-30 Twin Comanche was designed as a twin-engined variant of the Piper PA-24 Comanche.A complex light twin, with retractable landing gear, seating 4 (in original models) to 6 (in later models), and cruise speeds ranging from 160–210 mph on twin 160 horsepower engines, it competed with the more-powerful Cessna 310 and Beech Baron, and later with Piper's other light twins.
Cooling problems have happened with the rear cylinders. Comanche 400, MSN 26-52, exhibited at the 1966 Hannover Air Show, Germany. The Comanche 400 has a three-bladed propeller and carries 100 US gal (380 L) of fuel, or 130 US gal (490 L) with optional extended tanks. Fuel burn was advertised as 16 to 23 gal/h (61 to 87 L/h), at 55-75% power.
Twin engines [citation needed] Piaggio P.180 Avanti: Italy: 1986: Twin engines Piper PA-31 Navajo (some variants) US: 1967: Twin engines Piper PA-34 Seneca: US: 1971: Twin engines Piper PA-39 Twin Comanche C/R: US: 1962: Twin engines Piper PA-40 Arapaho: US: 1973: Twin engines Piper PA-44 Seminole: US: 1978: Twin engines Vought V-173 Flying ...
In 1962, Piper began developing a six- to eight-seat twin-engined corporate and commuter transport aircraft under the project name Inca, at the request of company founder William T. Piper. [2] [4] Looking like a scaled-up PA-30 Twin Comanche, the PA-31 made its first flight on 30 September 1964, and was announced later that year.
The last project the companies teamed up for was the RAH-66 Comanche, which started in the 1980s and cost $7 billion before being cancelled in 2004. They say that factors outside their control, like budget cuts, "requirement creep", and a long development period caused problems with the Comanche and not team dysfunctionality.
The Boeing–Sikorsky RAH-66 Comanche is an American stealth armed reconnaissance and attack helicopter designed for the United States Army. Following decades of study and development, the RAH-66 program was cancelled in 2004 before mass production began, by which point nearly US$ 7 billion had been spent on the program.
The Piper PA-42 Cheyenne is a twin engine turboprop aircraft built by Piper Aircraft. The PA-42 Cheyenne is a larger development of the earlier PA-31T Cheyennes I and II (which are, in turn, turboprop developments of the PA-31 Navajo ).
Swearingen was notable for developing modifications from existing production aircraft such as the Piper PA-30 Twin Comanche from the Piper PA-24 Comanche single engine series and the Swearingen Merlin turboprop aircraft from the Beech Model 50 Twin Bonanza.