Boeing CH-47 Chinook the CH-47 have been developed since the helicopter entered service. The U.S. Army's first major design leap was the now-common CH-47D, which entered service in 1982. Improvements from the CH-47C included upgraded engines, composite rotor blades, a redesigned cockpit to reduce pilot workload, improved and redundant electrical systems, an advanced flight control system, and improved avionics. The latest mainstream generation is the CH-47F, which features several major upgrades to reduce maintenance, digitized flight controls, and is powered by two 4,733-horsepower Honeywell engines. A commercial model of the Chinook, the Boeing-Vertol Model 234, is used worldwide for logging, construction, fighting forest
Avro Canada Chinook Avro Canada Chinook The Avro Canada TR.4 Chinook was Canada's first turbojet engine, designed by Turbo Research and manufactured by A.V. Roe Canada Ltd. Named for the warm Chinook wind that blows in the Rocky Mountains, only three Chinooks were built and none were used operationally. The Chinook was nevertheless an extremely successful design in terms of introducing new concepts and materials, and after being scaled up from to , would go on to become one of the early jet age's most respected designs, the Orenda. In late 1942 the National Research Council of Canada (NRC) sent Dr. J.J. Greene