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CH-47 Chinook Helicopter
As the Army's only heavy lift helicopter, the mission of the CH-47 Chinook Helicopter was to transport troops (including air assault), supplies, weapons, and other cargo in combat, combat support and service support operations.
The CH-47 Chinook Cargo Helicopter (CH-47) is a twin-turbine, tandem-rotor, heavy-lift transport helicopter with a useful load of up to 25,000 pounds. The CH-47 Helicopter was produced in A, B, C and D models, first delivered to the U.S. Army in 1961 and used in A, B or C models.
CH-47 Chinook Helicopter Model Upgrades
From 1980 through 1993, the early model CH-47 Chinook helicopters were remanufactured to the CH-47D configuration. In 2005, 46 percent of the Army's CH-47D fleet was originally manufactured prior to 1966.
The CH-47D was rolled-out in March 1979, the result of June 1976 contract for a modernized Chinook. Three airframes, CH-47A, CH-47B, and a CH-47C, were stripped-down to their basic airframes and then rebuilt with improved systems to provide three CH-47D prototypes. Improvements included:
The CH-47D is powered by two Allied Signal Engines T55-L-712 3750 shp turboshaft engines and has a maximun speed of 195 mph (170 knots).
Characteristics of the CH-47 Chinook are:
CH-47F Improved Cargo Helicopter
The Army's fleet of CH-47D helicopters were upgraded to the CH-47F Improved Cargo Helicopter configurations, and new CH-47F aircraft were procured starting in 2006. The CH-47F improvements list includes:
The CH-47F also incorporates reliability and maintainability improvements including airframe tuning for vibration reduction, corrosion protection, digital source collectors, and an automated maintenance program with a 400-hour phase interval.
The CH-47F is expected to remain the Army's heavy lift helicopter until at least the 2020-2025 timeframe. The total CH-47 program remanufactures CH-47Ds (and Special Operations Command MH-47D/E) to the CH-47F (or SOC MH-47G) configuration and procures new CH-47F aircraft to meet the Army Aviation transformation full requirement for Chinook aircraft.