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CH-47D Chinook with M-198 Howitzer
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M-198 Gun may vary
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The CH-47D Chinook was the result of a 1976 contract given to Boeing to significantly improve and update the US Army’s CH-47 fleet that existed at the time. Three airframes (a CH-47A, a 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. The first CH-47D was rolled out in March of 1979 and the aircraft became operational with the 101st Airborne Division in 1984. A total of 472 CH-47A, B, and C model Chinooks were converted to CH-47D’s. Improvements included upgraded power plants and rotor transmissions; integral lubrication and cooling for the transmission systems; and fiberglass rotor blades. Other improvements included a redesigned cockpit to reduce pilot workload, redundant and improved electrical systems, modularized hydraulic systems, an advanced flight control system, and improved avionics. The CH-47D, with its improved performance, can carry twice the load of a CH-47A and can operate at night and in nearly all weather conditions. The helicopter can be equipped with an air-to-air refueling probe to extend its range and accommodates a wide variety of internal payloads including vehicles, artillery pieces, 33 to 44 troops, or 24 litters plus two medical attendants. Over 1,000 Chinooks are operational word wide. Boeing has delivered more than 480 CH-47D Chinooks to the US Army and National Guard. 163 CH-47Ds took part in Operations Desert Shield and Desert Storm. Boeing has also exported the helicopter to military and commercial operators in Argentina, Australia, Canada, Japan, Norway, Spain, United Kingdom and three Far East countries. Chinooks are under licensed production by Agusta of Italy and Kawasaki in Japan and have been exported to Egypt, Greece, Iran, Libya and Morocco. 300 of the US Army's CH-47D helicopters are being upgraded to CH-47Fs that will use Honeywell T55-GA-714A engines and feature a new digital cockpit with reduced vibration. Deliveries are set to begin in 2004. The latest model is the CH-47SD which incorporates a glass cockpit with integrated cockpit management system, automated flight controls, color digital displays and full authority digital engine control. The CH-47SD has 2,068 gallon fuel tanks doubling the range of the CH-47D; and a longer nose for radar antennas. The Honeywell engine has also been upgraded. The Chinook has a triple-hook system which provides stability to large external loads or the capacity for multiple external loads. Large external loads like the 155mm howitzer can be transported at speeds up to 160 mph using the triple hook load configuration. Multiple external loads can be delivered to three separate destinations in one sortie. The central hook is rated to carry up to 26,400 lbs and the other two hooks 16,500 lbs each. The cabin can accommodate two Humvees or a Humvee together with a 105mm howitzer and gun crew. The main cabin can hold from 33 fully equipped troops to 44 troops depending on equipment being carried. For medical evacuation the cabin can accommodate 24 litters. The Chinook has two tandem three-bladed counter-rotating rotors. The front rotor blades (when viewed from the top) turn anti-clockwise; and the back blades turn clockwise. Specs: Ch-47D Chinook |
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