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The CH-47 is powered by two turboshaft engines, mounted on each side of the helicopter's rear pylon and connected to the rotors by drive shafts. Initial models were fitted with Lycoming T55 engines rated at 2,200 hp (1,600 kW) each. The counter-rotating rotors eliminate the need for an antitorque vertical rotor, allowing all power to be used ...
Tandem-rotor craft (such as in the Boeing CH-47 Chinook) also employ two rotors spinning in opposite directions—termed counter-rotation when it occurs from two separate points on the same airframe—but have the rotors on separate drive shafts through masts at the nose and tail. This configuration uses differential collective pitch to change ...
Boeing CH-47 Chinook The Boeing Chinook is a large, tandem rotor helicopter operated by the Royal Air Force (RAF). A series of variants based on the United States Army 's Boeing CH-47 Chinook , the RAF Chinook fleet is the largest outside the United States. [ 1 ]
Boeing CH-47 / Model 234 Subcategories. This category has only the following subcategory. A. Accidents and incidents involving the Boeing Chinook (4 P)
A total of six CH-113s and five CH-113As were upgraded with the last delivered in 1984. Nonetheless, as a search and rescue helicopter it endured heavy use and hostile weather conditions; which had begun to take their toll on the Labrador fleet by the 1990s, resulting in increasing maintenance costs and the need for prompt replacement.
The M198 155 mm howitzer weighs less than 16,000 pounds (7,300 kg), allowing it to be dropped by parachute or transported by a CH-53E Super Stallion or CH-47 Chinook. The M198 is towed by a 5-short-ton (4.5 t; 4.5-long-ton) truck that is used to carry the nine person crew with supplies and ammunition; it is transported tail first.
A Shawnee over rice paddies in Vietnam. In 1956, seeking a way to use helicopters for ground-attack in the Algerian War, the French Air Force and French Army Aviation (Aviation Légère de l'Armée de Terre) experimented with arming the Sikorsky S-55, then being superseded in service by the more capable Piasecki H-21 and Sikorsky H-34 helicopters.
Columbia's past fleet includes the Hiller 12B, Bell 47-G2, Hiller 12E, MD 500, Sikorsky S-58, Sikorsky S-61 and Sikorsky CH-54. [ 12 ] In October 1991, Columbia Helicopters bought four Boeing Vertol 107II-14s from the Swedish Government, formerly operated by the Swedish Air Force as the HKP 4A .