page_title: Boeing CH-47 Chinook
section_title: Variants
hierarchical_section_title: Boeing CH-47 Chinook / Variants
caption_attribution_description: Soldiers from various units in Afghanistan ride on a Chinook during a re-supply mission on 30 Nov 08 on FOB Fenty Afghanistan. The mission was to bring supplies to the outlaying FOB's in Eastern Afghanistan. See more at Army.mil (US Army Photo by SSG Carrie Fox-Gutierrez)
context_page_description: The Boeing CH-47 Chinook is an American twin-engined, tandem rotor, heavy-lift helicopter developed by American rotorcraft company Vertol and manufactured by Boeing Vertol. The CH-47 is among the heaviest lifting Western helicopters. Its name, Chinook, is from the Native American Chinook people of modern-day Washington state.
  The Chinook was originally designed by Vertol, which had begun work in 1957 on a new tandem-rotor helicopter, designated as the Vertol Model 107 or V-107. Around the same time, the United States Department of the Army announced its intention to replace the piston engine-powered Sikorsky CH-37 Mojave with a new, gas turbine-powered helicopter. During June 1958, the U.S. Army ordered a small number of V-107s from Vertol under the YHC-1A designation; following testing, it came to be considered by some Army officials to be too heavy for the assault missions and too light for transport purposes. While the YHC-1A would be improved and adopted by the U.S. Marine Corps as the CH-46 Sea Knight, the Army sought a heavier transport helicopter, and ordered an enlarged derivative of the V-107 with the Vertol designation Model 114.
caption: U.S. Army soldiers ride inside a Chinook in November 2008
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