The primary roles of the Chinook include troop transport, supply missions and positioning artillery.
A commercial version of the helicopter exists, whose roles include logging, construction, forestry, and petroleum extraction.
The tandem rotor design and heavy lifting capacity make the Chinook extremely versatile as a transport or utility helicopter. The rear of the CH-47 fuselage has a wide ramp for loading troops and supplies. There are also 1-3 hooks available for carrying heavy payloads depending on the variant.
Capacity: 33-55 troops (or 24 litters with 3 attendants)
Cargo capacity: 12,700kg
Rotor diameter: 18.3m
Powerplant: 2 x Lycoming T55-GA-714A turboshaft engines
Top speed: 315km/h
Armament: Typically 7.62mm machine guns (up to 3 -- one on loading ramp and 2 at shoulder windows)