The Boeing-Vertol CH-47 Chinook is a versatile, twin-engine, tandem rotor heavy-lift helicopter. Its top speed of 170 knots (196 mph, 315 km/h) was faster than utility and attack helicopters of the 1960s and even many of today. Its primary roles include troop movement, artillery emplacement and battlefield resupply. It has a wide loading ramp at the rear of the fuselage and three external-cargo hooks.
The Chinook was designed and initially produced by Boeing Vertol in the early 1960s. The helicopter is now produced by Boeing Integrated Defense Systems. Chinooks have been sold to 16 nations; the largest users are the U.S. Army and the Royal Air Force, see Boeing Chinook (UK variants).
One of the advantages of going to Donna Nook on a Thursday is that the RAF will give you a free air show of some sort, today we had this Chinook flying around.
Canon 5D Mk2