Helicopter flight controls blades collectively ("i.e.," all at the same time) and independent of their position. Therefore, if a collective input is made, all the blades change equally, and as a result, the helicopter increases or decreases its total lift derived from the rotor. In level flight this would cause a climb or descent, while with the helicopter pitched forward an increase in total lift would produce an acceleration together with a given amount of ascent. The collective pitch control in a Boeing CH-47 Chinook is called a "thrust control", but serves the same purpose, except that it controls two rotor systems, applying
Billy Chinook He was one of three elected Chiefs of the Wasco Nation, representing the Dalles Wasco. He was a signatory to the treaty that established the Warm Springs Reservation. Chinook lost his land claim at Mill Creek in 1856 and removed to the Warm Springs Reservation. Chinook enlisted as Acting First Sergeant in Captain John Darragh's Company of 50 U.S. Army Indian Scouts in 1866 for a term of 1 year during the Snake War. First Sergeant Chinook participated in the first battle of the war in present-day Crook County, Oregon. In 1866 Chief Paulina, his half-brother Chief Wahveveh and a