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
Chinook Observer Chinook Observer The Chinook Observer is a weekly newspaper serving the Long Beach Peninsula of Washington state. It is named after Chinook, Washington, where the paper was founded in 1900 by George Hibbert and Frank Gaither. Hibbert sold the paper to John and Margaret Durkee in about 1923, who sold it to Bill Clancey in 1933, adding James O'Neil as a co-owner in 1937. O'Neil moved the paper to Long Beach, Washington in 1938. The paper was purchased by Craig and Geri Dennis in 1984, then purchased in 1988 by the East Oregonian Publishing Company, now called the EO Media