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 (newspaper) Guru Maharaj Ji, who visited Denver and established a mission there in late 1971. Contributors to "Chinook" included Chip Berlet. Chinook (newspaper) Chinook was a counterculture underground newspaper published weekly in Denver, Colorado from Aug. 21, 1969 to Jan. 21, 1972. It was a member of the Underground Press Syndicate. A total of 117 issues were printed. In 1972 it merged with "Boulder" magazine to become "The Straight Creek Journal", which considered itself an alternative press rather than an underground press publication, publishing weekly from Feb. 10, 1972 to Aug. 7, 1980. According to Abe Peck in his memoir "Uncovering