Helicopter rotor of gravity fore-aft. However, it requires the expense of two large rotors rather than the more common one large main rotor and a much smaller tail rotor. The Boeing CH-47 Chinook is the most common tandem rotor helicopter. Coaxial rotors are a pair of rotors mounted one above the other on the same shaft and turning in opposite directions. The advantage of the coaxial rotor is that, in forward flight, the lift provided by the advancing halves of each rotor compensates for the retreating half of the other, eliminating one of the key effects of dissymmetry of lift: retreating blade
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