Boeing CH-47 Chinook the CH-47 have been developed since the helicopter entered service. The U.S. Army's first major design leap was the now-common CH-47D, which entered service in 1982. Improvements from the CH-47C included upgraded engines, composite rotor blades, a redesigned cockpit to reduce pilot workload, improved and redundant electrical systems, an advanced flight control system, and improved avionics. The latest mainstream generation is the CH-47F, which features several major upgrades to reduce maintenance, digitized flight controls, and is powered by two 4,733-horsepower Honeywell engines. A commercial model of the Chinook, the Boeing-Vertol Model 234, is used worldwide for logging, construction, fighting forest
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