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
Meadowcroft Chinook be reconfigured to be towed on its main gear by a vehicle. Meadowcroft Chinook The Meadowcroft Chinook is a two-seat mid-winged American homebuilt aircraft design first flown in 1958. The Chinook was designed for maximum stability on the ground and the air with a roomy cockpit. The wing was patterned from the Ace Baby Ace homebuilt. The aircraft is a tricycle geared side-by-side seat mid-winged aircraft with a steeply raked windscreen. Each wing is braced with two small wing struts attached to the lower fuselage. The low rudder is capped with a strut braced horizontal stabilizer in a T-tail arrangement.