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
Mil Moscow Helicopter Plant Series production facilities for Mil-designed helicopters include Rostvertol in Rostov-na-Donu, the Kazan Helicopter Production Association, and the Ulan-Ude Aviation Plant. Mil participates in the Euromil joint venture with Eurocopter. Mil was established in 1947 under the guidance of Mikhail Mil as the helicopter laboratory of the Central Aerohydrodynamic Institute in Zhukovsky, Moscow Oblast. The Mil Mi-1 became the first mass-produced Soviet helicopter. The Mi-8 helicopter, designed in the early 1960s, was a successful design in both military and civil applications, with over 12,000 units being produced. Mil merged with Kamov and Rostvertol to form Russian Helicopters in 2006. The Mil