CFM international engine company profiles
In February 1972 to complete the design and carry out the trial, September 1974 formally CFM international company, engine named CFM56, the head of the two engines manufactured in the two companies have developed test stand test. Test of common 11 engines, of which 5 units for the flight test of.1979 in November in the United States Boeing 707-320 first flight, then total flight 130h. At the same time the French "clipper" flight table to complete the necessary tests in November 9th.1979 CFM56-2 engine for America and France's.CFM56 airworthiness certificate from 1971 the two companies signed a cooperation agreement to take the card, deduction of 1 and a half years stopped, took a total of 7 years, the development cost of $1 billion. Since the engine was selected in March 1979 modified MacDonald Douglas DC-8 aircraft, to 1986 a total of 110 aircraft modifications (each 4).
In 1969 the French government for the international civil aviation market situation puts forward a research thrust 10t turbofan engine project, the French SNECMA company through the analysis and investigation, by the end of 1971 the United States GE company as a partner in the United States F101 machine core military turbofan engine based on the development of aircraft in 80s to meet the low fuel consumption, low noise and low pollution requirements the engine.1971 in November the two companies decided to jointly develop the 10000daN level high bypassratio engine.1
