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This engine finally emerged as the famed General Electric J47, which saw great demand for several military aircraft; a second manufacturing facility near Cincinnati was opened.

J47 production ran to 30,000 engines by the time the lines closed down in 1956.

The success of the CFM led GE to join in several similar partnerships, including Garrett Ai Research for the CFE CFE738, Pratt & Whitney on the Engine Alliance GP7000, and, more recently, Honda for the GE Honda Aero Engines small turbofan project.

GE also continued development of their own lines, introducing new civilian models like the GE90, and military designs like the General Electric F110.

GE was a world leader in this technology; most other firms concentrated on the mechanically simpler supercharger driven by the engine itself, while GE had spent considerable effort developing the exhaust driven turbo system that offered higher performance.

Only two weeks before this was to happen, in March 1979, several companies selected the CFM56 to re-engine their existing Douglas DC-8 fleets.A production license was arranged in September, and several of the existing W.1 test engines shipped to the US for study, where they were converted to US manufacture as the I-A.GE quickly started production of improved versions; the I-16 was produced in limited numbers starting in 1942, and the much more powerful I-40 followed in 1944, which went on to power the first US combat-capable jet fighters, the P-80 Shooting Star.GE was repeatedly unable to deliver enough engines for Army and Navy demand, and production of the I-40 (now known as the J33) was also handed to Allison Engines in 1944.After the war ended, the Army canceled its orders for GE-built J33s and turned the entire production over to Allison, These changes in fortune led to debate within the company about carrying on in the aircraft engine market.However, the engineers at Lynn pressed ahead with development of a new engine, the TG-180, which was designated J35 by the US military.Development funds were allotted in 1946 for a more powerful version of the same design, the TG-190.This led to a civilian model, the CF6, which was offered for the Lockheed L-1011 and Mc Donnell Douglas DC-10 projects.Although Lockheed later changed their engine to the Rolls-Royce RB211, the DC-10 continued with the CF6, and this success led to widespread sales on many large aircraft including the Boeing 747.In 1974 GE entered into an agreement with Snecma of France, forming CFM International to jointly produce a new mid-sized turbofan, which emerged as the CFM56.A 50/50 joint partnership was formed with a new plant in Evendale, OH to produce the design.