Not wishing to snub anyone as my knowledge of turbines is still very limited, I've posted some details.
General Electric T58/
de Havilland Gnome
In 1953 the U.S. Navy asked for a helicopter turboshaft to weigh 400 lbs and deliver 800 hp. GE's prototype T58 first ran in 1955 weighing 250 lbs and delivered 1,050 hp. Two T58s powered the first jet helicopter in the U.S., a modified HSS-1, in 1957. In 1959, the civil CT58 was the first jet helicopter engine certified by the FAA.
Production ended in 1984 but not before the T58 became the basis for the LM100 gas generator and was license built by de Havilland (now Rolls-Royce) as the Gnome, Alfa Romeo and IHI.
Although the engine is basically the same the fuel system and PT governor is very different on the Gnome version.
Thanks for showing interest in this topic.
Last edited by Jetmotorcycle; 28th February 2006 at 07:21.