The General Electric GE4 turbojet engine was designed in the late 1960s as the powerplant for the Boeing 2707 supersonic transport. [1][2] The GE4 was a nine-stage, single-shaft, axial-flow turbojet based largely on the General Electric YJ93 which powered the …

In the 1960s, the United States began developing a supersonic transport (SST), the Boeing 2707. General Electric’s GE4 was intended to power the 300-seat airliner to a speed of Mach 2.7. …

General Electric’s GE4 was intended to power the 300-seat airliner to a speed of Mach 2.7. Based on previous military engines, the GE4 was the largest straight turbojet engine ever built.

The Evolution Series is a line of diesel locomotives built by GE Transportation Systems (now owned by Wabtec), initially designed to meet the U.S. EPA's Tier 2 locomotive emissions standards that took effect in 2005.

The Rhaetian Railway Ge 4/4 II is a class of metre gauge Bo′Bo′ electric locomotives operated by the Rhaetian Railway (RhB), which is the main railway network in the Canton of Graubünden, Switzerland.

The GE4 was a nine-stage, single-shaft, axial-flow turbojet based largely on the General Electric YJ93 which powered the North American XB-70 bomber. The GE4 was the most powerful engine of its era, producing 50,000 lbf (220 kN) dry, and 65,000 lbf (290 kN) with afterburner.

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This engine, a J31-GE-4, was a Navy version of the engine used in the Ryan FR-1 aircraft. It was similar to the -5 and -7 Air Force versions, except for the elimination and relocation of some accessories, and the rearrangement of engine supports.

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General Electric’s GE4 was intended to power the 300-seat airliner to a speed of Mach 2.7. Based on previous military engines, the GE4 was the largest straight turbojet engine ever built.