What is rolls royce spey?

The Rolls Royce Spey is a family of turbofan jet engines designed and built by Rolls Royce. Initially developed in the 1950s as a military jet engine, the Spey was later adapted for commercial use and found success as a passenger aircraft engine.

The Spey engine family includes several models, including the Spey 511, 512, 555, 570 and 807. Each model varies in size and power output, with the largest Spey engines being capable of producing up to 18,000 pounds of thrust.

One of the most notable uses of the Rolls Royce Spey engine was in the British Aerospace 146, a popular regional jet airliner. The Spey-powered version of the BAe 146, known as the 146-200, was well-regarded for its performance and reliability, and was operated by numerous airlines around the world.

The Rolls Royce Spey engine also saw widespread use in military aircraft, including the British F-4 Phantom II, the Argentine Navy's A-4Q Skyhawk, and the Royal Saudi Air Force's F-15 Eagle.

Today, many Rolls Royce Spey engines are still in service in both commercial and military aircraft, and the engine family is considered to be a classic example of Rolls Royce's long history of innovation in jet engine technology.