Rolls-Royce Conway

The Rolls- Royce Conway was the world's first turbofan engine used in aviation ( or two-stream turbofan jet engine ). The development of Rolls- Royce was co-financed by the British government and began in 1952 under the name RB.80. The first flight of the engine in 1954 with an Avro Ashton.

Compared to the previous single-flow jet engines ( turbojet ), the Conway was much quieter and more fuel-efficient. The pass ratio was 0.3 with initially very low. The first series yielded a thrust of 77.6 kN, which could be increased, however, in the course of further development to 97.8 kN.

The engine was produced in several versions for civilian and military use and was also available with reverse thrusters. The Conway was used in the Handley Page Victor, Vickers VC -10 and in some types of the Boeing 707 and the Douglas DC -8. It was one of the first jet engines with a MTBO of 10,000 hours.

The embarked with the secondary flow direction proved to be correct, and so the Conway was from the first real fan engine, the Rolls- Royce RB.178 and later displaced by the Rolls- Royce RB.211.

In the U.S. market, the Conway could not prevail against the Pratt & Whitney and thus the economic success was modest.


Conway Mk 540:

  • Weight: 2310 kg
  • Thrust: 90.6 kN
  • Pipe - annular combustion chamber with ten combustion chambers
  • Compressor: Axial compressor nine-step
  • Turbine: single-stage high pressure axial turbine and two-stage low-pressure axial turbine