Rolls-Royce began development of the RB.53 Dart in 1946. A turboprop engine, the Dart first flew in a Lancaster engine test aircraft in 1947. Production began in 1952 for the Viscount.
Over 7,000 engines were produced before the Dart went out of production in the late 1990s.

models

• Dart RDa.7/1 Mk 525: 2,100 hp (1566 kW)
• Dart Mk 536-7R: 2,320 hp (1730 kW)

specifications

• Turboprop
• Compressor: 2-stage centrifugal
• Turbine: 3-stage axial
• Mass flow: 21.5 lbs/sec
• Pressure ratio: 5.4

used by

• Convair 600/640
• Fokker F-27
• Vickers Viscount