Rolls-Royce B.37 Derwent

The Derwent was actually two different engines. The first was a redesigned B.23 Welland with increased airflow and straight through combustion chambers. Marks I through IV were of this design reaching 2,450 lb thrust. Production began in 1944.
It was suggested a scaled down Nene engine would fit the nacelle of a Gloster Meteor. A quick calculation estimated thrust at 3,650 lb. By the end of 1945, a Meteor powered by the Derwent V set a world speed record of 606 mph.


  • Derwent 5: 3,500 lb (15.6 kN)


  • Turbojet
  • Compressor: Dual-sided centrifugal
  • Turbine: single-stage axial

used by

  • Gloster Meteor