Rolls-Royce RB.50 Trent




The Trent was based on a concept provided by Sir Frank Whittle and was essentially a Derwent Mark II turbojet engine with an additional turbine stage driving a reduction gearbox (designed by A A Rubbra) connected to a five-bladed Rotol propeller. Experimental work with the Trent (RB.50) actually dated back to May 1944, when a WelIand was equipped with a spur-type reduction gear and tested for shaft horsepower. First run in June 1944, the Trent ran for 633 hours on test before being installed in a Gloster Meteor  (Trent Meteor) jet fighter which flew for the first time on 20 September 1945 at the start of a programme comprising 298 hours of flight tests.

The Rolls-Royce RB.50 Trent was the first Rolls-Royce turboprop engine.




Type: Turboprop
Dry weight: 1,000lb turbine unit, reduction gear 250lb, propeller 250lb, total engine/propeller weight 1,500lb
Compressor: 1-stage double-sided centrifugal compressor
Combustors: 10 x can combustion chambers
Turbine: Single-stage axial
Fuel type: Kerosene (R.D.E.F./F/KER)
Oil system: pressure feed, dry sump with scavenge, cooling and filtration, oil grade 150 S.U. secs (32 cs) (Intavia 7106) at 38 °C (100 °F)
Maximum power output: 750 shp, with 1,250 lb (570 kg) residual thrust