RB.145
Rolls-Royce RB.145 turbojet engine on display at the Rolls-Royce Heritage Trust, Derby
Type	Turbojet
National origin	United Kingdom
Manufacturer	Rolls-Royce Limited
First run	April 1961
Major applications	EWR VJ 101
Developed from	Rolls-Royce RB108

The Rolls-Royce RB.145 was a British jet engine designed in the early-1960s by Rolls-Royce for use as a lightweight VTOL lift and cruise engine. Developed from the Rolls-Royce RB108 the RB.145 featured more accessories and a higher thrust rating. Six engines developed by MAN Turbo were fitted to the first prototype of the EWR VJ 101 experimental German fighter aircraft, achieving supersonic flight by July 1964.

Reheated versions of the RB.145 with a thrust of 3,650 lb (16.2 kN) were fitted to the second EWR VJ 101 with the intention of reaching Mach 1.4.^[1]

Variants

RB.145

Standard un-reheated turbojet

RB.145R

the RB.145 with reheat.

Applications

• EWR VJ 101

Specifications (RB.145R)

Data from Aircraft engines of the World 1964/65.^[2]

General characteristics

• Type: Single spool turbojet
• Length: 103.5 in (263 cm)
• Diameter: 15.5 in (39 cm) (intake diameter)
• Dry weight: 600 lb (270 kg)

Components

• Compressor: Nine-stage axial-flow
• Combustors: Annular with duplex burners
• Turbine: 2-stage axial turbine
• Fuel type: JP-1 or JP-4
• Oil system: Return system at 35 psi (2.4 bar)

Performance

• Maximum thrust:
  

Take-off, wet: 16.2 kN (3,650 lbf)

Take-off, dry: 12.2 kN (2,750 lbf)

• Specific fuel consumption:
  

Wet:2.2 lb/lbf/h (220 kg/kN/h)

Dry:1 lb/lbf/h (100 kg/kN/h)

• Oil consumption: 0.5 lb/h (0.23 kg/h)
• Thrust-to-weight ratio: 6.08