de Havilland Goblin
Description

The de Havilland Goblin, originally the Halford H-1, is an early turbojet engine designed by Frank Halford. The Goblin built by de Havilland was the second British jet engine to fly, and the first to pass type tests and receive a "Gas Turbine" class type rating.

The Goblin was the primary engine of the de Havilland Vampire, and was to have been the engine for the F-80 Shooting Star (as the Allis-Chalmers J36) before that design switched engines due to production delays. The Goblin also powered the Saab 21R, Fiat G.80 and de Havilland Swallow. The Goblin was later expanded into the larger de Havilland Ghost, with the model numbers continuing from the last marks of the Goblin.

General characteristics

  • Type: Turbojet
  • Length: 107 in (2,718 mm)
  • Diameter: 50 in (1,270 mm)
  • Dry weight: 1,550 lb (703 kg)

Performance

  • Maximum thrust: 3,000 lbf (13.34 kN) at 10,200 rpm at sea level
  • Overall pressure ratio: 3.3:1
  • Turbine inlet temperature: 1,472 °F (800 °C)
  • Fuel consumption: 3,720 lb/hr (465 imp.gal/hr), (1,687 kg/hr) or (2,114 l/hr)
  • Specific fuel consumption: 1.18 lb/lbf/hr (120.285 kg/kW/hr)

Components

  • Compressor: Single sided, centrifugal flow
  • Combustors: 16 chambers
  • Turbine: Single stage axial flow
  • Fuel type: Kerosene (R.D.E. / F / KER)
  • Oil system: metered pressure spray at 50 psi (344.7 kPa) dry sump, 40 S.U. secs (13 cs) (Intavia 620) grade oil