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Allison J71

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Allison J71
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The Allison J71 was a single spool turbojet engine, designed and built in the United States. It began development in 1948 as a much modified J35, originally designated J35-A-23.[1]

Quick Facts J71, Type ...
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Operational history

The Allison J71 turbojet powered the Douglas B-66 Destroyer and the McDonnell F3H-2 Demon after the failed Westinghouse J40 proved unworkable. The prototype P6M-1 SeaMasters were also fitted with the engine.

Variants

Data from: Aircraft engines of the World 1953[2]

J71-A-1
J71-A-2
Powered the McDonnell F3H Demon
J71-A-2B
J71-A-2E
9,700 lbf (43.15 kN) thrust (14,000 lbf (62.28 kN) thrust with afterburner), for the McDonnell F3H-2 Demon.
YJ71-A-3
7,000 lbf (31.14 kN) thrust (9,500 lbf (42.26 kN) thrust with afterburner)
J71-A-4
Afterburning turbojet engines for the Martin XP6M-1 Seamaster flying boat prototypes.
J71-A-6
Afterburning turbojet engines for the Martin YP6M-1 Seamaster pre-production flying boats.
J71-A-7
14,000 lbf (62.28 kN) thrust with afterburner
J71-A-9
Powered the Douglas RB-66 Destroyer
J71-A-11
10,200 lbf (45.37 kN) thrust
J71-A-13
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Specifications (Allison J71-A-2)

Data from Aircraft engines of the World 1957[3]

General characteristics

  • Type: afterburning turbojet
  • Length: 284.5 in (7,230 mm)
  • Diameter: 39.5 in (1,000 mm)
  • Frontal area: 8.5 sq ft (0.79 m2)
  • Dry weight: 4,890 lb (2,220 kg)

Components

  • Compressor: 16-stage axial compressor
  • Combustors: cannular with 10 flame tubes
  • Turbine: 3-stage axial
  • Fuel type: JP-4 / aviation kerosene
  • Oil system: pressure spray with scavenge at 10–60 psi (69–414 kPa)

Performance

See also

Related development

Related lists

References

Further reading

External links

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