F7
Type Turbofan
National origin Japan
Manufacturer IHI Corporation
First run 2000s
Major applications Kawasaki P-1

The IHI Corporation F7 is a small turbofan engine developed specifically for the Kawasaki P-1 maritime patrol aircraft by IHI Corporation.

Development

IHI started development work on the high bypass ratio turbofan engine in 1998, based on the low bypass ratio engine XF5-1. and the first prototype XF7-1 was tested from 2000 to 2002. The flight test XF7-10's testing started in 2002.[1]

XF7-10's PFRT (Preliminary Flight Rating Test) started in second quarter 2002, and was completed August 2007 before the XP-1 first flight. PFRT was based on the Military Specification MIL-E-5007D and the original standard about the FADEC system.[2]

Take off thrust is 60 kN (13,000 lbf), bypass ratio is 8.2, and SFC is 0.34 kg/h/daN.[3] Exhaust emission is under the ICAO's standard, NOx is 54%, CO is 33%, UHC is 0.5%, smoke is 74% when standard is 100%.[4]

Strong alloy materials were selected for high corrosion resistance in salt environments, and a sound absorbing panel is mounted.[5] Noise level is 5~10dB lower than P-3's T56, measurements is 76 dB when idling, 70.6 dB at take off.[6]

P-1's F7-10 is installed thrust reversal with GE's cowl opening systems.[7]

Applications

Specifications (F7-10)

General characteristics

  • Type: Turbofan
  • Length: 2.7 m (8 ft 10 in)
  • Diameter: 1.4 m (4 ft 7 in) (Fan)
  • Dry weight: 1,240 kg (2,730 lb)

Components

  • Compressor: 1-stage fan, 2-stage low pressure compressor, 8-stage high pressure compressor axial
  • Combustors: annular
  • Turbine: 2-stage high pressure turbine, 4-stage low pressure turbine

Performance

See also

Related development

Related lists

References

  1. ↑ XF7-10 development reference paper p. 11 in TRDI Defense Technology Symposium 2007
  2. ↑ XF7-10 PFRT reference paper p5&p7 in TRDI Defense Technology Symposium 2007
  3. ↑ XF7-10 development reference paper p7
  4. ↑ XF7-10 PFRT reference paper p13
  5. ↑ XF7-10 development reference paper p8
  6. ↑ XP-1's inspection report by city council member Archived 2009-02-13 at the Wayback Machine
  7. ↑ "GE - Cowl Opening Systems". GE Aviation Systems. Retrieved 21 January 2009.
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