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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.〔(XF7-10 development reference paper ) p. 11 in TRDI Defense Technology Symposium 2007〕 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.〔(XF7-10 PFRT reference paper ) p5&p7 in TRDI Defense Technology Symposium 2007〕 Take off thrust is , bypass ratio is 8.2, and SFC is 0.34 kg/h/daN.〔XF7-10 development reference paper p7〕 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%.〔XF7-10 PFRT reference paper p13〕 Strong alloy materials were selected for high corrosion resistance in salt environments, and a sound absorbing panel is mounted.〔XF7-10 development reference paper p8〕 Noise level is 5~10dB lower than P-3's T56, measurements is 76 dB when idling, 70.6 dB at take off.〔(XP-1's inspection report by city council member )〕 P-1's F7-10 is installed thrust reversal with GE's cowl opening systems.〔(【引用サイトリンク】 title=GE - Cowl Opening Systems )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「IHI Corporation F7」の詳細全文を読む スポンサード リンク
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