Kawasaki P-1
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| XP-1 (P-X) | |
|---|---|
| Type | ASW/ASuW |
| Manufacturer | Kawasaki |
| Maiden flight | September 28, 2007 |
| Status | Under development/ pre-production |
| Primary user | Japan Maritime Self-Defense Force |
The Kawasaki XP-1 (previously P-X) is a Japanese aircraft design intended as a replacement for the P-3C maritime patrol aircraft operated by the Japan Maritime Self-Defense Force.
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[edit] Development
With the P-3C aircraft in service for twenty years, the JMSDF was starting to look for a replacement for its maritime patrol aircraft. Lockheed and the USN had been working on the Lockheed P-7 to replace its own P-3's, but the program had been cancelled. Since other similar aircraft (such as the Tupolev Tu-142 or Nimrod) did not qualify the JMSDF's requirements, they decided to develop its own aircraft.
The project was intended to share many design components with the Kawasaki C-X, another local design to replace the C-1 and C-130H cargo aircraft. However, due to the very different roles of the two aircraft, only minimal similarities have been achieved. The merit rather lies in the sharing of development resources, allowing a large reduction in development costs (the total development cost for the P-X AND C-X combined is lower than the P-8 Poseidon).[citation needed] Total development costs included C-X are 345 billion Yen ($3 billion) at 2007.
GlobalSecurity.org says the JMSDF plans to procure 80 P-X aircraft.
[edit] Design
Like the Nimrod or Viking, the P-X is a turbofan ASW aircraft. The P-X will be powered by four small turbofan engines, the Ishikawajima-Harima Heavy Industries F7-10 in development, mounted under the low-set wings.
Development team said "One project two output" when project start. P-X and C-X's design were individual at first , after common shared components were decided from these individual design.[1] Common shared components with C-X are cockpit windows, outer wing, and horizon tail wing. Other 70 percent inside shared parts are APU, cockpit panel, flight control system computer, anti collision light, gear control unit, and other. Development costs decreased about 25 billion yen ($218 million) by shared, unit costs and operation costs expect to be lower.
The P-X will also have an A.I. system to assist TACCO operation. Similar to the SH-60K, an advanced combat direction system which will show the TACCO operater the best flight course to attack a submarine will be onboard.[2]
Fly-by-light will be an important feature which decreases electro-magnetic disturbances to the sensors than fly-by-wire. This will increase the search capability of the P-X. The P-X will be the first production aircraft to be equipped with such a flight control system.
Sensors on the P-X will be used to detect submarines and small vessels, such as phased array radar, magnetic anomaly detector, and Infrared/Light detection systems. The aircraft will share operational capabilities with the P-8, with some sensors being the same ones (i.e. CAE designed MAD system). [3]
The P-X will have a bomb bay to carry anti-submarine weapons, as well as eight pylons[4] to carry ASMs or bombs.[5]
[edit] Engine
TRDI and IHI started hi bypass ratio turbofan engine's development work from 1998, first prototype XF7-1' test from 2000 to 2002. XF7-1 is based low bypass ratio engine XF5-1. For flight test type, XF7-10's test started from 2002.[6]
XF7-10's PFRT (Preliminary Flight Rating Test) started from 2002 autmn, and completed 2007 august before XP-1 first flight. PFRT was based MIL-E-5007D and original standard about FADEC system.[7]
Take off thrust is 60kN(6,100kg/13,500lbs), bypass ratio is 8.2, and SFC is 0.34 kg/hr/daN.[8] Exhaust emission is under ICAO's standard, NOx is 54%, CO is 33%, UHC is 0.5%, smoke is 74% when standard is 100%.[9]
Material ware selected strong alloys with salt damage, and mounted absorbing sound panel.[10] Noise level is 5~10dB lower than P-3's T56, measurements is 76dB when idling, 70.6dB when take off.[11]
P-1's F7-10 is installed thurst reversal with GE's cowl opening systems.[12]
[edit] Operational history
A test article airframe has been delivered to the Japanese Defence Agency for static load testing with deliveries slated for 2010.
On August 31, 2007 the Ministry of Defense revealed that they will procure four production airframes. The request in the Heisei20 (FY2008) budget is 67.9 billion YEN, or about 566 million US dollars. This will make the unit price for each aircraft at $141.5 million[13].
The P-1's first flight took place in Gifu Air Base in Japan on September 28, 2007. The flight took about one hour, and ended successfully. According to the test pilot, the aircraft was very stable, and the aircraft and engines performed very well.[14] The P-X was redesignated as XP-1 at this time.
[edit] Specifications
General characteristics
- Crew: Flight:2 Mission:(N/A)
- Length: 38.0 m (124 ft 8 in)
- Wingspan: 35.4 m (114 ft 8 in)
- Height: 12.1 m (39 ft 4 in)
- Powerplant: 4× IHI F7-10, 13,500 lbs (60 kN) each
Performance
- Cruise speed: 833 km/h (450 knots, 516 mph)
- Range: 8,000 km (4,320 nm, 4,970 mi)
- Service ceiling 44,200 ft (13,520 m)
Armament
- Bombs: 20,000+ lb (9,000+ kg)
- Missiles: AGM-84 Harpoon, ASM-1C, AGM-65 Maverick
- Sonobuoys: 30+ Pre-loaded, 70+ Deployable from inside
- Other: MK-46 and Type 97 and new(GRX-5) torpedoes, mines, depth charges
Avionics
- Radar Toshiba Active Electronically Scanned Array radar system
- Sound NEC Multistatic sound navigation system
- ASW SHINKO ELECTRIC CO.,LTD. Advanced combat direction system
- Other Mitsubishi Electric Countermeasure system (CMD,RWR,MWS,ESM)
[edit] References
- ^ P-1&C-X development reference paperp4-p6 in TRDI Defense Technology Symposium 2007
- ^ P-1&C-X project reference paperp13 in TRDI Defense Technology Symposium 2007
- ^ News about CAE's MAD selected
- ^ P-1&C-X development reference paper p12-p13
- ^ Policy assessment's outline paper about P-1's production
- ^ XF7-10 development reference paper p11 in TRDI Defense Technology Symposium 2007
- ^ XF7-10 PFRT reference paper p5&p7 in TRDI Defense Technology Symposium 2007
- ^ XF7-10 development reference paper p7
- ^ XF7-10 PFRT reference paper p13
- ^ XF7-10 development reference paper p8
- ^ XP-1's inspection report by city council member
- ^ GE Cowl Opening Systems
- ^ Policy assessment's reference paper about P-1's production
- ^ TRDI topics
[edit] External links
- Technical Research and Development Institute, Ministry of Defense (Japanese)
- TRDI Topics(Japanese)
- Reference of TRDI Defense Technology Symposium 2007(P-1&F7-10's data is S2&G7)
- Policy assessments database at H19(P-1's data is No1)
- Policy assessments database at H13(P-1's data is No15)
- Asagumo graph(Japanese)
- KHI (Kawasaki) P-X Project in CASR
[edit] See also
Related development
Comparable aircraft
Related lists
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