Mitsubishi ATD-X

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Mitsubishi ATD-X

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Kažu, da:
- je zaustavljena odluka o novom F-3, nije još odlućeno o dizajnu. Verovatno posle 2018 godine.



Registruj se da bi učestvovao u diskusiji. Registrovanim korisnicima se NE prikazuju reklame unutar poruka.
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​Tokyo to conclude X-2 programme in March 2018

https://www.flightglobal.com/news/articles/tokyo-t.....18-443717/



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....
Japan Backs Out of Plan to Develop Fighter Jet on Its Own
Arrow http://www.defense-aerospace.com/article-view/rele.....ghter.html
Citat:Faced with the high cost of developing a new fighter to replace its F-2 fighters, Japan has opted to instead look for a partnership with an American aerospace company, which could well spell the end of an ongoing cooperation with Britain.
Japanci su odlućili da neće sami da razvijaju novi avion.
Citat:(EDITOR’S NOTE: The Japanese-language version of the same article says that “Japan has decided that it will seek foreign help in creating a successor for its F-2 fighter fleet and a request for information (RFI) will be sent out to U.S. aerospace companies this week,” according to the Alert 5 website.
Tražiće pomoć Amera.

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Citat:An anonymous Japanese official told Flight Global that Tokyo may resume the X-2 flight test program in future.
The stealth demonstrator had completed 34 flights before being grounded.

Arrow https://www.flightglobal.com/news/articles/tokyo-e.....et-447911/

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Northrop je zainteresovan

Exclusive: Northrop Grumman angles for role in Japanese stealth fighter program - sources

https://www.reuters.com/article/us-japan-defence-n.....ld+News%29

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Nisu prodali avion, a sada će jim dati tehnologiju. Bebee Dol

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Lockheed Gives Japan More Than 50% of New Fighter Jet Work (excerpt)

http://www.defense-aerospace.com/article-view/rele.....r-jet.html

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Odlucili su da prave novi avion za zamenu F-2

Citat:
The Ministry of Defense has decided to develop a new aircraft to succeed the F-2 fighter, as proposals from three American and British companies for a replacement failed to meet the ministry's costs and capability requirements, government officials told the Mainichi Shimbun.

The ministry plans to incorporate the project into the next five-year mid-term defense program to be drawn up at the end of the year, with an eye on a joint development program with foreign companies to lower the overall financial burden, which could reach trillions of yen. The ministry also hopes to pursue introducing main components such as the engine that incorporate Japan's own technology.

As many as 92 F-2s are owned by the Air Self-Defense Force, and will begin to reach the end of their service life in the 2030s. The quick adoption of a replacement plan is necessary as developing a fighter jet can take 10 years or more.

In response to a government call for proposals, three American and British manufacturers made offers to upgrade their existing models -- Lockheed Martin for its F-22, Boeing for its F-15, and BAE for its Eurofighter Typhoon.

However, refurbishing the stealthy, state-of-the-art F-22 is expensive, and "no clear explanation was given about the possibility of the U.S. government lifting the export ban" on the aircraft, according to a senior ministry official. The two other proposals also failed to meet the ministry's requirements.


https://mainichi.jp/english/articles/20181004/p2a/00m/0na/001000c

Zvuci konfuzno, a sta je sa F-15, cime menjas F-15 ? A kupuju F-35...

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Testiraju trup napravljen lepljenjem kompozita, hoce da eliminisu zavojke.

Citat:TOKYO—Japanese engineers, working on replacing fasteners with glue, are applying composite to combat-aircraft substructure as well as the skin.

A full-scale mid-fuselage, now under strength testing as part of the technology acquisition effort for Japan’s Future Fighter program, incorporates the arrangement. The test specimen is built up from modules in which composite skin is glued to composite frames and beams that are themselves joined to each other with adhesive.

Evaluation is not complete, but so far no major problem has arisen, says an official of the defense ministry’s Acquisition, Technology and Logistics Agency (ATLA), which is undertaking the work in partnership with Mitsubishi Heavy Industries (MHI). Testing is due to end on March 31, 2019. But the technology is difficult, says the official, suggesting more time may be needed.

In the analysis of Japanese engineers, a key factor preventing general use of composite substructure has been the intolerance of the material to mistakes in drilling, which results in a high scrap cost. But the problem almost disappears if glue is used instead: very little drilling is required.

The specimen mid-fuselage has been built to one of the concept designs that ATLA prepared for the fighter, which would be a large combat aircraft entering service in the 2030s. The government is considering alternatives to an indigenous program, including joint international development—but an aircraft developed with another country could still use know-how that Japan had accumulated in anticipation of going alone.

MHI built the mid-fuselage in fiscal 2017. It is 8.6 m (28.2 ft.) wide and 5.2 m long. This test specimen follows a smaller glued-composite structure that was previously evaluated. Thanks to the bonding technology, the mid-fuselage is a little simpler than might be expected if it had been built with the usual technology: it has fewer structural elements.

The specimen has been taken to limit load, the highest intended for flight, but not yet to ultimate load, which is 50% greater, the official says, speaking at an ATLA technology seminar.

Engineers are looking for failure in the adhesive and in material close to joints. So far they have seen none, the official said. As ATLA has previously described, the assemblies are made of elements cured separately in autoclaves and bonded under pressure.

Apart from creating the opportunity to use more composite, bonding creates a large direct saving in weight: Compared with fasteners, the glue has little mass, and the parts do not need to be thickened around holes.

ATLA estimates the structure under test weighs 10% less than it would if it had been made with fasteners and the composite-metal ratio of the MHI F-2 fighter, itself a step forward in use of lightweight materials. The agency will not say how much weight is saved within the composite alone.

The mid-fuselage still needs metal in the belly area, to absorb complex loads from the landing gear, a task for which composite is not suited. The weapon bay, also in the lower part of the mid-fuselage, also needs to be made of metal.


http://aviationweek.com/defense/glue-japan-uses-composite-fighter-substructure

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