Japanese next generation fighter study (aka i3, F-3)

Flyaway

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Can’t they just develop several variant aircraft off the same common systems backbone.
 

apparition13

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Really?! The best fighter in the world (aside of F-22) being also the cheapest is a strong stone in the camp of a diverging opinion.
Typhoon, 10 years late, way over budget, post cold war blues.
Rafale, 10 years late, way over budget, post cold war blues.
F-35 - 10 years late, way over budget. Doesn't have the 'post cold war blues' excuse.

But that's not all:

LCS Freedom: utter debacle. Order cut from 26 to 16, and now they are retiring most of them without even a decade of service because the ships are that useless. Waste of billions.
F-22 - 7 years late, way over budget.
P-7, late and over budget, cancelled.
S-3, nice plane, thanks to LTV.
L1011, great plane, late and over budget, never sold enough to make back the investment, would have bankrupted the company but for the bailout.
C-5, late and over budget, contributed to the almost bankruptcy and bailout.
SR-71, Skunk Works project, aka the anti-corporate Lockheed division. They get things done by not doing it the Lockheed way.
C-141, got this one right.
U-2, Skunk Works project.
F-104, Skunk Works design that needed bribes to be successful. The USAF bought not that many, and retired them really quickly.
P-3, Electra, P-2, C-130, Hudson, seemed to be good designs.

But...

P-38, late, over budget, poor performance. They got it right by the end of the war, but that seems to be the Lockheed way. Late, over budget, fail to meet performance goals, will sometimes get it right but it takes years too long and triple the budget to get there.

The F-2 was started with GD, but most of the development was with Lockheed after GD sold off their aircraft division. It was late, over budget, and had its order cut by a third.

The JMSDF was looking at the Freedom LCS, but noped out of there and made the Mogami instead, which is an ship that actually works. But then again, the JMSDF seems to me to be the best run military service on the planet.

Hence my position: ABL*. Anyone but Lockheed.

*I see Liverpool just 'won' the FA cup. I say 'won' because I don't really rate penalties as cup deciders.
 

Kota

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Honestly I'm glad ATLA and the MOD are giving LM the finger on this one. LM and the US congress were responsible for almost all that went wrong with the F-2. Things would've gone so much smoother if Japan was allowed to go with their domestic delta canard or the F-15J mod. Realistically, the most important thing cooperation wise with the US is networking integration and you don't need to sign a massive LM contract to achieve that. No reason to continue do business on arguably one of the most important defense contracts with a corrupt company like LM that won't treat you like an equal.
 

Maro.Kyo

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Honestly I'm glad ATLA and the MOD are giving LM the finger on this one. LM and the US congress were responsible for almost all that went wrong with the F-2. Things would've gone so much smoother if Japan was allowed to go with their domestic delta canard or the F-15J mod. Realistically, the most important thing cooperation wise with the US is networking integration and you don't need to sign a massive LM contract to achieve that. No reason to continue do business on arguably one of the most important defense contracts with a corrupt company like LM that won't treat you like an equal.
The most important aspect is if the development partner has the incentive to really commit and try their best to build a successful development program. LM doesn't, UK and as an extent their industry, has
 

datafuser

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Does this text below explain the concept shown in the attached picture?

" Unlike a conventional analog beamformer, digital processing enables multiple beams to be generated by iteratively summing a given received signal set while preserving the full gain of the array for each beam. DBF offers significant operational utility from its inherent capability to flexibly generate multiple simultaneous receive beams with arbitrary weighting schemes. Timeline occupancy demands can be potentially mitigated by transmitting over a small angular sector that can be covered by a cluster of receive beams to collect returns in parallel. "

From page 279 of Principles of Modern Radar Volume III - Radar Applications
 

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helmutkohl

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a bit more detail on why Japan switched from Lockheed to BAe

basically
- Cost problems
- Timeline problems as the retirement of old aircraft between the two countries did not match
- LockMart not willing to exchange some technology info
- concerns some components like the blackbox, is outside of Japanese control and has to be sent to the US mainland
- BAe and Mitsibushi to work on airframe, IHI and Rolls Royce to work on engines
- will continue to work with the US and LockMart for interoperability purposes
 

helmutkohl

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Does this text below explain the concept shown in the attached picture?

" Unlike a conventional analog beamformer, digital processing enables multiple beams to be generated by iteratively summing a given received signal set while preserving the full gain of the array for each beam. DBF offers significant operational utility from its inherent capability to flexibly generate multiple simultaneous receive beams with arbitrary weighting schemes. Timeline occupancy demands can be potentially mitigated by transmitting over a small angular sector that can be covered by a cluster of receive beams to collect returns in parallel. "

From page 279 of Principles of Modern Radar Volume III - Radar Applications
it says
Left image
Conventional, beam, beam scan

Right image
Our study, multiple beam, image of transmittor
 

datafuser

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Does this text below explain the concept shown in the attached picture?

" Unlike a conventional analog beamformer, digital processing enables multiple beams to be generated by iteratively summing a given received signal set while preserving the full gain of the array for each beam. DBF offers significant operational utility from its inherent capability to flexibly generate multiple simultaneous receive beams with arbitrary weighting schemes. Timeline occupancy demands can be potentially mitigated by transmitting over a small angular sector that can be covered by a cluster of receive beams to collect returns in parallel. "

From page 279 of Principles of Modern Radar Volume III - Radar Applications
it says
Left image
Conventional, beam, beam scan

Right image
Our study, multiple beam, image of transmittor

受信マルチビーム means multiple receive beams.
 

Maro.Kyo

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Does this text below explain the concept shown in the attached picture?

" Unlike a conventional analog beamformer, digital processing enables multiple beams to be generated by iteratively summing a given received signal set while preserving the full gain of the array for each beam. DBF offers significant operational utility from its inherent capability to flexibly generate multiple simultaneous receive beams with arbitrary weighting schemes. Timeline occupancy demands can be potentially mitigated by transmitting over a small angular sector that can be covered by a cluster of receive beams to collect returns in parallel. "

From page 279 of Principles of Modern Radar Volume III - Radar Applications
 

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