Don't you think that the technology they currently use on the B-21 could and should be used on the F/A-XX to bring the cost down? That should be a top priority of the F/A-XX program in my view.
 
https://mp.weixin.qq.com/s?__biz=Mz...ecaf15be635c44154a596135d989c6b97043&scene=27
Northrop once developed a concept for the F/A-XX supersonic strike fighter featuring a double-swept wing configuration and engines analogous to the F119. To achieve a combat radius of 1,200 nautical miles (2,222 kilometres) and a maximum take-off weight approaching 100,000 pounds (45.4 tonnes), the design required a leading-edge wing sweep angle of roughly 35° to boost lift-to-drag ratio, which capped the aircraft’s top speed at approximately Mach 1.5. Evidently, the performance limits of existing low-bypass-ratio turbofan engines are insufficient to meet the operational requirements of next-generation high-performance fighter jets.
Does anyone know more details about this concept?I’m not sure whether this diagram comes from original concept or is just the author’s own theoretical deduction.
 

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Does anyone know more details about this concept?I’m not sure whether this diagram comes from original concept or is just the author’s own theoretical deduction.
The original image came from a northrop PPT slide that may or may not have had anything to do with ESAV. All the original ppt slide talked about was a parameterized auto modeling software for aircraft. The numbers you see are actually backfilled by the author (and the guy posting it is most definitely not the origin of the corrections either) because the original slide had large writing covering a lot of numbers. I wouldbt use that slide for anything because again - its purpose was to demonstrate parameterized aircraft design software.

I dug into the origin of this photo when we were trying to 3d model hypothetical F/A-XX designs.
 
Quite Hydroman. Boeing have a lot on their plate and a lot that is going wrong as you say with the KC-46 and they have already won the F-47 so that would be a mark down on that point too, having too many eggs in one basket would not work for the US military now.
Yes FighterJock, fully agree.
 
Quite Hydroman. Boeing have a lot on their plate and a lot that is going wrong as you say with the KC-46 and they have already won the F-47 so that would be a mark down on that point too, having too many eggs in one basket would not work for the US military now.
I hope they don't hose the F-47 so badly that we end up with a land-based F/A-XX as a consolation prize.
 
Don't you think that the technology they currently use on the B-21 could and should be used on the F/A-XX to bring the cost down? That should be a top priority of the F/A-XX program in my view.
I'm sure NG planning on using a variant of B-21 LO treatment to their F/A-XX for the carrier environment or possibly limited-LO with the USN's blessing, sea water environment can be brutal. Look at some of the recent F-35C videos which appear to be various areas of oxidation but I could be wrong.
 
It was believed that while Lockheed flew later than Boeing, its design was more evolutionary than Boeing.
Which I took to mean the Lockheed proposal looked a lot like the X-44.


Don't you think that the technology they currently use on the B-21 could and should be used on the F/A-XX to bring the cost down? That should be a top priority of the F/A-XX program in my view.
I suspect the reduced-maintenance stealth coatings will be used. But I'm not sure what else could transfer. The B-21 is basically little more than a B-2 with current-gen electronics, aside from the stealth coatings. It was all mature tech to keep the costs down.

So I don't know what mature tech could be stuck into a fighter, as opposed to a bomber.



Northrop once developed a concept for the F/A-XX supersonic strike fighter featuring a double-swept wing configuration and engines analogous to the F119. To achieve a combat radius of 1,200 nautical miles (2,222 kilometres) and a maximum take-off weight approaching 100,000 pounds (45.4 tonnes), the design required a leading-edge wing sweep angle of roughly 35° to boost lift-to-drag ratio, which capped the aircraft’s top speed at approximately Mach 1.5. Evidently, the performance limits of existing low-bypass-ratio turbofan engines are insufficient to meet the operational requirements of next-generation high-performance fighter jets.
That is why the Lockheed NATF and both proposals for A/F-X had swing wings.

Not going to lie, I would not be surprised if the FAXX had swing wings.
 
The original image came from a northrop PPT slide that may or may not have had anything to do with ESAV. All the original ppt slide talked about was a parameterized auto modeling software for aircraft. The numbers you see are actually backfilled by the author (and the guy posting it is most definitely not the origin of the corrections either) because the original slide had large writing covering a lot of numbers. I wouldbt use that slide for anything because again - its purpose was to demonstrate parameterized aircraft design software.

I dug into the origin of this photo when we were trying to 3d model hypothetical F/A-XX designs.
I found the slides you mentioned on the forum, yet I can’t identify any specific correlation between the diagram in the paper and this slide. Could you track down the paper or presentation slides where this diagram originally appears?
 

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Northrop once developed a concept for the F/A-XX supersonic strike fighter featuring a double-swept wing configuration and engines analogous to the F119. To achieve a combat radius of 1,200 nautical miles (2,222 kilometres) and a maximum take-off weight approaching 100,000 pounds (45.4 tonnes), the design required a leading-edge wing sweep angle of roughly 35° to boost lift-to-drag ratio, which capped the aircraft’s top speed at approximately Mach 1.5. Evidently, the performance limits of existing low-bypass-ratio turbofan engines are insufficient to meet the operational requirements of next-generation high-performance fighter jets.
The 1200 nm combat radius target and 45 tonne max takeoff weight have nothing to do with F/A-XX. We now know F/A-XX’s combat radius is a little shorter than F-47’s 1000 nm. This specific number comes from the combat radius target cited earlier as an example for Japan’s next-generation fighter jet.

Also, in my opinion, this chart locks the fuselage length to 18.9m. We’d have more design flexibility if we allow longer fuselage.
 
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The 1200 nm combat radius target and 45 tonne max takeoff weight have nothing to do with F/A-XX. We now know F/A-XX’s combat radius is a little shorter than F-47’s 1000 nm.

Are you certain of that?
 
Are you certain of that?
“probably over 125 percent of the range that we’re seeing today to give us better flexibility operational reach,” Donnelly said. “So it will definitely have longer inherent range.”
I calculated it based on 125% of the F-35C's combat radius.
 
Are you certain of that?
MTOW I am. That's set by the catapult, and the EMALS is said to be able to handle 90-100klbs depending on who is talking. France has said 45 tonnes.

But the tighter limit is landing weight. F-14s landed at 55,000lbs. 3000-5000lbs of fuel brings us down to 50-52klbs, and if you want to recover with missiles those have to come out of the landing weight as well. 4x AGM-158s + 4x AMRAAMs is right at 12,000lbs. Which brings empty weight down to 38-40klbs. Tomcats were 43.7klbs empty, RA-5Cs were ~42klbs "empty", and A-3 Skywarriors were ~40klbs. So assuming a very significant composite percentage to reduce weight, I think 40klbs empty is reasonable even for an airframe with huge internal bays. Case in point, the Su-57E is supposed to weigh 40,800lbs empty.​

And tico has given the quote for range. 125% of F-35C is right at 800nmi, and that was "A-6 w/ 4x2000lb" combat radius.
 
For Boeing, could be constipation prize?
I hope they don't hose the F-47 so badly that we end up with a land-based F/A-XX as a consolation prize.
Been doing some more reading of the F-47 related development up until now and it would appear that things are not going poorly. Some "visionary" ideas early in the program have certainly been given reality checks (and for good reason) and thats shaped what the program looks like now, which in my opinion has been taken in a more responsible direction. Of publicly known program leadership, there are some program level management that oversaw the B-21 development that is now responsible for F-47 stuff too.

I also personally feel that the culture and leadership at Boeing has been moving in a good direction, and that many of the programs that are hermmorhaging are suffering from long term consequences of prior management. Management has been very keen on employee feedback and culture change across the organization.

Again - it doesnt mean all is live and well, but despite all the misteps, I think Im hopeful that the F-47 program is going to deliver.

I will say though, I hope northrop would win F/A-XX. That way Boeing can focus on the F-47 and execute it well while fixing its problems.
 
I also personally feel that the culture and leadership at Boeing has been moving in a good direction, and that many of the programs that are hermmorhaging are suffering from long term consequences of prior management. Management has been very keen on employee feedback and culture change across the organization.
I really hope you're correct, because we cannot exactly afford for Boeing to collapse due to incompetence.



I will say though, I hope northrop would win F/A-XX. That way Boeing can focus on the F-47 and execute it well while fixing its problems.
I think purely for industrial-base reasons NG is going to get FAXX.

So that we keep 3 primes in the designing fighters business.
 
I really hope you're correct, because we cannot exactly afford for Boeing to collapse due to incompetence.

The McDonnell Aircraft Corporation corporate culture that Boeing inherited when it acquired McDonnell-Douglas and made the supremely bad mistake of allowing McD senior managers to takeover needs to be purged from Boeing.
 
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Northrop Grumman has opened a next-generation aircraft development facility equipped with 17 classified laboratories and large work buildings, in anticipation of receiving orders for the F/A-XX for the U.S. Navy.The background includes concerns from the Department of Defense regarding the simultaneous development of fighter jets for the Air Force and Navy, as well as the aim to maintain the know-how of stealth technology engineers following the B-21 development.
View: https://x.com/AWN_Japan/status/2085543346190397441?s=20


Debrief: How Northrop Grumman Is Making Its F/A-XX Closing Argument​

https://aviationweek.com/defense/ai...rop-grumman-making-its-fa-xx-closing-argument
 
My thoughts too Hydroman, I wonder what they will do for the announcement? Will they show it live on the internet like the B-21 and the F-47.
 
My thoughts too Hydroman, I wonder what they will do for the announcement? Will they show it live on the internet like the B-21 and the F-47.
I really don't know regarding this one FighterJock, maybe live or with Trump like the F-47. Since it seems the USN may have been working with NG at least around the time of the Boeing and LM NGAD demonstrator flight testing, there may be an NG F/A-XX demonstrator but of course that won't be released, we'll have to wait and see. If NG is expanding facilities, this could be an indicator that NG will win. I went to Boeing-St Louis before F-47 was announced and I asked one of our engineering hosts about the new construction and he stated very excited, "Oh that's for NGAD". At that point, I knew Boeing had won.
 
Are there any industry rumors yet like there were before the F-47 contract award?

NG expanding their Melbourne campus sounds like Boeing starting their STL facility expansion before F-47 contract award... wonder if the winner is clear by this point.
My understanding is that NG eventually wants to shift all of their engineering (and manufacturing, possibly?) to Melbourne. Haven't seen this as a publicly announced strategy, but I was told so by a higher level manager working at NG (grain of salt). but it makes sense since there have been issues with engineering/manufacturing being on the same page when they are divided between Melbourne and Palmdale. There's also precedent for them consolidating their programs in Melbourne, as they moved their entire E-2 program from Bethpage, NY to Melbourne.

With that being said, the new facility is probably a partially planned expansion to have more room for engineers, but also a gamble in the hopes that they win the contract. Ramp-up in staffing is one of the bigger concerns of the Navy/GOV given how much the B-21/F-47 absorbs the key workforce, along with other projects in the works.

Boeing's expansion in St. Louis was equally a risk, but it was also needed in order to be competitive for future contracts (including F-47).
 
They probably also have their hat in the ring across a bunch of near to medium term production programs like future CCA increments for the Navy and Air Force, and probably other unmanned systems. Having turn key engineering and production capacity helps those things beyond make their case on the Navy's fighter.
 
So what will happen to the loser of the F/A-XX once the competition is over?
Likely a protest from whoever loses, a few months of deliberation, then once it's all finalized:

Archiving of all information/data/models related to the program. Finding roles for all the staff in other programs, letting go of any you can't find spots for.

Name of the game.
 
That never happened to Lockheed when they lost the NGAD/F-47 program but I suppose that was done differently having Trump award the NGAD, no one is going to protest the presidents word.
 
My understanding is that NG eventually wants to shift all of their engineering (and manufacturing, possibly?) to Melbourne. Haven't seen this as a publicly announced strategy, but I was told so by a higher level manager working at NG (grain of salt). but it makes sense since there have been issues with engineering/manufacturing being on the same page when they are divided between Melbourne and Palmdale. There's also precedent for them consolidating their programs in Melbourne, as they moved their entire E-2 program from Bethpage, NY to Melbourne.

With that being said, the new facility is probably a partially planned expansion to have more room for engineers, but also a gamble in the hopes that they win the contract. Ramp-up in staffing is one of the bigger concerns of the Navy/GOV given how much the B-21/F-47 absorbs the key workforce, along with other projects in the works.

Boeing's expansion in St. Louis was equally a risk, but it was also needed in order to be competitive for future contracts (including F-47).
NG designed B-21 in FL. NG will keep their Palmdale facilities due to EAFB and the proximity to the southwest ranges including the Nellis AFB complex. You also have Mojave and there are "other" special programs there primarily with Scaled Composites. Companies want to leave CA and can you blame them.
 
That never happened to Lockheed when they lost the NGAD/F-47 program but I suppose that was done differently having Trump award the NGAD, no one is going to protest the presidents word.
Or maybe they just decided not to deal with that nonsense anymore and put stipulations in the contracts. "If you lose, take it like a man."
 
NG designed B-21 in FL. NG will keep their Palmdale facilities due to EAFB and the proximity to the southwest ranges including the Nellis AFB complex. You also have Mojave and there are "other" special programs there primarily with Scaled Composites. Companies want to leave CA and can you blame them.
B-21 had engineering in both locations and still does to this day. But yes you’re correct in saying they want to leave CA because it’s more expensive. That’s the rationale I was told.

That never happened to Lockheed when they lost the NGAD/F-47 program but I suppose that was done differently having Trump award the NGAD, no one is going to protest the presidents word.
Without getting too deep in the weeds, LMT didn’t protest because they simply weren’t competitive enough. Boeing absolutely would’ve protested had they ruled the other way.

In the case of F/A-XX, both will likely protest as it’s a must-win from a business perspective for both companies.
 
Without getting too deep in the weeds, LMT didn’t protest because they simply weren’t competitive enough. Boeing absolutely would’ve protested had they ruled the other way.
If true that's kind of mind-boggling. Makes one wonder if they got complacent. You'd think the YF-23 would have put the fear of God in them. (Makes me wonder what they thought the first time they saw it.)
 
If true that's kind of mind-boggling. Makes one wonder if they got complacent. You'd think the YF-23 would have put the fear of God in them. (Makes me wonder what they thought the first time they saw it.)
It’s hard to make a business case to try and go all-out for the win when you already have a massive backlog of F-35 and F-16 production for the foreseeable future. Their overall strategy (from what i gather) was to offer something evolutionary that met all the design requirements, but try to lobby the Airforce into believing that the F-35 in upgraded form (hence the “Ferrari” F-35 comments from late 2025) could be a sufficient enough replacement given cost concerns.

In short, no need to be aggressive and over-invest when you already are doing well.
 
If true that's kind of mind-boggling. Makes one wonder if they got complacent. You'd think the YF-23 would have put the fear of God in them. (Makes me wonder what they thought the first time they saw it.)
To be fair, I'd guess that failed Northrop and McDonnell bids in ATF and JSF respectively should've done the opposite.
The most radical proposals lost.

Boeing win is breaking this line, and they're yet to prove they're capable of matching their ambition with execution.
 
To be fair, I'd guess that failed Northrop and McDonnell bids in ATF and JSF respectively should've done the opposite.
The most radical proposals lost.

Boeing win is breaking this line, and they're yet to prove they're capable of matching their ambition with execution.
The Northrop/McD JSF failed because the USMC said they didn't want two types of turbofans in their jet. So Northrop/McD did it anyway. Their failure was fairly predictable. In fact the shaft-driven lift fan was the riskier move and LM was rewarded for it.
 
Whether a revolutionary or conservative design wins also depends historically on the atmosphere at the time. Look at Stealth itself. The Yom Kippur was extrapolated to a Cold War fight resulting in huge losses for conventional airpower. Against this backdrop Stealth was a risk worth taking hence the F-117 and especially the choice of Northrop's B2 over the much more conservative and tailed Lockheed design. Consider the ATF... The flyoff and selection occurred against the backdrop of the fall of the USSR and the promised "Peace Dividend". The USAF could not afford a high risk programe and overruns especially after Cheney axed the A-12. The safer bet had to be chosen. Northrop had issues with the B-2 so choosing the conservative safer design made sense even if we all prefer the YF-23. Consider now.... China is becoming enough of a threat (PL15 outranging Amraam etc) to incentivize throwing the dice and choosing the radical design....
 
Re: contractor saltiness at not being selected, also bear in mind that these selections are for the prime contractor. Whoever “loses” is still probably going to wind up doing sub-contracting work on a substantial minority of the aircraft’s components and systems. No one is going to go hungry on this deal.

The most high profile protest of a contract award I can think of in recent memory was the Bell/Sikorsky fight over the FVL contract that went to the MV-75, and I think that’s because the two designs are so different and proprietary that there wasn’t going to be any significant workshare between the two.
 
If true that's kind of mind-boggling. Makes one wonder if they got complacent. You'd think the YF-23 would have put the fear of God in them. (Makes me wonder what they thought the first time they saw it.)
I can tell you exactly what several Lockheed test pilots said, "bad ramp presence, doesn't look like a real fighter." They compared it to a butterfly tail Bonanza. I wouldn't be surprised that attitude was found elsewhere in the company.
 
I can tell you exactly what several Lockheed test pilots said, "bad ramp presence, doesn't look like a real fighter." They compared it to a butterfly tail Bonanza. I wouldn't be surprised that attitude was found elsewhere in the company.
"Bad ramp presence"? Maybe that's why the X-32 lost.
 

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