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1
Aerospace / Re: T-X - A Future USAF Trainer
« Last post by LowObservable on Today at 05:58:57 pm »
So has ROK pitched the F/A-50 against Gripen?

When that happens... As it is, there are no grounds for a comparison. And AAFK (as any fule kno) a complete package can't be compared to flyaway.
2
Aerospace / Re: T-X - A Future USAF Trainer
« Last post by sferrin on Today at 05:10:41 pm »
So, Gripen and FA-50 cost basically the same.

I sincerely doubt that.

 
(I'm discounting the higher end of the Gripen range because when you see that big a variation it suggests that the higher number includes stuff like training, spares, and maintenance, not just a bare aircraft.)

Well, no.  When you do that you get a MUCH higher price.  Try $125 million a pop.

http://www.ibtimes.com/brazilians-arent-happy-about-45-billion-purchase-saab-gripen-fighter-jets-1514618


Even this puts it at $44 million (Gripen C), and that was 5 years ago:

https://defenseissues.net/2013/10/05/modern-aircraft-flyaway-costs/

(Note: neither Rafale or Gripen prices include VAT; with VAT, costs are 100 million USD Rafale M, 90 million USD Rafale C, 100 million USD Gripen E, 53 million USD Gripen C, 43 million USD Gripen A)

3
Aerospace / Re: Chengdu J-20 news, pictures, analysis Part III
« Last post by Blitzo on Today at 04:20:55 pm »
Re. the Indians' claimed detection of the J-20 . . . could the circumstances be similar to this ?

http://uk.businessinsider.com/strange-notches-on-f-35-raise-questions-over-first-combat-with-israel-2018-5?r=US&IR=T


"F-35s deployed abroad usually feature their typical four radar reflectors: to exaggerate their real RCS (Radar Cross Section) and negate the enemy the ability to collect any detail about their LO “signature”. As happened during the short mission to Estonia and then Bulgaria, carried out by the USAF F-35As involved in the type’s first overseas training deployment to Europe or when, on Aug. 30, 2017, four U.S. Marine Corps F-35B Lightning II joined two USAF B-1B Lancers for the JSF’s first show of force against North Korea: the F-35Bs flew with the radar reflectors, a sign they didn’t want their actual radar signature to be exposed to any intelligence gathering sensor in the area."

cheers,
          Robin.

Yeah, luneberg lenses have been mentioned a few times and most photos of J-20 flying shows it with a luneberg lens.


Of course the question that's been raised a few times is whether the IAF would be able to tell the J-20 had a luneberg lens aboard... one would certainly hope so.
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Aerospace / Re: T-X - A Future USAF Trainer
« Last post by TomS on Today at 04:12:11 pm »
So, Gripen and FA-50 cost basically the same.  (I'm discounting the higher end of the Gripen range because when you see that big a variation it suggests that the higher number includes stuff like training, spares, and maintenance, not just a bare aircraft.)

Source would be nice to see what those footnotes are.
5
Military / Re: Nuclear Weapons NEWS ONLY
« Last post by sferrin on Today at 03:40:33 pm »
Video of the quadruple Bulava launch.



More info: http://russianforces.org/blog/2018/05/four-missile_salvo_launch_of_b.shtml

See post three posts before yours.
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Aerospace / Re: T-X - A Future USAF Trainer
« Last post by sferrin on Today at 03:39:40 pm »
Well the T-X would certainly be cheaper. 

Why?

T-50
Unit cost    
T-50: US$21 million (2008)[3]
TA-50: US$25 million (2011)[4]
FA-50: US$30 million (2012)[5]

Gripen
Unit cost    
US$ 30–60 million for JAS 39C[3][4][5][6]
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Aerospace / Re: T-X - A Future USAF Trainer
« Last post by kcran567 on Today at 03:18:03 pm »
...

Nice! Wins the contest on looks alone in my opinion. Hope it has some life after TX.

Did you sneak in disguised as a mechanic? :D Just kidding.

looks like ejection seats removed?
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Aerospace / Re: Chengdu J-20 news, pictures, analysis Part III
« Last post by robunos on Today at 03:09:41 pm »
Re. the Indians' claimed detection of the J-20 . . . could the circumstances be similar to this ?

http://uk.businessinsider.com/strange-notches-on-f-35-raise-questions-over-first-combat-with-israel-2018-5?r=US&IR=T


"F-35s deployed abroad usually feature their typical four radar reflectors: to exaggerate their real RCS (Radar Cross Section) and negate the enemy the ability to collect any detail about their LO “signature”. As happened during the short mission to Estonia and then Bulgaria, carried out by the USAF F-35As involved in the type’s first overseas training deployment to Europe or when, on Aug. 30, 2017, four U.S. Marine Corps F-35B Lightning II joined two USAF B-1B Lancers for the JSF’s first show of force against North Korea: the F-35Bs flew with the radar reflectors, a sign they didn’t want their actual radar signature to be exposed to any intelligence gathering sensor in the area."

cheers,
          Robin.
9
Aerospace / Re: T-X - A Future USAF Trainer
« Last post by TomS on Today at 02:21:25 pm »
Gorgeous.  Looks quite small compared to the continuing T-X candidates, I think.
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Aerospace / Re: Chengdu J-20 news, pictures, analysis Part III
« Last post by latenlazy on Today at 02:05:15 pm »
There’s nothing magical or secret about the science of stealth, nor is there only one way to do stealth.
Really? It would be interesting to hear the other ways you can achieve stealth without resorting to tried and proven methods. For example the J-20 has chosen to go their own way by using anhedral in their design of canards where the Russian Su57 also uses canards but uses movable Leading Edge Root eXtensions(LERX), which are considered much more stealthy. Many consider the Su-57 more stealthy because of the way the canards are integrated into the plane of the LERX. Perhaps the design of the J-20 canards was a compromise the Chinese chose to live with. Like the round engines nozzles of the J-20.
Does the B2 achieve VLO the same way as the F-117? Does the F-22 achieve VLO the same way as the B-2? So yes, really. There are multiple different techniques used to achieve VLO. Sometimes they’re used in conjunction and in different combinations for different designs.

You can’t cherry pick individual features to make judgments about RCS. The whole airframe must be gauged as a cohesive system. The F-22 has large corner reflectors at its inlets from boundary layer diverters that the J-20 doesn’t have. Does that make it less stealthy than the J-20?
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