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Amiga500

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  • in reply to: PAK-FA Saga Episode 13 #2394662
    Amiga500
    Participant

    A focus solely on manoeuverability was found to be obsolete in WW2, when it was realised that ‘zoom & boom’ could defeat it. Russian designers were (& are) as aware of that as everyone else.

    Only if the circumstances of the fight could be chosen by the zoomer & boomer.

    It was observed how well that worked in Korea and Vietnam… as well as the Battle of Britain (to name one WW2 instance of zoom&boom being a fallacy).

    Amiga500
    Participant

    First of all I didn’t see anything in that paper talking about countering LO/VLO targets

    “First of all” do you expect a complete solution on a f__king plate?

    Use your brain to make the connections, thats what it is there for.

    Secondly, you keep repeating the falsehood that the F-35 isn’t survivable due to its lack of manueverability. It’s more agile than F-16s/F-18s, and has better acceleration.

    “Secondly” Have I mentioned the F-16 or F-18 in this thread? :confused:

    404PostNotFound….

    Amiga500
    Participant

    heck does it really matter if the article doesnt support his view ?

    Article? What “article”?

    You could probably do with opening the damn pdf before drawing your own conclusions.

    Not that that would stop you drawing completely the wrong conclusions right enough. :rolleyes:

    Amiga500
    Participant

    I’m not following your logic.

    Proof of concept. Nothing more, nothing less.

    It demonstrates the back end of radars will be seeing massive improvements in the coming years. Far beyond any linear relationship related to Moore’s law.

    Improved signal processing improves the ability to pick out targets amongst clutter from high powered sets, and the ability to localise targets using longer wavelength radars.

    in reply to: Rafale v Typhoon and the F22… #2400945
    Amiga500
    Participant

    Not necessarily- having controllability at high AoA, can contribute to the care free handling qualities that a plane exhibits.

    Quite irrelevant for a good pilot in real air combat. If a pilot pulls to an AoA of over 20deg, they are desperate, and are willing to sacrifice alot of energy for an increase in turn rate.

    That usually means they are in the midst of avoiding one missile, and a second will be up their backside shortly…. and they’ll have nothing in reserve to avoid it.

    Energy rules.

    in reply to: Rafale v Typhoon and the F22… #2401467
    Amiga500
    Participant

    Who cares about ultimate AoA?

    The things to look at are:

    Maximum sustained turn rate with altitude as well as the speed at that rate.
    Sustained roll rate.
    Roll response.
    Pitch response.
    Throttle response (acceleration).

    Talking about max AoA as a real barometer of aircraft performance is about as useful as two gays arguing over who has the bigger d_ck. Pointless as it is very unlikely in either case that the subject of argument is ever going to be useful.

    in reply to: PAK-FA Saga Episode 13 #2401492
    Amiga500
    Participant

    What evidence do you have to counter his claim?

    I remember this happened a few years back:

    http://www.xbitlabs.com/news/other/display/20061110024507.html

    Advanced Micro Devices, the world’s second largest maker of x86 chips, will sell its chip manufacturing equipment to a Russian maker of various chips, who will then produce microprocessors for the country’s government and military needs, the company’s Moscow office said Thursday.

    According to local reports, AMD will sell Zelenograd, Russia-based Angstrem company its 130nm manufacturing equipment from the Fab 30 in Dresden, Germany. Up to the recent past, Advanced Micro Devices produced 30 thousand of 200mm wafers per month, whereas Angstrem reportedly hopes to manufacture 12 million chips per year with at least some of them targeted at international markets, whereas the rest aimed at governmental and military needs.

    While current CPU industry standard is 45nm moving to 32nm… the chips within the F-22 or F-35 will definitely be no better that 130nm.

    There are also good reasons for keeping the on-board electronics larger, an example being to protect against burn out.

    They have the fabrication process. I would assume they also have the architect designers.

    in reply to: The PAK-FA saga Episode 12.0 #2411674
    Amiga500
    Participant

    Light is coming from upper right, not lower left. 😉

    Which just means the heads are sunk.

    Not quite as bad as protruding – but not as desireable as flush either.

    BTW – there is definitely more than 1 light source in that picture, but I accept the vast majority is right to left.

    in reply to: The PAK-FA saga Episode 12.0 #2412839
    Amiga500
    Participant

    There are no protruding rivet heads in picture one. (The closeup of the AOA sensor on the F-35).

    There is quite clearly a horizontal line of protruding rivets at the bottom of the 1st picture. The shadows from the cross lighting shows the rivet head above the surface with crystal clarity.

    in reply to: The PAK-FA saga Episode 12.0 #2413549
    Amiga500
    Participant

    Compare this:
    http://www.codeonemagazine.com/archives/2006/articles/oct_06/f35_detail/images/f35_detail_05.jpg

    http://www.aircraftresourcecenter.com/AWA1/101-200/walk183_YF-22/images_Jeff_Keip/84Under%20Engine1.jpg

    With this:
    http://i41.tinypic.com/166giux.jpg

    I don’t quite know what you are trying to show here… but the panel gaps in the first photo are horrendous, as are the protruding rivet heads. The second photo looks good, but you’ll notice that the design was specifically goaled to avoid having close fitting panels. For the third, yes, a few gaps here and there, as would be expected on a prototype, but good flushness of the countersunk rivet heads and overall mostly tight fitting panels.

    From an aerodynamic perspective, 3 is the best, then 2, then 1.

    Radar… unknown… but that’ll be as much about materials.

    One thing I do notice, in picture 3, all of the panel corners have distinct fillets. I am under the impression this would not be good for RCS… but then again, this is a prototype.

    in reply to: Russian UAC Ilyushin Il-96/Il-98 KC-X Tanker Bid #2419326
    Amiga500
    Participant

    Kirkland isn’t going down without a fight

    http://www.defensenews.com/story.php?i=4549138&c=AIR&s=TOP

    Maybe he was the target of an elaborate scam where they were planning to have him put up a large sum of money, but Kirkland went public, blowing up the scheme?

    (being as generous to Kirkland as I can here . . .)

    Dearest Sir,

    You have been selected as the chief negotiator in a prime aerospace contract worth several billion pounds, of which you can expect to take 10%.

    However, before carrying out negotiations we need to check your financial state to ensure you are a solvent partner for our enterprise. We will also need an upfront payment of $5 million to cover our costs of investigating your finances.

    Please provide your full bank details, and we will contact you regarding our exciting proposal immediately.

    Yours sincerely.

    Mr Putin

    in reply to: The PAK-FA saga Episode 12.0 #2419340
    Amiga500
    Participant

    “Best” doesn’t always mean the same thing for everybody.

    Quantity has a quality all of its own eh? 😉

    (I would not expect PAK-FA to have the same RCS as F-22 – I expect the Russians will have looked at it and said “an RCS low enough so we’ll be detected by IRST before or at the same distance as radar” – a much more pragmatic approach – but not necessarily as effective dependant on future developments)

    in reply to: The PAK-FA saga Episode 12.0 #2419779
    Amiga500
    Participant

    Go look at the 7 different ATF proposals. There are MANY ways to skin that cat.

    Good point.

    There are many different ways to approach a problem. “Different” does not necessarily mean “worse”.

    (Perhaps a lesson that needs to be taken on board by some on here)

    in reply to: The PAK-FA saga Episode 12.0 #2420704
    Amiga500
    Participant

    I am seeing at least two lines of stator vanes in those pictures of Deinos (excellent photos BTW)…

    This contrasts with Boeing’s technique with the SH, which used one row of stator vanes, with heavier camber. Aerodynamically, 1 heavily cambered row would be worse than 2 (of less individual camber) due to reduced boundary layer growth.

    As far as radar goes… no idea.

    in reply to: The PAK-FA saga Episode 12.0 #2420749
    Amiga500
    Participant

    If the F-35 needs to get lighter in a dogfight, it can dump 3,000lbs of fuel in ~6-8 seconds.

    Hmmm… 2 options.

    (a) dump fuel into the afterburners to increase ke prior to fighting.

    (b) ping a couple of missiles at the guy your gonna be fighting.

    I know which I prefer… and it ain’t increasing speed.

Viewing 15 posts - 1,981 through 1,995 (of 2,151 total)