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MadRat

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  • in reply to: What were the potential market for the Mirage 4000? #2181078
    MadRat
    Participant

    ?
    No, the dry SFC for the M88 and M53 is 0.78 lb/lbf.h and 0.88 lb/lbf.h, the dry thrust is 11,240 lbf and 14,388 lbf.

    The game Dassault played to show greater efficiency is maximum dry thrust for a pair of M88 against a single M53 in wet thrust, because obviously two M88’s have far higher dry thrust than does a single M53. It’s not a fair comparison, I know, but it’s how Dassault shows Rafale to be far more efficient on two engines.

    Its precisely 21%.

    http://www.safran-aircraft-engines.com/military-engines/training-and-combat-aircraft/m53
    http://www.safran-aircraft-engines.com/military-engines/training-and-combat-aircraft/m88

    Which M53 are you comparing to which M88. Generic numbers can be terribly misleading. The M88 uses blisk technology and carbon fiber blades versus M53’s aluminum parts. There is no M53 that scales within 21% of the same generation M88, and it only gets worse with M88 versions.

    I see the difference in weight is over 50%. M88 is considerably lighter and more efficient.

    in reply to: What were the potential market for the Mirage 4000? #2181841
    MadRat
    Participant

    The single M53 burnt more fuel in dry thrust than two M88’s do for the same power range. It only becomes more disparate with the second oven running. Now granted two M53’s at maximum dry will just barely run more efficient than the M88’s at that thrust level due to the M88’s leaning on zone one of its augmentors.

    The M53 although about 25% heavier only has a slight thrust edge over the M88’s well below a 25% difference. I believe it’s just under 15% different.

    in reply to: What were the potential market for the Mirage 4000? #2182463
    MadRat
    Participant

    Here’s a mock-up of the Mirage 4000 two-seater with Mica. Rafale is virtually the same aircraft at 75% of the weight.

    in reply to: battle of the sexiest: BBW version #2183750
    MadRat
    Participant

    Victor was cool, but not as cool as Vulcan. But you have to give it props for being elegant from many angles…
    http://worldwarwings.com/wp-content/uploads/2015/12/victor-takeoff-735x413.jpg
    I always liked Vulcan, better, but in some ways I agree with Victor being one of the best.
    http://www.globalaviationresource.com/reports/2012/global-aviation-magazine-previews-handley-page-victor-at-60/images/2.jpg

    MadRat
    Participant

    You saw the MiG-41? I am surprised 🙂

    Just the artwork on a russian forum linked from some russian news site I couldn’t read anyhow. 🙂

    MadRat
    Participant

    Russia has only two friends: Russian army and the Russian fleet. Why do we have to pay the Swedes?

    Fighter model of the sixth generation of TsAGI
    [ATTACH=CONFIG]249203[/ATTACH]

    Looks like MiG-41 without tails

    MadRat
    Participant

    See-through nosecones…

    MadRat
    Participant

    ATD-X has interesting intakes, too…

    http://www.mycity-military.com/imgs4/143473_60680077_Cb8RT6qUsAUMY2N.jpg

    in reply to: Indian Air Force Thread 20 #2186495
    MadRat
    Participant

    I almost think that India just needs to look for saboteurs in their LCA program at this point. There is absolutely no external reasons Tejas hasn’t scaled production. These debates about solutions span back to the 90’s. Tejas has limped along since the prototypes started flying. Before the prototypes the program moved quickly. Even the Kaveri engine problems didn’t really stall the program until prototypes started appearing. Is it really the Indian industrial machine broken or is their military being undermined? Just too many coincidences for this much human ineptitude.

    I’d love to see F-16 fly for India. But unless it’s the big wing version (I.e. F-2A) and a General Electric engine, I’m not so sure it’s worthwhile. They would almost be better off buying Mirage 2000 plans and build them. The F100-powered F-16 would mean yet another foreign logistical line of supply, whereas they already work with GE and the F404IN. The regular wing is pretty much no improvement over LCA. The big wing at least has four heavy duty hard points free when flying with droptank. Sure they could use CFT, but you didn’t improve the real issue, high wingloading.

    In no way am I saying they need F-2A. That is not actually a true F-16, rather it’s Japan’s own iteration of F-16 with a heavily modified forward body compared to the standard F-16. Japan created it’s own flight control system for F-2A which dramatically raised costs. But Japan also wanted total software control, to customize loads, too. India basically would need to do something similar to use Astra, Kh-31, and any non-US or indigenous weapons.

    MadRat
    Participant

    There are other types of inlets. You didn’t mention the F-105’s type.

    You have to see the forward swept inlet of the F-105 at a few angles to appreciate it’s flexibility.

    http://www.clubhyper.com/reference/images/f105intakejr_3.jpg
    http://www.clubhyper.com/reference/images/f105intakejr_1.jpg

    And not all shock cones work the same.

    in reply to: What were the potential market for the Mirage 4000? #2188571
    MadRat
    Participant

    It’s not even a contest

    http://tinypic.com/i4gz1x.jpg

    in reply to: What were the potential market for the Mirage 4000? #2191137
    MadRat
    Participant

    Why does it look from the 60’s? I don’t know if it’s just one reason…
    http://www.pyperpote.tonsite.biz/listinmaeu/images/stories/ListinMAE/news/pyperpote%20mae%20mirage%204000%20110921%203.jpg
    http://www.pyperpote.tonsite.biz/listinmaeu/images/stories/ListinMAE/appareils/dassault/mirage4000/pyperpote%20mirage%204000%2011.jpg
    http://www.museeairespace.fr/wp-content/uploads/sites/2/2015/06/d-06-mirage-4000.jpg

    in reply to: What were the potential market for the Mirage 4000? #2193083
    MadRat
    Participant

    Looked like something from the 60’s.

    in reply to: What were the potential market for the Mirage 4000? #2193270
    MadRat
    Participant

    Mirage 4000 just wasn’t pretty. If it had been similar to Rafale perhaps it would have been marketable….

    http://img12.deviantart.net/9a04/i/2016/095/1/8/mirage_4000_and__rafale_a_prototype_in_formation_by_fighterman35-d9to8tm.jpg

    in reply to: Indian Air Force Thread 20 #2197397
    MadRat
    Participant

    Perhaps if HAL had aimed for an M2K-class fighter to begin with they wouldn’t be so hampered by weight restrictions. And then the competition could have been on a 130 to 150kN class engines rather than the unobtanium that Kaveri has been. Seems to me the Indian government is self regulating from political infighting and bureaucracy. Everything that couldn’t possibly be a problem initially did happen, and that was after careful planning to avoid it. The larger Tejas would have still comfortably allowed an AMCA with dual engines between the MKI and LCA. And they wouldn’t be squeezing M2K performance out of an F404-powered light fighter…

    Al-31F1
    Al-31F2
    D30F
    M53-2
    F100
    F110

Viewing 15 posts - 301 through 315 (of 4,651 total)