dark light

KKM57P

Forum Replies Created

Viewing 15 posts - 241 through 255 (of 577 total)
  • Author
    Posts
  • in reply to: Is the F35 a waste of time? #2493306
    KKM57P
    Participant

    There was no second loss or any airframe written off. The only replacement airframe flown to Europe was for 82-806.

    See following thread

    http://forum.keypublishing.co.uk/showthread.php?t=55238&page=3

    Read my post number 63 and read Arthurs post at 67

    TJ

    So what the 82-806 is non existent in the database anymore?! What should prove this. But any word about a MiG-29 or a second downed F-117? The second F-117 was only a total sth! Out of action is out of action!

    in reply to: Is the F35 a waste of time? #2493865
    KKM57P
    Participant

    You don’t actually think its that easy do you? I find it hard that anyone could think its that basic a process to shoot down what is a very stealthy aircraft. Just using the 117 as an example, that jet flew thousands of missions and only one was ever downed. I woul bet money on it that had we been sat here twenty years ago discussing the 117 you would have said “its a peice of cake to shoot down, all you have to do A few calls or radio transmissions are you are going to have SAMs pointing at them, interceptors heading their way”. Comical in many ways.

    Wrong, in Yugoslavia are two F-117 destroyed. One crashed and one writen-off F-117. That make two F-117 loss in combat.
    The crash was the alliance’s first loss in its 5-day-old air campaign against Yugoslavia!

    Russia Using F-117 Wreckage for Anti-Stealth

    http://archive.newsmax.com/archives/articles/2001/12/12/140853.shtml

    in reply to: Is the F35 a waste of time? #2494158
    KKM57P
    Participant

    there y got it! old fashion logic. Couldnt desribe it better my self šŸ˜€
    F-4 has alot better aero than F-35..and thats a design with two engines.

    The harmfull area is at at a two engined jet better distributed (area rule)!;)

    in reply to: Is the F35 a waste of time? #2496851
    KKM57P
    Participant

    Why is the F-35 BF-1 groundet since August 2008? More problems with the engine?

    in reply to: F/A-18E vs Typhoon #2449801
    KKM57P
    Participant

    He should not say the F-22 is the best and one minute later he is on the way to Gutanamo.:diablo:

    You should pay attention on his gestures.;)

    http://www.blifaloo.com/info/lies.php
    http://www.blifaloo.com/info/lies_eyes.php

    He denied that was he say, he lies sometimes (specially the part with the best fighter).
    The best part is the head-shaking (he denied that was he tells), brow furrowed with wrinkles and the eye moving, that indicate that he is not so confident.

    in reply to: F/A-18E vs Typhoon #2454345
    KKM57P
    Participant

    He should not say the F-22 is the best and one minute later he is on the way to Gutanamo.:diablo:

    You should pay attention on his gestures.;)

    http://www.blifaloo.com/info/lies.php
    http://www.blifaloo.com/info/lies_eyes.php

    He denied that was he say, he lies sometimes (specially the part with the best fighter).
    The best part is the head-shaking (he denied that was he tells), brow furrowed with wrinkles and the eye moving, that indicate that he is not so confident.

    in reply to: F-22 export not likely……….. #2450108
    KKM57P
    Participant

    You have reposted the initial article/thread starter. It’s best if you read the thread first mate. Oh and can you please link me to your sources on MIE scattering in the F-35 thread. I’m interested to learn.

    It’s not the Mie-Scattering and Rayleigh-Scattering of a F-22 or the F-35, my opionen is against the RCS estimations of a marble or a ping pong ball or golfball, with optical formular. The Mie-Scattering behavior is so complex that Skunk Works needs a Gray-Supercomputer for the Mie-Scattering calculation against the frequency for a simple form like a sphere.

    The polar diagramm blue shown the RCS blow-up factor at a wavelength of 3cm for a 1/2″ marble.

    in reply to: F-22 export not likely……….. #2454766
    KKM57P
    Participant

    You have reposted the initial article/thread starter. It’s best if you read the thread first mate. Oh and can you please link me to your sources on MIE scattering in the F-35 thread. I’m interested to learn.

    It’s not the Mie-Scattering and Rayleigh-Scattering of a F-22 or the F-35, my opionen is against the RCS estimations of a marble or a ping pong ball or golfball, with optical formular. The Mie-Scattering behavior is so complex that Skunk Works needs a Gray-Supercomputer for the Mie-Scattering calculation against the frequency for a simple form like a sphere.

    The polar diagramm blue shown the RCS blow-up factor at a wavelength of 3cm for a 1/2″ marble.

    in reply to: F-22 export not likely……….. #2450213
    KKM57P
    Participant

    Govt likely to drop plan to procure F-22 planes

    http://www.yomiuri.co.jp/dy/national/20081228TDY01302.htm

    The moves to abandon efforts to acquire the cutting-edge F-22 follow signs that the incoming U.S. administration of President-elect Barack Obama is leaning toward curbing or even halting production of the aircraft, the sources said.

    in reply to: F-22 export not likely……….. #2454915
    KKM57P
    Participant

    Govt likely to drop plan to procure F-22 planes

    http://www.yomiuri.co.jp/dy/national/20081228TDY01302.htm

    The moves to abandon efforts to acquire the cutting-edge F-22 follow signs that the incoming U.S. administration of President-elect Barack Obama is leaning toward curbing or even halting production of the aircraft, the sources said.

    in reply to: Is the F35 a waste of time? #2455804
    KKM57P
    Participant

    Read this link:

    http://www.aerospaceweb.org/question/electronics/q0168.shtml

    Here it claims toan’s methods of converting marble geometry into RCS are correct. Personally I have not done much work in this area – so I am all ears if you can prove to me its wrong.

    This is not correct!
    The optical region (ā€žfar fieldā€ counterpart) rules apply when 2PiĀ·r / Ī» >10. In this region, the radar cross section of a sphere is independent of frequency. Here is the radar cross section of a sphere, σ = PiĀ·r2.
    The radar cross section equation breaks down primarily due to creeping waves in the area where 2Pi Ā· r. This area is known as the ā€žMieā€ or ā€žresonance regionā€.
    But your marble is smaller as 2PiĀ·r / Ī» >10. Your marble and your ping pong ball is in the suboptical area and for this area are some another rules valid.
    Has your marble around the 1/3 diameter of wave lenght than ocour Mie-Scattering and your RCS is 400% greater as your σ = Pi·r2!
    Without the Rayleigh-Scattering.

    in reply to: Is the F35 a waste of time? #2455944
    KKM57P
    Participant

    I doubt he was rolling bowling balls across desks. šŸ˜€ In the US when one thinks of a marble they’re generally the cat’s-eye type that kids use to play with before the days of computers and ~1/2″ dia. We”re not talking about the dinky marbles raided from Chinese Checkers sets, quarter-pints, half-pints, boulders, or king-sized boulders. šŸ™‚

    This 1/2” metall marble has a RCS of -20dBsm and the metall ping pong ball has a RCS of 0 dBsm = 1sqm!

    in reply to: Is the F35 a waste of time? #2456376
    KKM57P
    Participant

    Ben Rich describes Have Blue’s RCS as marble-sized in the book “Skunk Works”. One would think they’d have gotten a little better in the ensuing 30 years.

    The question is what size of marble is meant.:diablo:

    “Most commonly, they are about ½ inch (1.25 cm) across, but they may range from less than ¼ inch (0.635 cm) to over 3 inches (7.75 cm), while some art glass marbles for display purposes are over 12 inches (30 cm) wide.”

    in reply to: Is the F35 a waste of time? #2456386
    KKM57P
    Participant

    -40 dBsm = 0.0001 m2 = 1 cm2 = the RCS of metal ball with 1.13 cm in diameter (Marble size)

    -30 dBsm = 0.001 m2 = 10 cm2 = the RCS of metal ball with 3.57 cm in diameter (Table tennis ball size)

    The RCS does not correspond to physical size!
    But a metall marbel has minimal a four time greater RCS!
    MIE-Scattering!!!
    The RCS follows not the formula σ = Pi·r^2!!!
    But we must use this formula!
    σ = Pi·r^2 · 7,11 · ( 2Pi·r / λ )^4

    That make a σ =0.01m^2 for a F-22!

    RCS (dBsm) = 10·log10(σ/1 m^2)

    RCS (dBsm) = -20dBsm!

    Wip all this public avaible RCS values in the trash bin!

    in reply to: F/A-18E vs Typhoon #2460410
    KKM57P
    Participant

    But the F-35 Software is limited up to 2016 to A2G.

Viewing 15 posts - 241 through 255 (of 577 total)