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KKM57P

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Viewing 15 posts - 196 through 210 (of 577 total)
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  • KKM57P
    Participant

    Even with the supposed 30 decibels of RCS reduction it still seems pretty marginal.

    Is only the factor 1000?!;)

    in reply to: Good News for the F-35 Program #2490751
    KKM57P
    Participant

    2. the main limitation on high mach speeds is the inlet. The F-15 had a complicated mechanical diverter. The F-22 has a diverterless inlet that reduces max speed but reduces complexity and weight

    Where has the F-22 no diverter? The F-22 has two diverter but no moveable ramps. The F-35 has no diverter. A diverter hold the boundary layer away from the intake.

    in reply to: Good News for the F-35 Program #2493960
    KKM57P
    Participant

    Sorry, larger wing of the F-35C may have a very small drag penalty. Yet, its still more efficient in lift and range…………..Which, was my point.;)

    At slow speed and subsonic yes (the must land on a carrier), at transsonic and supersonic no.
    It’s simple area ruling. :diablo:

    in reply to: Good News for the F-35 Program #2495022
    KKM57P
    Participant

    BTW The F-35C has a larger and more fuel efficient wing than the smaller F-35A. To go along with the added 1,605 lbs of fuel…………Just thought I would bring that up.;)

    The C-Wing has more harmfull area and therefore more drag.:rolleyes:
    A high aspect ratio is bad for a good supersonic performance!:diablo:
    The C-wing is not more efficient as a A-Wing.
    The C-wing has the greater aspect ratio and greater surface.

    in reply to: Good News for the F-35 Program #2496597
    KKM57P
    Participant

    What make a fatigue test sence when the AA1 have nothing to do with the series standard?!
    Or any testfligth with AA1?
    Or why this snail test speed?
    The BF1 make no hover test until autumn.

    in reply to: Good News for the F-35 Program #2496645
    KKM57P
    Participant

    Cw x A or area rule problems due the fat body? A Cw value like the Westminster abbey and a body far away from a Sear-Haack-Body (Haacksche Orgive).
    Or why have the F-35 not carried out only one high speed test?
    No fligth faster as the transonsic area!

    in reply to: JSF DAS range #2498871
    KKM57P
    Participant

    Whats the distance someone with 6/6 vision can see a fighter/missile??

    Visual discrimination is 0,5′ to 1′ at optimal conditions (no camouflage) that is 1 mm at 3-6 meters. Frontal some hundred meters, but you detect not the missle visual. You detect the far greater mach cone (stagnation temperature) and the plume IR emission.

    in reply to: JSF DAS range #2498975
    KKM57P
    Participant

    There was a post several months ago that had video from an F-22 missile launch detector (which is basically an older MWIR sensor built by LM Orlando that does the same function as F-35’s DAS). The video showed the MLD set up to overlook a desert valley many tens of miles wide and showed a hot target crossing from center background to right foreground. If you can find that video, it will give you an idea of DAS range capability.

    ETA: Found it!
    http://www.lockheedmartin.com/products/MissileLaunchDetector/MLD_Video1.html
    http://www.lockheedmartin.com/products/MissileLaunchDetector/MLD_Video2.html

    So what, what is the difference to a EADS/Thales Multi-Color Infrared Alerting Sensor (MIRAS) missiles warn sensor? It’s not multi color!

    The Multi-Color Infra- Red Alerting Sensor (MIRAS) is the first missile warning system worldwide applying simultaneous, single-chip multi-color infrared detection technology which offers an unprecedented combination of detection probability, detection range and low false alarm rates.

    in reply to: Eurofighter Typhoon news II #2499476
    KKM57P
    Participant

    Not only that, he can make a plane really invisible.

    in reply to: Eurofighter Typhoon news II #2499513
    KKM57P
    Participant

    I suggest the doctor thesis “Signal Processing for Airborne Bistatic Radar” from Kian Pin Ong

    Then take a look in the Acknowledgements. 😉

    in reply to: Eurofighter Typhoon news II #2499637
    KKM57P
    Participant

    But then again, why call it a “passive” radar?
    And of course, why even claim that was something extraordinary, whatsoever?????

    Could it be, that both aircraft were forming some kind of bistatic radar arrangement:dev2:, one emitting (the further away) and the other (closest to the threat) receiving?

    Things get just a little bit more interesting, if one takes account one presentation for the Norwegian AF some years ago.
    Nobody of us was present to listen to what was told,
    but,
    the RNoAF uploaded the slide show of the presentation, on the net, and there was, a rather peculiar slide:
    http://img268.imageshack.us/img268/336/879798.th.jpg

    Aha, The passive radar again? Could it be a coincidence?

    And against what? The mighty stealthy, and upcoming F-35. Hmmmmmm
    Getting interesting, right?

    Is your monstatic RCS low then is your bistatic RCS high, you can only eat a cake one time!

    The laws of physics maintain that energy must be conserved. If the monostatic RCS is reduced by shaping, the incident energy must be distributed elsewhere. As such, the target signature is increased at some or all bistatic angles!

    in reply to: Rafale vs Gripen!! #2501406
    KKM57P
    Participant

    In addition, the F-16 pilots’ problem isn’t only due to the angle, but also to the brutal G onset, something which is software limited on Rafale so as to protect the crew.

    With analog F-16-FCS yes with digital FCS is the onset rate limited.
    EF Pilots need a special neck body building trainig.;)
    Only us frech friends have no problem with it’s neck, with a more inclined seat.:rolleyes:

    in reply to: Rafale vs Gripen!! #2501835
    KKM57P
    Participant

    The Rafale’s cockpit is also inclined at 28 degrees I think and elevated for better G tolerance and visibility, I know the Eurofighter is inclined much less. What is the inclination of the Gripens seat?

    But Rafale induced more stress on the pilot neck lieke all jets with the beach chair . Arm pain and g-force is not thema with the Libelle.
    Then stand G fore the gravitional constant and not for g-force!

    in reply to: Eurofighter Typhoon news II #2503370
    KKM57P
    Participant

    BIP Brutto Inlandsprodukt – gross domestic product
    KKP Kaufkraftparität – purchasing power parity

    in reply to: Eurofighter Typhoon news II #2503387
    KKM57P
    Participant

    Maybe should we take a look on the greek and turk BIP!
    $324,6 Bn (Mrd) Greek and Turk $906,5Bn (Mrd).

    ~70% of the greek BIP is tourismus, trade, habour work and shipping!

Viewing 15 posts - 196 through 210 (of 577 total)