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Amiga500

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Viewing 15 posts - 2,071 through 2,085 (of 2,151 total)
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  • in reply to: F-35 News and Discussion #2427794
    Amiga500
    Participant

    Most of this is utterly pointless (again, on both sides) because we simply don’t have REAL data.

    Yet you are allowed to pontificate regarding it being super-uber stealthy, and he/she is not allowed to have a different opinion without having their intelligence questioned? :confused:

    in reply to: Gripen NG beats SU-35 in a2a #2427799
    Amiga500
    Participant

    A- no modern fighter is going to out turn a missile.

    I strongly suggest you reconsider that. Particularly for large long range AAMs.

    It is an absolute myth that a modern 40g missile cannot be out-turned.

    60g missiles in a healty kinetic energy state… different story… although if the stories of some fighters being able to take 12 or 13 g if needs be are true… then even that is open to question.

    B- what’s the basis for comparison with the F-105? The F-35A(which will be the far most numerous model) is a 9g aircraft, with better performance than the F-16 or F-18, VLO, and has high SA.

    Better performance than the F-16? In what measurable parameters?

    Sustained turn performance? Nope.
    Pitch response? Nope.
    Pitch rate? Nope.
    Roll response? Nope.
    Roll rate? Nope.

    Having a larger controllable ultimate AoA means virtually nothing as you have no energy left to even try and avoid a missile after stalling for a few seconds.

    The comparison with the F-105 is quite obvious. An attack aircraft which had a secondary consideration for A2A combat. The heavy use of electronics was required to compensate for a poor airframe.

    C- later block models will have NGJ, DIRCM, EA, etc… combined with VLO.

    None of which are an inherent capability of the airframe. Exact same as the F/A-18. Use brilliant, mind-bogglingly good electronics to hide an absolute sh*tbox of an airframe.

    in reply to: KC-X round 3 FINAL RFP #2427802
    Amiga500
    Participant

    My point, which you seem blind to, is that since the 767 can do the mission…and more money stays in the USA, why not buy it.

    The other jet does the mission better.

    It will bring more money into the USA over the long term.

    IMO it is a crazy decision to turn down the chance of having both large OEMs assemble commercial (and military derivative) aircraft in your country.

    in reply to: KC-X round 3 FINAL RFP #2427805
    Amiga500
    Participant

    I understand English may be your second language, but you clearly went out of your way to take my comment out of context.

    What I said:
    “If it (the 767) keeps more work in the US than the competition, why not buy it?
    If Airbus/NG can guarentee the same…that’s a different matter.”

    My comment was about US workshare, not that the aircraft couldn’t do the job.

    The sentence immediately prior to your workshare comments was about the 767 meeting the USAF requirements.

    The paragraph immediately after the workshare comments was about whether Airbus can guarantee it can do the same as the 767.

    I don’t believe I read anything out of context. By leaving the supposed 767 advantages in requirements and workshare grouped in one paragraph, and saying Airbus could not do the same as the 767 in the next, I think anyone would have read it the way I did. Certainly, if that was a SOW, or a technical paper I was reading or writing, that would have been the meaning I would have taken, or be the message I was trying to convey if I wrote it like that.

    Perhaps your post did not quite convey what you meant… but as I said in the ATC thread, none of us are paid to take care with the grammar and construction of our posts here. 🙂

    in reply to: The PAK-FA saga Episode 12.0 #2427813
    Amiga500
    Participant

    Remember reading somewhere here that the front landing gear is shorter than the rear two which means it is bent foward here. So the horizontal front position in this image is NOT horizontal front position in the air. So the engine is MORE out of plane in vertical axis in this image than it will be in the air. So drawing circles on ground position front image is meaningless. Just commenting on vertical offset between intakes and engines here and not questioning the effectiveness.

    I’m aligning from the upper surface, so from that POV, the short front landing gear is not an issue.

    Of course, as you say, the attitude in flight will be different, but I’m sure most on here can make the estimate change in azimuthal angle. 🙂

    in reply to: The PAK-FA saga Episode 12.0 #2427819
    Amiga500
    Participant

    Guys, I think your ‘disks’ maybe a bit on the large side. Su-30MKI/AL-31FP:

    Probably. I was trying to match the approximate radius of the upper surface using paint…

    An effort that was always doomed to disaster! 😀

    in reply to: Rafale v Typhoon and the F22… #2428359
    Amiga500
    Participant

    the f-22 stalls after ~60+

    Don’t be ridiculous! 🙂

    It’ll stall at best around 30-40 deg AoA. After that you are post stall maneuvering.

    However, it can operate with an AoA of over 100 degrees… (up to 120? IIRC. sferrin might know the exact number)

    in reply to: The PAK-FA saga Episode 12.0 #2428363
    Amiga500
    Participant

    Can you put another disc over mine to show your opinion where compresso blades could be?

    IMO, they would be approximately where the large yellow panels on the upper surface end (their trailing edge)…

    http://i903.photobucket.com/albums/ac232/derstig/PAK-FA_IMG_9525.jpg

    in reply to: KC-X round 3 FINAL RFP #2428383
    Amiga500
    Participant

    So Airbus isn’t doing it out of concern for the American worker, taxpayer or defense budget. :rolleyes:

    The promise of building civil freighter in the US is just a ruse for the gullible.

    Airbus have been looking to get a foothold into the dollar market for a long time, it greatly adds security against the strength of the Euro.

    So, no, it is definitely not a ruse.

    At the end of the day, the Boeing product…which looks rather nice with winglets and its 3-point probe & drogue refueling system, plus a boom refueling recepticle above the cockpit) meets all USAF criteria. If it keeps more work in the US than the competition, why not buy it.

    If Airbus/NG can guarentee the same…that’s a different matter. But we know, they can’t do it.

    We know they cannot do it?

    What?

    Sorry, is the 330MRTT not flying around refuelling F-16s at a greater refuel rate than the proposed CAD drawings 767 would? :confused:

    in reply to: KC-X round 3 FINAL RFP #2428387
    Amiga500
    Participant

    Boeing says the A330 will cost $40 billion more in fuel costs over the life of the jet.

    Which is of course why airlines queued up for the A330 and dropped the 767 virtually overnight?

    $40 billion? BILLION?

    180 tankers…
    Fuel is currently $86/barrel, or ~ $750/tonne – $40 billion is 53.3 million tonnes of fuel.

    The average A330 fuel consumption in cruise is about 5.5 tonnes/hr (ranging from 5 to 6 tonnes/hr)…

    So that would mean about 10 million hours in cruise, or 54,000 cruising hours per tanker. There is ~8740 hours in every year.

    Which means there is 6 years of constant running… that is every minute of every day of every week for every last one of the tankers.

    Bull****? I smell a strong whiff of it.

    Also, Hundreds of millions for ramp strengthening and modifications overseas.

    Please. This is a serious discussion.

    Ramp strengthening… like every taxiway and runway on the planet got strengthened to deal with an A330?

    I wobnder what the real life cycle costs are?

    What happens now is not applicable to what will happen when 767 parts are running short, and the A330F line is still recieving full parts support from the manufacturer.

    And you’re sure Airbus wouldn’t?:rolleyes:
    After their performance on the A400, I would’t quite put them in the same category as Mother Theresa.:rolleyes:
    BTW: How do you KNOW Airbus wouldn’t do the same thing you so self rightously accuse Boeing of?

    Because the A330MRTT is flying, right now. Because the boom proposed for KC-X has been built and tested.

    At least with Boeing, more American money stays in the U.S. where it’s taxeed and spent by more US suppliers and workers.

    Oh FFS, here we go. I thought you were knowledgeable on aerospace.

    You know fine well the work share implications of the deal, and if you seriously attach more importance to keeping a dying line open for a few more years than getting the 2nd large OEM building aircraft on US soil (with the associated benefits that provides to the US aerospace supply chain), then you need your head examined!

    in reply to: The PAK-FA saga Episode 12.0 #2428397
    Amiga500
    Participant

    http://img.photobucket.com/albums/v297/wsoul/T50/t50.jpg

    You need to move those two discs inboard further. You are probably aligned with the turbine blades, the compressor blades will be a good distance upstream, and hence further intoward the plane centreline… and perhaps vertically down a bit too.

    Amiga500
    Participant

    Undoubtedly the Draken… the cranked delta is magic.

    Anyone that thinks otherwise needs to see an optican! :diablo::p:D

    in reply to: Gripen NG beats SU-35 in a2a #2428410
    Amiga500
    Participant

    In a general comment to the thread, I think many people are missing the point.

    The Su-27/35 variant used is only a fixed reference point. Ignore it.

    The conclusion that matters is that *apparently* the Gripen is a more potent A2A platform than the F-35.

    I for one would well believe it as I think the F-35 is an absolute turkey, another Thunderchief. The only difference from the Thud is that the JSF pilot will have perfect situational awareness of the missile that s/he cannot out maneuver and it kills her/him.

    in reply to: Gripen NG beats SU-35 in a2a #2428416
    Amiga500
    Participant

    It doesn’t have to. If a Flanker is flying around with its radar emitting at max power, the Gripen will know it’s location before it becomes visible on the Flanker’s radar.

    Indeed.

    But the exact same principle applies to every other radar in the sky. Thus, passive or offboard sensors are the dominant factor. Lighting up your own radar is tantamount to holding a big radar reflective board out of the cockpit saying “shoot me” on it.

    [Please don’t come back with this LPI bull**** that have so many amateurs creaming in their trousers. There have been papers on how to detect that published nearly 20 years ago. If that was in the public domain then, where exactly do you think the various militaries are now?]

    in reply to: Rafale v Typhoon and the F22… #2428981
    Amiga500
    Participant

    Setting angle would be the angle I would use to describe the “AoA” of the wing root with respect to the fuselage.

    Then use twist to work from the root to tip…

Viewing 15 posts - 2,071 through 2,085 (of 2,151 total)