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Amiga500

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Viewing 15 posts - 1,201 through 1,215 (of 2,151 total)
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  • in reply to: Pak-Fa news thread part 20 #2335370
    Amiga500
    Participant

    I can assure you this was an apples to apples, physical optics calculation method simulation

    OK, just so as I understand what you are presenting here.

    – Best estimate CAD geometry from pictures drawings etc. Nothing wrong with that – its reasonable given the information available. Ignore the fanbois that complain otherwise.
    – Surfaces are taken as 100% reflective (no RAM effects). Again, nothing wrong with that as RAM effectiveness is unknown. As aboe, ignore any fanboi complaints.
    – Azimuthal angles of the incident ray are…? horizontal to the aircraft – or have you presented the full spherical array averaged? (RMS or similar?)
    – Wavelength is immaterial to this kind of simulation? It is essentially reflection based, with constructive/destructive interference, is that correct?

    in reply to: F-35 Vs. PAK FA? #2335373
    Amiga500
    Participant

    Sounds like an over-simplification and stereotyping.

    Yet broadly true.

    You can go look into it yourself if you want.

    Problem with applying sloppy production standards and tolerances is that it reduces the operating life of the machine produced, and usually reduces reliability.

    Trade that against expected machine life and against the number of machines you pump out.

    in reply to: F-35 Vs. PAK FA? #2335834
    Amiga500
    Participant

    Attach pictures to post, unfortunately only in Russian.
    This is the result of simplified comparison on a number of parameters.

    http://paralay.com/paralay_tab.xls

    Now…

    While I admire your enthusiasm – and no doubt there is knowledge there too.

    Your plucking a lot of those numbers out of thin air. For instance, your calculations for RCS is based on little more than weighting factors. 🙂

    in reply to: F-35 Vs. PAK FA? #2335872
    Amiga500
    Participant

    It was also heavier than most panzers, but I’m not sure the T-34 was so mechanically simpler than a typical panzer?

    Yeah, there was significantly less precision used in its build.

    Here is an example – in the cold Russian winter, the German Panzer engines froze solid while the Soviet ones could start.

    Why?

    Because of the tolerance of the pistons within the cylinder block. The Germans had such small gaps, so freezing moisture could lock it solid. The Soviets pistons were so much looser fitting (due to lower manufacturing tolerances) that they didn’t freeze.

    Of course, the downside is less power (due to less compression) from the Soviet engine when both are running… but a running engine beats a frozen one any day.

    in reply to: F-35 Vs. PAK FA? #2335922
    Amiga500
    Participant

    PAK FA by the sum of the parameters exceeds the F-35:
    the far dogfight by 26%
    in close air combat by 30%
    efficiency / cost exceeds 47%
    success rates (numerology) by 56%

    ?!?! :confused:

    What is your basis for the quantifications?

    in reply to: F-35 Vs. PAK FA? #2335959
    Amiga500
    Participant

    Cost was certainly part of it.

    You say this.

    The Soviets supposedly realised they could produce far more T-34s than the IS, which was one reason why such a small (tiny) proportion of their fleet were heavy tanks.

    Then this.

    The basic philosophy, attributed to Stalin: “quantity has a quality all its own”.

    Followed by this.

    Now; the first comment may be true. The second is almost certainly true – but not for the reasons you infer – they could produce more in the same time.

    The 3rd comment is a bit of a mis-representation. The T34 could go toe-to-toe with any Nazi tank. It was not as if they were pumping out sh!tty Shermans and (therefore) giving their troops inadequate tools for the job.

    in reply to: F-35 Vs. PAK FA? #2335963
    Amiga500
    Participant

    Have a look at Russian and US GDP figures:

    What is the relevance of that?

    in reply to: F-35 Vs. PAK FA? #2336457
    Amiga500
    Participant

    But, as the F-35 will be cheaper (on a puchasing power parity basis for the air forces involved)

    Can this be said with any certainty? :confused:

    in reply to: Airbus A380 At 50 #534782
    Amiga500
    Participant

    The fact is that there has never been a successful double decker airliner. What has changed to make that configuration suddenly successful?

    Aside from the general premise, which you know I already disagree with…

    Can I infer from this ‘fact’ that the history of aviation is littered with double deck airliners that were failures? Care to enlighten me and name some? 🙂

    in reply to: F-35 Vs. PAK FA? #2336462
    Amiga500
    Participant

    To achieve a demanded level of system-integration all the related software has to be written new, tested and certificated in the end.

    Not necessarily.

    It depends how good they were when they did the system interfaces on the Su-35.

    If they defined a common standard (which is an incredibly hard thing to do), with consistent parameters, then the same sensor software can work with a different controller (and visa versa).

    Also, the Swedish model is an excellent one to follow – decouple weapons systems from safety critical flight systems. So you can upgrade one without having to re-certify the other.

    There is no need for your radar controller to exist on the same network as your oyxgen controller (to pick one example).

    in reply to: Pak-Fa news thread part 20 #2336618
    Amiga500
    Participant

    I’ve added a certain poster to my ignore list.

    User CP -> Settings & Options -> Edit ignore list

    Probably not a bad idea if everyone does likewise.

    Trolls die of starvation quite quickly when not fed. 🙂

    in reply to: F-35 Vs. PAK FA? #2336998
    Amiga500
    Participant

    So this is an unreasonable thread?

    Nah – just don’t expect much of substance to come out of it! 🙂

    But the speculation and arguments that result should be good fun 😀

    in reply to: F-35 Vs. PAK FA? #2337012
    Amiga500
    Participant

    F-35 Vs. PAK FA?

    Too many unknowns to provide anything remotely definitive.

    One would think:

    -The PAK-FA will have notably better kinematic performance.
    -The PAK-FA may have a more powerful radar (larger nose).
    -The F-35 would have more integrated systems.
    -The F-35 will be more flexible.

    However, even if a PAK-FA can ‘beat’ an F-35 1 v 1 – that does not necessarily mean it is ‘better’ – as both can have very different roles within any air force.

    [and as most are no doubt aware – I’m no fan of the F-35 – but it is a bit unfair comparing it without context and without much more information]

    in reply to: Gripen for Switzerland #2339295
    Amiga500
    Participant

    Switzerland is very unlikely to find itself in a scenario where the Americans are going to block parts.

    Indeed.

    Even aside from that.

    How many murmurings of Swiss banks stopping dealing with and freezing the assets of US businesses and individuals would it take before any US resistance to a particular Swiss action (given it’s hardly going to be an invasion of Florida or similar) dries up?

    Not long I would think.

    in reply to: Weapon bays, internal or external #2339569
    Amiga500
    Participant

    This seems to indicate that wingtip missiles are a very good placement for RCS reduction.

    Mostly because the housing can serve two functions – moving the flexural centre of the local wing region forward (reducing flutter -> divergence) and also acting as a wing end fence – reducing lift loss in the wingtip region.

Viewing 15 posts - 1,201 through 1,215 (of 2,151 total)