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StarfishPrime

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Viewing 15 posts - 196 through 210 (of 250 total)
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  • in reply to: RuAF News and development Thread part 15 #2199981
    StarfishPrime
    Participant

    Think at the airstrip or the catapult needed for such a launch!
    Maybe is language difference , we used this term for conventional carrier when compared to the V/STOL or better STOVL ones
    Stobar? It is not for Short Take Off But Arrested Recovery? Kutnetsov, Ljiaoing, Vikrimandyta?

    Hmmm… looks like I’m wrong about there being no STOBAR carriers. I always assumed Kuznetsov used a catapult but apparently not.

    in reply to: F-35 News and discussion (2016) take III #2199983
    StarfishPrime
    Participant

    So, no sources and more conjecture.. got it. :stupid:

    I’ve just given you a source. That you’re wrong is now a fact, so the only question now is how long you want to make a fool of yourself for.

    https://www.asee.org/documents/sections/middle-atlantic/fall-2009/01-Evaluation-Of-Ring-Laser-And-Fiber-Optic-Gyroscope-Technology.pdf

    Ring laser gyros and mechanical devices continue to dominate the high performance markets,
    bias stability of 0.01 degrees per hour or better

    Gyroscope applications and associated performance requirements

    Air-To-Ground
    Spacecraft 0.1-0.001deg/hr

    Go show me the GPS on an LGM-118 or UGM-133.

    in reply to: F-35 News and discussion (2016) take III #2199996
    StarfishPrime
    Participant

    If an INS worked that good without external updates, then there would never be a use for GPS, terrain maps, terminal guidance, etc.

    You keep making all these performance claims that go against historical precedence and, quite frankly, logic.

    Try backing up your claims with sources. No, your pdf talking about the gyro itself does not count as there are many other components that make up the system as a whole, each introducing deviations.

    Sure there would, aircraft fly for much longer periods, especially larger ones, as do long-range cruise missiles, so drift would have more time to accumulate. Then you have other even longer operations, like space craft and satellites. Additionally, with certain targets, there may be a requirement to put a missile through the square window (to quote Rainbow:highly_amused:) or another weak point, e.g. a bunker door, hence DSMAC. I’ve also just posted a link which proves my point.

    My guess is that AMRAAM has moved to GPS INS simply on the grounds of commonality with other weapons rather than accuracy.

    I’m afraid my source does count, it also states the actual system requirement for the given applications, which is very low accuracy for SAMs if you note. You just don’t like being proved wrong, nor do you like admitting that Meteor might be better than an AIM-120D because it’s not made by the US, so you question range claims etc. none of which concerns were mentioned when you posted up this AARGM-ER range improvement graphic.

    http://s18.postimg.org/xwx7vn8x5/AARGM_Er_Range_Extension.png

    How very duplicitous of you.

    Then after range, you moved on to bleat about INS type, which makes absolutely sod-all difference in this application.

    Like I said, show me the GPS on LGM-118s and UGM-133s and then realise that the INS on them is over 30 years out-of-date. I can also tell you that the CEP requirements were much larger than the achieved CEP stated in IN COMBAT magazine 25 years ago.

    StarfishPrime
    Participant

    @StarfishPrime, spot on and off target at same time,
    one of Gripens strengths is the easy of integration of new capabilities, so first Meteor user, HMD, almost first beamed datalinks (E), first GaN, its no coincidence, its a pattern that we can expect to contiue..

    Does the Gripen C have all these capabilities or are you including those of the Gripen E, which is yet to reach IOC. Currently that IOC is scheduled for 2021. Other aircrafts’ capabilities may have changed in the interim.

    in reply to: Military Aviation News #2200021
    StarfishPrime
    Participant
    in reply to: RuAF News and development Thread part 15 #2200032
    StarfishPrime
    Participant

    Yes, i’m old school, before STOBAR acronym use.

    A CTOL carrier would be really big.:highly_amused:

    STOBAR isn’t used on any carriers I can think of but there is some kind of recovery gear on the QE class to collect F-35Bs when they’re carrying too much to VSTOL.

    in reply to: F-35 News and discussion (2016) take III #2200038
    StarfishPrime
    Participant

    Do you ever do research or use logic?

    KEPD has GPS and uses imaging/radar references when GPS is not available (as does Storm Shadow). An AAM cruising up at 30k+ feet does not have any kind of external reference besides GPS (ie, no imaging possible), apples and oranges.

    oh yeah, BS on 10m accuracy without GPS or any kind of terminal guidance (ie imaging, radar, etc) after a full length flight.

    Okay, so it does.

    That accuracy is perfectly possible with modern LRGs. Modern gyros in space application offer <0.001deg/hr, which is a lot better than the microradian (0.057deg) accuracy a fighter radar has when applied to a 320km flight range that’s going to last <5 minutes. Also note the accuracy requirements of SAM gyro.

    https://www.asee.org/documents/sections/middle-atlantic/fall-2009/01-Evaluation-Of-Ring-Laser-And-Fiber-Optic-Gyroscope-Technology.pdf

    Ring laser gyros and mechanical devices continue to dominate the high performance markets,
    bias stability of 0.01 degrees per hour or better

    Now please compute the following:

    500 * sin([500/1000] * 0.001)

    You do realise that ICBM warheads now manage accuracy in the tens of metres after a 10,000+km flight.

    in reply to: RuAF News and development Thread part 15 #2200053
    StarfishPrime
    Participant

    For a medium size navy a CTOL

    I think you mean CATOBAR.

    in reply to: F-35 News and discussion (2016) take III #2200063
    StarfishPrime
    Participant

    You can definitely fit 2. I believe it’s only the length of the bay that is affected, not the depth.

    It’s certainly showcased as fitting.

    https://mbdainc.com/mbda-showcases-its-missile-offering-on-f-35-on-farnborough-international-airshow-2016/

    in reply to: Russia moving tac air troops to Syria #2200072
    StarfishPrime
    Participant

    Are the data links LOS or NLOS?

    in reply to: Russia moving tac air troops to Syria #2200082
    StarfishPrime
    Participant

    There is no fly zone over large areas of Syria now. You won’t hear Israelis again. they are the nearest. There is very narrow corridors where other flightsare permitted. Satellites can’t provide real time and Russia knows flight paths of satellites and can deal with camo from it.

    In which reality are you living. There is no no-fly zone over Syria at present.

    You don’t need real time, since the thing is sitting in one place and you could time a missile flight to coincide with a passing satellite.

    in reply to: General Discussion #257455
    StarfishPrime
    Participant

    Which is the big problem in modern Western economies. Nearly all deficits would be zeroed overnight if only they could make corporations and the mega-rich actually pay their taxes. And it annoys me when I hear people discussing whether tax rates for the wealthy need to go up or down. How about you actually get them paying it at the current rate, then decide.

    in reply to: RuAF News and development Thread part 15 #2200086
    StarfishPrime
    Participant

    Well it depends on how you conceive French interests I guess. If you think they extend to reliving the glory days of empire in Syria, then sure you need a carrier for that. A more limited conception (Western/Central Europe, North/West Africa) , maybe not.

    Another factor is the one that JSR alluded to — the French Navy can hardly scrape together a single carrier battle group worthy of the name. Remove the carrier from the equation and the MN suddenly looks a lot more respectable.

    Well I disagree and I think the evidence is how much they use it. And a carrier isn’t just there for launching aircraft, it also serves as a large transport vessel.

    in reply to: Russia moving tac air troops to Syria #2200096
    StarfishPrime
    Participant

    how every one knows where it is when no overflight allowed over the areas. It’s practical no fly zone now.

    No it isn’t. And aside from that obvious BS, there’s such a thing as satellites.

    in reply to: F-35 News and discussion (2016) take III #2200101
    StarfishPrime
    Participant

    Actually, the longer the range the more of an error can be introduced from a traditional gyro-based INS. This is why GPS is an important addon as it maintains its accuracy no matter the range.

    Also, Storm Shadow has no ability to be updated in flight, so its INS accuracy is paramount.

    Nonsense, KEPD 350 manages fine without it and that’s a cruise missile, rated (conservatively IMO) at 500+km. Both KEPD 350 and Storm Shadow are capable of accuracy to within 10m even without the GPS or terminal homing and I hardly think 10m is going to make much of a difference given terminal homing. Furthermore GPS is vulnerable to jamming and can’t be relied on against a peer adversary.

    Aside from that obvious nonsense, given the level of inaccuracy in determining the aircraft’s exact range/bearing/speed using radar, the error of an LRG is the least of your problems.

Viewing 15 posts - 196 through 210 (of 250 total)