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kilcoo316

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Viewing 15 posts - 661 through 675 (of 721 total)
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  • in reply to: Air Superiority with a F-22 / F-35 combo? #2602259
    kilcoo316
    Participant

    Yep 60 miles. It’s probably from a supersonic, high-altitude launch but I’ve seen that figure quite a few times. As for the SAMs the SDB will likely be cheaper than just about any SAM that’s got a chance of taking one out so I’m sure they’d be willing to trade them all day long.

    I’m not talking about taking one out – the fragmentation cone could be big enough to take out several… no?

    And if they aren’t saturated enough then the LPWS could take them one by one as they come in nice and slow.

    in reply to: the russian typoon class sub #2057750
    kilcoo316
    Participant

    Soviet solid-fuel rocket technology lagged significantly behind the US. The R-39 solid-fuel rocket which arms the typhoon is 16 m long, 2.4 m in diameter and weighs 90 tons! Compares poorly against the Trident D5 (13m, 2.1 and 58, respectively, if I remember correctly).

    Hardly fair – The R-39 was test firing nearly 10 years before the Trident D5…

    in reply to: A320 with winglets #577756
    kilcoo316
    Participant

    They are meant to give a decent improvement in the effective wingspan (something like 10-15% if done properly).

    Obviously this gives a higher effective aspect ratio and thus reduces lift-dependant drag.

    edit: Just read through distillers link, never thought of the effects of sidewash on the winglet before. 😮 😀

    Distiller: I don’t see why winglets wouldn’t give you advantages in both short and long haul – you get more lift for less, never a bad thing :confused: I’m sure you’ll tell me why though… 🙂

    in reply to: Air Superiority with a F-22 / F-35 combo? #2602283
    kilcoo316
    Participant

    Wrong conclusion. The military are clever enough to have the boundaries of present or future technology in mind. For the simulations it is no problem to add the missing percentages in performances. Maybe some simulated SAMs have surpassed the real thing, which entered service right now or in the coming years.

    Don’t forget, things like the S-400 will have been designed with the F-22 in mind. Its a never ending cycle of meeting and beating the other guys innovations.

    I’ve no idea which would ‘win’, but I do know that its easier to upgrade the radar and fire control on a SAM than it is to further reduce the RCS of the F-22. Simple design limitations say that, so it might not be unreasonable to expect SAMs to progress faster than the aircraft they are facing up against.

    in reply to: F-22 "downed" 5 F-15C #2602287
    kilcoo316
    Participant

    Polyurethane paint at a specified thickness.

    I see Nissan have come up with a kind of paint coating that automatically repairs itself after getting scratched.

    Basically an enamel, which will soften under heat (hot water level of heat) and close the scratch.

    I suppose with the heat considerations for aircraft this wouldn’t be feasible at this temperature range. But surely with a small blowlamp/blowtorch….?

    Maybe that is what the F-35 will be using?

    in reply to: F-22 "downed" 5 F-15C #2602402
    kilcoo316
    Participant

    I wonder do they use a kind of enamel to protect the actual surface itself?

    Would kinda make some sense, but I’ve no idea about RAM.

    in reply to: Air Superiority with a F-22 / F-35 combo? #2602404
    kilcoo316
    Participant

    Well those people dont happen to be involved in either the US aviation industry or that of russia as even the russian defence establishment wants a full stealth job for the PAKFA with internal weapon bays and all..As a matter of fact looking at projected future aircrafts(tech demonstrators and others) of russia (1.44,su-47,PAKFA) , India (MCA) and the various euro UAV projects one does get an impression that airframe Stealth has been given utmost important..

    Good and very interesting point. Now, does Russia’s move to airframe low observables mean:

    1. They cannot get their plasma tech to work?
    2. They have and it doesn’t give the benefits they thought?
    3. It does give the benefits but compromises the design too much?
    4. Airframe and plasma on the same aircraft will give an even better performance?

    in reply to: Air Superiority with a F-22 / F-35 combo? #2602647
    kilcoo316
    Participant

    I am not for the guarantees but against it!! What i am trying to communicate is that the S-300’s and 400’s have not been tested against the raptor and JSF like jets let alone the B-2 etc etc..

    Yet you lot are perfectly happy saying:

    “oh, F-22 + F-35 + B-2 will happily fly along, drop their bombs on the baddies, who all die and then fly home to van halen”

    It works both ways. F-22 etc hasn’t been tested against S-400, nor has S-400 been tested against F-22.

    One thing is for sure, its easier to upgrade a SAM platform than further reduce the radar cross-section of an in-service aircraft (especially one designed for low radar returns from the outset). So if the F-22 etc have an advantage, it can only be eroded over time, the F-22/F-35/B-2 will never get “more stealthy” (for want of a better term) but the S-400 can have processor upgrades etc to enable better discernation of aircraft among clutter.

    in reply to: Is this Iranian MiG-29 an SMT? #2602686
    kilcoo316
    Participant

    The interim for Russian AF is Su-27SM. I don’t see how Su-37 fits in here..

    Ahh right – just getting lost in the (seemingly) thousands of flanker designations and derivatives 😮

    in reply to: Is this Iranian MiG-29 an SMT? #2602715
    kilcoo316
    Participant

    That smells like a rather major redesign to me.. The only question would be – does such feature attract more export customers in the extent that it’s worth putting money in? The answer is loud and clear – no.

    It would only need an extension to the duct length I think, to allow the trailing edge effects of the ‘spiral plate’ to dissipate into the flow before the compressor/fan face.

    Ah ****, just realised, the ramps for variable shocks would need fixed – damn… well, I suppose they could use the same bleed idea that the F-22 has.

    But I thought the Su-37 was for Russia as an interim until the PAK-FA comes about. :confused:

    in reply to: Is this Iranian MiG-29 an SMT? #2602755
    kilcoo316
    Participant

    Boeing uses something similar in the intake of the F-18E/F and apparently used something along these lines in the intake of the X-32.

    If thats the case, I wonder why it was never considered for the updated Su-37 ‘Terminator’ :confused:

    Seems like a pretty straightforward step to me…

    in reply to: Air Superiority with a F-22 / F-35 combo? #2602756
    kilcoo316
    Participant

    Range of SDB is more like 40-60 miles.

    Fair enough, but a gliding bomb from 60 miles?

    Depending on what the radar filters are set at it might not achieve much surprise, and the fragmentation cone of a pukka SAM is bound to remove alot of them.

    in reply to: Is this Iranian MiG-29 an SMT? #2602870
    kilcoo316
    Participant

    Any intake that allows radar to illuminate rotating compressor blades is naturally unstealthy.. There are many other aircraft like this: F-15, F-16, J-10, EF2000(?)…

    I have wondered why they have never used a simple corkscrew type fairing within the duct (ok, lengthen the duct a little too). It shouldn’t screw the airflow up too much – old jets did used to have a pre fan stator row after all.

    Say a RAM plate that starts vertical and moving back down the duct twists through 180 or 270 degrees, so the radar cannot directly see the fan compressor.

    Maybe its just not viable, or maybe they never considered it.

    in reply to: Air Superiority with a F-22 / F-35 combo? #2602914
    kilcoo316
    Participant

    1. You lot are assuming they can get close enough to launch SDBs while remaining undetected – doubtful to be honest.

    From here:http://www.af.mil/news/airman/0106/00_PDFs/48-49_Bombs_and_Missiles.pdf

    I’d guess at 20-30 miles, do you want to be within 30 miles of an S-400 or equivalent? If they cannot get close enough to launch, no SDBs.

    2. The systems that ‘counter’ the SAMS have been designed, and are flying (F-22 and F-35), their radar signatures are dictated by their shape and internal structure, which is now fixed. I don’t see how they are going to ‘counter’ SAM development without jamming support and its questionable whether that would work within 30 miles. There are also home on jam missiles for that kind of threat.

    3. Due to fears over casualties, it would come back to the normal – saturate and overload the defence with low-level tomahawk cruise missile strikes.

    in reply to: Nuclear aircraft #2603068
    kilcoo316
    Participant

    I had been under the impression that the modified Tu-95 had conventional outboard engines and nuclear inboards.

    I see now that it never actually flew – thanks for the info all 🙂

Viewing 15 posts - 661 through 675 (of 721 total)