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WinterStars

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Viewing 15 posts - 106 through 120 (of 349 total)
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  • in reply to: RuAF News and Development Thread 9 #2312138
    WinterStars
    Participant

    Pilot in a hurry to get home:

    http://www.youtube.com/watch?v=75lxOsh4nFQ&feature=plcp

    He scared the hell out of some babe in the car. 😀

    in reply to: Pak-Fa news thread part 21 #2312182
    WinterStars
    Participant

    Oh, it gets better. These Russkies doing civilian research into MWNTs found them to be not only highly absorbent in HF radar waves (micro/X-band), but also “almost radio transparent for [the] low frequency region”. In other words true ‘broadband stealth’:

    Hi Jō, what I could make out from the article is that the material is radio transparent at the 0.01 – 4GHz. It means the material essentially has low values of relative permittivity (εr < 10 ). So it will not be able to prevent the incident EM waves from returning to the source since the EM pass through it and reflects from the subsequent material afterwards. This seems rational since longer wavelengths (Lower frequency) are much bigger than the MWNT structures. So surface conductivity, skin effects are more pronounced than the absorbance.
    Also the author investigated around 29 – 34 GHz and found considerable absorption. However this is towards millimetric band which is pretty short range due to higher attenuation.

    in reply to: Pak-Fa news thread part 21 #2312265
    WinterStars
    Participant

    Oh, it gets better. These Russkies doing civilian research into MWNTs found them to be not only highly absorbent in HF radar waves (micro/X-band), but also “almost radio transparent for [the] low frequency region”. In other words true ‘broadband stealth’:

    VHF to L Band frequencies also you mean?
    I could not open that link.

    in reply to: Pak-Fa news thread part 21 #2313294
    WinterStars
    Participant

    Being a former subscriber to ‘New Scientist’, I should’ve been more wary of the outlandish claims they sometimes make- by their estimations we should all be driving inter-dimensional, time-travelling, flying cars by now.

    I stopped reading New Scientist a long time ago.
    Oh! those differences between a scientist and an Engineer. 😉

    in reply to: F-22 outpreforms the European Typhoon #2313609
    WinterStars
    Participant

    Is this your blog?
    http://www.phlydaily.com/2012/08/f-22-dogfights.html

    it looks like your blog, Waverider, F35, X-47 etc…

    in reply to: Impressive Weapons Load 2 (again) #2315532
    WinterStars
    Participant

    [IMG]http://2.bp.blogspot.com/-UvcqvsAfC4M/UB9sk-8hTxI/AAAAAAAAbcs/ahVN1jAFV…]

    1Saludo

    Which Missiles are those, Harpoon?
    Beautiful aircraft…

    Edit: Never mind… They are Harpoon

    in reply to: Pak-Fa news thread part 21 #2315539
    WinterStars
    Participant

    So you think missiles in the fast bays wont be A2A? Or BVR?

    I think he meant LR/MR BVR AAMs. Probably the quick bays would be too small to fit the BVRAAM. I think any improvement of RVV MD would be sufficient for WVR. And RVV MD is already getting longer legs than the R-73 and may engage uptil the short end of the BVR range.

    in reply to: Pak-Fa news thread part 21 #2315609
    WinterStars
    Participant

    According to Boris Obnosov, the RVV-MD and RVV-SD air-to-air missiles displayed at the show this time are designed for external carriage so far, but are, essentially, prototypes that will have spawned refined versions by 2014 to fit the PAK FA. They will become the backbone of its weapons suite in the dogfight and medium-range air-to-air missile classes.

    Improved R77 derivatives may well be what will arm the PAK FA.

    Page 32

    But then some of our Russian posters mentioned that Obnosov is one of the most tight lipped in the industry.
    There are a total of 11 Missiles in different stages of development.

    in reply to: Pak-Fa news thread part 21 #2315803
    WinterStars
    Participant

    I remembered somewhere about Flateric mentioning about the returns from “Cockpit Furniture” 😀 .

    in reply to: Pak-Fa news thread part 20 #2316073
    WinterStars
    Participant

    As I mentioned to WinterStars, the adapter has the added advantage that you can purpose design a new one to accommodate MRAAMs which might have to be staggered to fit, without having to adapt the airframe attachment points. So there might be method to the madness after all!

    a la Picatinny Rail.;)

    in reply to: Pak-Fa news thread part 20 #2316156
    WinterStars
    Participant

    We’re not interested in the zero electrical resistance and ejection of the magnetic field (Meissner effect), we want the complete opposite, the superconductors atomic structure facilitates that especially @ high temperatures. Savvy?

    Type II superconductivity still needs a superconducting material to be able to form any sort of field to attenuate EM waves. This thing is still new. Do you have any link to a paper etc. quite hard to swallow.

    in reply to: Pak-Fa news thread part 20 #2316297
    WinterStars
    Participant

    Whether or not it’s a disadvantage from a military point of view is debatable, but it would be a very weird decision considering the size of the weapons bays. The space is there for the taking thanks to the need to carry bulky AGMs – why not use it, even if the official requirement is for only 4 MRAAMs? More to the point, why on earth put two additional missiles (that you could theoretically fit inside the main bays no problem at all) in external fairings which can potentially cause non-trivial drag and RCS headaches?

    Exactly. But I think the smaller bays can release the missiles faster.

    Yes, I think we’ve established that now, emile’s drawing provides further evidence, nonetheless here’s my own sketch, which is of course to scale. In case 3cm of clearance between the R-77s seems a bit tight, consider that those boxes contain mostly air (the actual body is only 0.2m in diameter) and that in the F-22 they would be *overlapping* (see paralay’s drawing)! Or compare to this rather striking picture of the SDB launcher inside a Raptor bay:

    What would it be if the Indian AF wanted the Meteor. I heard they are interested in the Meteor. Meteor is amlost an inch smaller than the R77. Meteor seems promising too with no over ambitious design goals.

    in reply to: Pak-Fa news thread part 20 #2317708
    WinterStars
    Participant

    I am sorry for bringing this up. As you can see when flateric said two missiles per bay, I accepted it. I am now curious and motivated to discuss the reasons behind such a design choice.

    don’t mean to bore you, if that makes sense

    This is a forum. 😀
    Anyway, I am also very interested in this rationale behind the 4 LRAAM. I am sure it is not taken lightly and people who made the decision knew what they were doing.
    But what is it that makes them so sure 4 is the right number?
    Wonder Missiles? Engagement statistics? Airframe Limitation?

    in reply to: Pak-Fa news thread part 20 #2317777
    WinterStars
    Participant

    Do you think there is no merit in discussing why the plane can only carry 4 missiles?

    I agree. PAK FA may carry 4 missiles. Fine.
    But discussing whether 4 missiles are more than enough is also fine.

    in reply to: Pak-Fa news thread part 20 #2319229
    WinterStars
    Participant

    Actually the image at Ausairpower indicates it can carry 12!! :p
    Never mind…

    What do you think would be the loadout in a SEAD mission.

Viewing 15 posts - 106 through 120 (of 349 total)