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aerospacetech

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Viewing 15 posts - 751 through 765 (of 1,127 total)
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  • in reply to: Vietnamese Su-30s?? #2691413
    aerospacetech
    Participant

    As a MiG-21 operator the FC-1 would be the obvious choice for the low end. MiG-29 is too expensive to run.

    in reply to: Congrats to new mods :) #2691680
    aerospacetech
    Participant

    I didn’t really want to be moderator of such a forum… its lots of work or none at all depending on how you moderate.

    Personally while I enjoy Crobato’s posts, he seems more prone than most to getting into slanging matches. What you need in a moderator is someone who can stand back from the argument, not get stuck in. Now, everyone has bad days, I know I’ve got annoyed from time to time, but you have to stop and stand back, think before posting.

    in reply to: R-77 Missile in RuAF's Fighters #2691716
    aerospacetech
    Participant

    AFAIK, only the 16 MiG-29S (9.13S) could fire the R-77. There is a squadron of them with the 14th IAP at Kursk, plus 4 at test centres.

    The Su-27 upgrade program will make them compatible, of course.

    in reply to: Kh-59 ASM family #2691719
    aerospacetech
    Participant

    They have Kh-59ME in service, I think the Kh-59MK may be coming later.

    in reply to: Infrared AAMs #2692160
    aerospacetech
    Participant

    *Early* IR AAMs used PbS seekers.

    Later on, the PbS seekers were cooled (e.g. AIM-9G/J, R-60M).

    InSb came later with AIM-9L and R-73 generation.

    in reply to: Germany Puts Its First Eurofighters into Service #2692313
    aerospacetech
    Participant

    That’s great for Germany but I wanna ask:

    1. Why did the Typhoon ditch the French M-88 engine and develop a new one from scratch? If Typhoon is meant to build for Europe I don’t understand it.

    2. Comtemporary US aircraft fighters prefer to use double vertical tails if twin engines are used. Why typhoon doesn’t follow this doctrine? I’ve heard double vertical tails is better than a single coz it has a low RCS. Even JSF uses double tails despite it’s single engine. And Mig 1.44 is an another example.

    3. Will a naval version of Typhoon be developed in the future? England which is among the joint development nations has a couple of aircraft carriers. If a naval Typhoon will be built, how does the JSF which England may purchase in the future fit in?

    4. I’ve heard Pakistani often dream of purchasing Typhoon as their new high end aircraft fighters which can form a high-low mix with their future FC-1. Will Typhoon available for export?

    1: The M-88 was designed for Rafale about the same time as EJ-200 for Typhoon. Your statement makes no sense- M-88 didn’t exist at the time.

    2: A single tail was considered adequate, lower weight, and out of the way of vortices from the canards,etc.

    3: No

    4: Not likely anytime soon

    in reply to: Vympel offers new R-27EP anti-radar missile #2692760
    aerospacetech
    Participant

    Well, there have been some very indepth books/articles on missiles in Russian.

    http://www.airwar.ru has done a nice job of compiling this info- see this page on Kh-25 for example:

    http://www.airwar.ru/weapon/avz/x25.html

    AS missiles are here:
    http://www.airwar.ru/enc/weapon/avz_data.html

    AA missiles are here:
    http://www.airwar.ru/enc/weapon/avv_data.html

    You can use an online translator or a grogram like Systran, or just admire the nice cutaways and drawings…

    in reply to: Vympel offers new R-27EP anti-radar missile #2693089
    aerospacetech
    Participant

    I read a US report that mentioned Kh-31P being used against AWACS- it said that E-3 was potentially vulnerable but E-2 not as it used longer wavelengths.

    in reply to: Vympel offers new R-27EP anti-radar missile #2693215
    aerospacetech
    Participant

    PiBu, the E-3’s APY-1/2 operates around 10cm wavelength, which is obviously still centimetric.

    Fighter radars operate in X band, about 2.5-4 cm wavelength.

    The Patriot’s MPQ-53 radar operates in C band, which is 4-8 cm wavelength, and was targeted by the Kh-31P, which shares technology with the R-27P seeker.

    It seems possible at least it could home on the E-3, unless you know better…

    in reply to: Su-30MKM #2693298
    aerospacetech
    Participant

    Andrei Fomin worked very closely with Sukhoi when writing his book. Its pretty good overall, certainly the best book on Su-27, but it does have some mistakes. Andrei Fomin posts on a Russian language forum I visit sometimes, and he was recently admitting that he was wrong to say that the IR R-27 models have INS+datalink.

    He did mention a new edition as well, IIRC 😉

    in reply to: Radar questions #2693358
    aerospacetech
    Participant

    I didn’t do that well in aero eng- what with all those online MUDs, IRC, XTank, beer, nightclubs, parties etc etc….

    I am now working freelance doing networking, support, web design, etc.

    in reply to: Radar questions #2693382
    aerospacetech
    Participant

    No, I’m an amateur interested in planes and computers 😉

    I found that image on a website, so I can’t take credit for it.

    in reply to: Modern Fighter data processors #2693594
    aerospacetech
    Participant

    As of 1998:

    There are two CIPs in each F-22, with 66 module slots per CIP. They have identical backplanes and all of the F-22’s processing requirements can be handled by only seven different types of processors. Currently, 19 of 66 slots in CIP 1 and 22 of 66 slots in CIP are open and available for expansion.

    in reply to: Modern Fighter data processors #2693596
    aerospacetech
    Participant

    Its a myth that the F-22 uses “an i960 processor”. It uses banks and banks of processors, both i960 and PowerPC. Individually a PIV might beat each processor, but there are LOADS of em in there, in a big rack thingy (CIP).

    in reply to: Radar questions #2693602
    aerospacetech
    Participant

    Is this clearer? The top one is like a planar antenna- a group of emitting elements all in phase, producing an overall wave straight forward. Below, we alter the phase of each element, so the left hand element is emitting first, with each element to the right offset a little bit more. The effect is a beam going off at an angle.

    And thats how electromagnetic waves work, so if it doesn’t make sense, sorry. Is light a wave or a particle?
    ‘;)

Viewing 15 posts - 751 through 765 (of 1,127 total)