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garryA

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  • in reply to: Russia moving tac air troops to Syria #2136270
    garryA
    Participant

    No, only limited night vision with light amplification.

    Not in a TV screen in cockpit sense. The gunner look in a visor with light intensification and magnification if necessary .
    The visor is at right on this picture : http://i.imgur.com/i9wRzdQ.jpg

    Hmm, so do this night vision allow pilots to see and attack at night? ( abet at close range that is)

    in reply to: If you had to choose between Rafale or F-35 #2136581
    garryA
    Participant

    ASQ-239 might and I say might but care to provide a source for any other aircraft being able to guide missiles via RWR? And what happens if they don’t have their radar on?

    Passive geolocation is something that the Typhoon even has now but that doesn’t mean it’s good enough for guiding missiles.

    AN/ALR-94 is used to narrow down the search AFAIK, I haven’t seen any material detailing an entirely passive targeting of a missile BVR in a live test although it’s theoretically possible with IRST if the target is close enough.

    Sure, 3rd party targeting is possible, but one aircraft still has to keep the target locked.

    I think FBW reffering to mid course guide , not using RWR as targeting system

    And pray tell, what AAM are any Typhoon or Gripen users employing that require CW guidance? Mid-course guidance can be provided by AN/ALR-94 in the F-22 and the AN/ASQ-239 in the F-35. I’d be surprised if both the Gripen and Typhoon lack this capability in thier IDAS suites.

    Mid course guide by RWR cant compete with radar in term of accuracy though.

    in reply to: Russia moving tac air troops to Syria #2136586
    garryA
    Participant

    A simple look at the cockpit of the Mi-24 reveals that there is no TV channel installed, in the first place 🙂

    http://i.imgur.com/gVIuSGL.jpg?fb

    Alright , fair point ,i just got a look , really just a bunch of indicator clocks

    in reply to: Russia moving tac air troops to Syria #2136606
    garryA
    Participant

    Doubt it.

    If it does have such ability. Russia would not develop or offer Zarevo sight. Or just entirely replace raduga with more modern GOES.

    Mi-24V with GOES, notice that raduga sight is no longer in place.
    [ATTACH=CONFIG]248408[/ATTACH]

    Zarevo

    http://orig00.deviantart.net/de3e/f/2016/266/b/2/zarevo_by_stealthflanker-dailug6.png

    So in short, those early Mi-25 and Mi-35 for export, lacks thermal imaging or nightvision ability.

    or may be the new system has better resolution and sensitivity ? kinda like Sniper-XR replace AN/AAQ-13 and AN/AAQ-14 on F-16 ? , just find it a bit weird that Russian heli would lack basis function like night vision or thermal.

    in reply to: Russia moving tac air troops to Syria #2136625
    garryA
    Participant

    To be honest , i think it is a bit retarded to consider something is correct just because many members of general public believe in it.
    Have you guys forgot these hoax https://mediaequalizer.com/brian-maloney/2014/09/who-is-behind-this-sinister-isis-us-army-hoax ?

    in reply to: Russia moving tac air troops to Syria #2136651
    garryA
    Participant

    It does have Ir channel but that for tracking inflight beacon of the ATGM’s.

    I found this image of the system
    http://i729.photobucket.com/albums/ww293/binhbeo78/Raduga-Sh-1.jpg
    anyway, should the IR channel allow pilot to see target at night ? ( like how A-10 pilot sometimes use AGM-65 )

    on-board IR detector for 9M-17P “Falanga-P” rear facing transmitter detection (SACLOS system).

    does that thing lack TV channel too ?

    in reply to: If you had to choose between Rafale or F-35 #2136747
    garryA
    Participant

    Second, as others have stated, adding a swashplate takes up room that would better used for additional T/R modules, not to mention added complexity and cost, and make an excellent radar reflector when the array is pointed forward.

    To be fair though , fusion the data between the RWR and the swash plate , you can probably achieve lower RCS ( tilt the radar face in respect to radar direction )

    in reply to: Russia moving tac air troops to Syria #2136748
    garryA
    Participant

    their Mi-25s are basic models without FLIR..

    I dont know for sure what equipment Syrian has but isnt the thing on bottom left a FLIR system ? No ?
    https://017qndpynh-flywheel.netdna-ssl.com/wp-content/uploads/2015/01/t6.png

    in reply to: Russia moving tac air troops to Syria #2136752
    garryA
    Participant

    It does not have TV Channel. It’s not image target. The IRST operator cannot really see what he really shootin at just like radar.

    It’s rarely mentioned though that there are actually differences between IRST and a FLIR. The former does not really need TV channel as it task is to determine angular position of target. Frame rate wise there also differences where IRST can have slower frame rate of 10-15 FPS while FLIR need to do as good as our TV set at 60 FPS.

    Only recent OLS-35 have TV channel.

    Interesting , iam not aware of that , always thought only very early IRST such as the one on F-8 dont have a TV channel

    in reply to: Russia moving tac air troops to Syria #2136754
    garryA
    Participant

    It’s very limited in spectrum, hence utility is limited. It can have the biggest lens in the world, but if it cannot see the correct IR spectrum then it’s useless… It’s to what colorblind is to vision.

    Isnt S-31E2 KOLS also use 3-5 micron wavelength ?

    garryA
    Participant

    ^ @Star, next time can you seperate the paragraph into several quotes that corresponding to their reply? ( short of like what i did, so that it is easier to follow)

    in reply to: SAAB Gripen and Gripen NG thread #4 #2136891
    garryA
    Participant

    .

    ‘Ignore’ is perhaps the best policy, but I have some concern that newcomers to this forum might take JSR’s ramblings as being reliable information.

    I totally get this man

    in reply to: Russia moving tac air troops to Syria #2136895
    garryA
    Participant

    . The KOLS IRST ball of the MiG-29 is used for A-A only.. ..

    Why?, it is still a thermal system is it not?

    in reply to: Russia moving tac air troops to Syria #2137007
    garryA
    Participant

    [ATTACH=CONFIG]248395[/ATTACH]

    i tired my best but it looks like the cheese cracker looking thing would be the size of his arm, maybe they have like “3 foot long” cheese crackers in syria.. who knows but as you can see its not realistic , cardboard would burn up or disintegrate

    Are you sure those are cheese cracker ? btw according to to your picture those are not really 3 feet long, they look a bit bigger than a foot long , around a size of a subway , not really that outrageous to be fair. It a bit weird that cardboard wouldnt burn ,but then again that could be effect of metal explosive ? they have pretty small blast IMHO

    [ATTACH=CONFIG]So syrian moderate rebels were able to spot a su 24 at night at 2000 meters LOL- um yeah “ok” then im the hulk … saw helicoptors lol again at night with almost no electricity- this is Aleppo Syria lol

    this would depend , if it was dive bombing then i would recon the rebel can hear the aircraft , depending on how close pilot go down , the fire probably another factor , we also dont know if the heli open fire with machine gun or not though , 30 mm tracer are bright af . On the other hand , this could also be the result of an IED but Russia and US govt as a bunch of dick head they are , too busy to play political game rather than finding the cause.

    garryA
    Participant

    Its ballpark around 6% maybe more, though its my own measurement from this technical drawing:

    [ATTACH=CONFIG]248386[/ATTACH]

    The issue is not “only” the thickness of the airfoil, but also mechanisms that augment it;

    Lets list the principle 4th gen aircraft by their airfoils and aerodynamic features:

    Mirage 2k -> Unknown very thin airfoil (suitable for delta wing) + vortex generators + LE Flaps -> Clmax = 0,9-1,1
    F-15 -> NACA 64A203 -> Clmax = 1,2
    MiG-29 -> TsAGI P-177 + LERX + LE flaps + body lift -> Clmax = 1,5
    F-16 -> NACA 64A204 + LERX + LE flaps + relaxed stability + a “weird” FLCS that limits AOA by function of G (numbers are for CAT-I) -> Clmax = 1,16@9G; 1,33@8G; 1,5@5G; 1,72@3G
    Su-27 -> Unknown airfoil with ~%6 thickness + LERX + LE flaps +relaxed stability + body lift -> Clmax = 1,85

    As i understand the pylon will reduce CL by quite a significant value ( about 0.2 on the DC-8 , as i heard ) , so have these value taken that factor into account ?

    A Su-27 pilot going into dogfight at sea level (at half fuel) will keep its speed around 600 and 825 km/h, because former is the point where Clmax (1,85) is achieved at structural limit (9G) to give its highest instanteneus turn rate (30,19 deg/s). and latter is the point where Su-27 reaches its highest sustained turn rate ~21,75 @ 9G.

    An F-15 pilot under exact same circumstances will have to be a little faster, because his aircraft produce less lift, so it reaches its 9G limits at faster airspeeds (23,83 ITR, 20,5 STR). That doesn’t mean its better in energy maneuverability, at S/L its both sustained and instantenious turns are actually quite inferior to the Su-27. And that is not just at maximums. if vertical play is not a problem (climb rate improves with airspeed) a Su-27 pilot can easily stick at around ~600 km/h all the time; when he pulls the stick he has more than 30 deg/s ITR, and if he is gentle on the stick, Su-27’s aerodynamics allow an 21 deg/s Sustained turn rate at that speed at just 6,3Gs at 600 km/h, still beating anything F-15C is capable of sustaining even at 9Gs. That is a clear edge provided by energy efficiency of Su-27’s aerodynamic design, as no pilot can turn at around 9Gs for minutes but ballpark 6Gs are simply easy for any trained pilot.

    But vertical performance is always important though
    i would say the relationship between su-27 and F-15 here is rather similar to the one between f-16 and f-14
    http://s21.postimg.org/j8eey9myv/New_Bitmap_Image_2.png

Viewing 15 posts - 706 through 720 (of 948 total)