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RuAF News and development Thread part 15

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    #41
    Originally posted by Berkut View Post
    Underside of the stinger has an air-ground link antenna and the triangles on the stinger are RWR's.



    Since 2014 production the stinger flare boxes has been moved to the underside of the stinger.
    Pastel RWR sensors are on tail fins. I think triangles on the stinger are jammers.

    Comment


      #42
      The Su-35S doesn't employ the 'Pastel'. It uses a more modern system designated L-150-35 and has much more advanced capabilities as an ELINT system (станции непосредственной радиотехнической разведки/СНРТР), than a mere RWR:

      https://www.google.co.jp/url?sa=t&so...uvUnO8xWBvJ0Ag

      A derivative (L-150-16M), marketed as an upgrade for Su-25SMs, even claims a capability to cue radar-guided AAMs:



      ...but I'm a tad sceptical on this last claim - even the mighty AN/ALR-94 needs the AN/APG-77 to cue radar homing AAMs!
      sigpic

      Comment


        #43
        Originally posted by Jō Asakura View Post
        The foremost singular aperture is a MAWS, and the adjacent twin aperture is a LWR:

        https://pp.vk.me/c633120/v633120542/...oTuFnrlZL4.jpg
        What does LWR stands for ?

        Comment


          #44
          L-150 is Pastel the following number is modification for specific use on a plattform. Pastel RWR were since a few years advertized as being accurate enough to cue ARHM on the source of the radar when designated as a target (narrow beam).

          Comment


            #45
            Originally posted by mikoyan View Post
            What does LWR stands for ?
            Laser warning receiver. Would be used to detect ground and air based laser targeting systems such as those from SAMs or laser range finders on aircraft.

            Comment


              #46
              Originally posted by Molnya View Post
              L-150 is Pastel the following number is modification for specific use on a plattform. Pastel RWR were since a few years advertized as being accurate enough to cue ARHM on the source of the radar when designated as a target (narrow beam).
              L-150-35 is most certainly NOT 'Pastel'. If the differences in the system components (pic in link above) aren't glaringly obvious, then GT this:

              http://www.dissercat.com/content/alg...-svch-signalov
              sigpic

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                #47
                Originally posted by Ozair View Post
                Laser warning receiver. Would be used to detect ground and air based laser targeting systems such as those from SAMs or laser range finders on aircraft.
                Is that relevant on a fighter? I've always thought that fighters would be either too fast or too high to care about laser guided anything...

                Comment


                  #48
                  Originally posted by MSphere View Post
                  Is that relevant on a fighter? I've always thought that fighters would be either too fast or too high to care about laser guided anything...
                  Plenty of fighters use laser range-finders with their IRST.

                  Comment


                    #49
                    Pretty significant news for Sukhoi- the 100th SSJ has flown.

                    http://bmpd.livejournal.com/1687161.html

                    It is the 95th serial air-frame, and the first for the Irish airline CityJet.
                    sigpic

                    Comment


                      #50
                      Originally posted by MSphere View Post
                      Is that relevant on a fighter? I've always thought that fighters would be either too fast or too high to care about laser guided anything...
                      Agree with what hopsalot stated. Range finders are present on a lot of fighter aircraft these days and so the LWR provides another source of passive warning to the pilot. For the ground based scenario, there are a few SAM systems with primary or secondary laser range finding or guidance and at some stage these aircraft will fly low enough or slow enough to make this an issue.

                      I'm not surprised to see this on the SU-35 as I thought I had seen a few previous Flanker variants with LWRs?

                      Comment


                        #51
                        Originally posted by Ozair View Post
                        Agree with what hopsalot stated. Range finders are present on a lot of fighter aircraft these days and so the LWR provides another source of passive warning to the pilot. For the ground based scenario, there are a few SAM systems with primary or secondary laser range finding or guidance and at some stage these aircraft will fly low enough or slow enough to make this an issue.
                        OK.. that would mean that even IRST guidance is not entirely passive..

                        Originally posted by Ozair View Post
                        I'm not surprised to see this on the SU-35 as I thought I had seen a few previous Flanker variants with LWRs?
                        I don't think any other Flanker variant had this.. Not even Chinese J-11s, AFAIK..

                        Comment


                          #52
                          Originally posted by MSphere View Post
                          OK.. that would mean that even IRST guidance is not entirely passive..
                          Passive until the laser range finder is used at which point, if the target aircraft has an LWR (which is not many), it would be noticed. The range finders overcome the IRST ranging issue but typically don't have a range over 20-30kms.
                          Originally posted by MSphere View Post
                          I don't think any other Flanker variant had this.. Not even Chinese J-11s, AFAIK..
                          Just found it, the Malaysian Su-30MKM has a LWR from Avitronics in South Africa although they refer to it as a sensor not a receiver...

                          For the Malaysian deal, Irkut was the main contractor, but canards, stabilizers and fins were manufactured by India’s HAL Nasik under a $25-30 million value subcontract, and India plays a role in helping the RMAF to maintain their fleet. The main difference between the MKI and MKM versions is the replacement of Indian and Israeli avionics, ECM (electronic counter-measures), and LITENING pods with Russian, French and South African equipment. This includes original Russian equipment, Thales of France’s HUD, NAVFLIR, and Damocles surveillance and targeting pod; Avitronics South Africa missile approach warning sensors and laser warning sensors. India’s SU-30MKI Mk3 is also be equipped with an on-board mechanical health-and-usage monitoring system (HUMS) from South Africa’s Aerospace Monitoring And Systems (Pty) Ltd (AMS), but there is no announced word on whether the Malaysian SU-30MKMs are equipped with a similar system.
                          http://www.defenseindustrydaily.com/...u30mkms-03336/

                          Comment


                            #53
                            With all the talk of extra Su-30SMs (certainly the airframe number will be higher than Su-35 before 2020) I sure hope they finally put LWR and MAWS on it...
                            sigpic

                            Comment


                              #54
                              Originally posted by Ozair View Post
                              Passive until the laser range finder is used at which point, if the target aircraft has an LWR (which is not many), it would be noticed. The range finders overcome the IRST ranging issue but typically don't have a range over 20-30kms.

                              Just found it, the Malaysian Su-30MKM has a LWR from Avitronics in South Africa although they refer to it as a sensor not a receiver...
                              Riiiight.. Stand corrected... I have never noticed that the MKM actually had two sensor suites by Avitronics - the MAW-300 (UV based MAWS) and the LWS-310 (laser warning sensors against GaAs, NdYag, shifted NdYag and Erbium Glass lasers)
                              Last edited by MSphere; 19th January 2016, 11:44.

                              Comment


                                #55
                                I had to scratch-build them on my Su-30MKM model....... the MAWS is in a multi-facetted 'turret' on the upper spine, behind the airbrake...



                                .... and on the underside in front of the nosewheel bay....



                                Note also the forward-facing LWS-310 next to the MAWS - the rear-facing ones are on the intake sides.

                                The finished model.......



                                .... next to its Indian cousin.....



                                Ken
                                Flanker Freak & Russian Aviation Enthusiast.
                                Flankers (& others) website at :-
                                http://flankers.co.uk/

                                Comment


                                  #56
                                  Brilliant builds, Ken.

                                  Regarding the MKM in general, I must say that I wish the VVS/VKS had a squadron of Su-30's in that scheme. Not that there is anything wrong in particular with the Russian affinity for colorful things, au contraire, but that sleek grey "western-ness" does look good on a Flanker.
                                  sigpic

                                  Comment


                                    #57
                                    Originally posted by TR1 View Post
                                    With all the talk of extra Su-30SMs (certainly the airframe number will be higher than Su-35 before 2020) I sure hope they finally put LWR and MAWS on it...
                                    Depend on contract, if those components will be included.

                                    Comment


                                      #58
                                      I doubt they will put Avitronics on them if they haven't already.. and integrtaion of the domestic LWS and MAWS found on the Su-35S would be quite costly..

                                      Comment


                                        #59
                                        Video from 8'th June 2015;

                                        https://www.youtube.com/watch?v=qtqYAv5xyTg

                                        One died on the spot, one died two months later (75% burns...) and 3-4 didnt get any injuries apparently.

                                        Comment


                                          #60
                                          Originally posted by Berkut View Post
                                          Video from 8'th June 2015;

                                          https://www.youtube.com/watch?v=qtqYAv5xyTg

                                          One died on the spot, one died two months later (75% burns...) and 3-4 didnt get any injuries apparently.
                                          R.I.P. to the deceased... But, pardon me for sounding insensitive but this was a rather bizarre incident - a positively massive engine failure - and that's the most"interesting" part if you will. The mighty NK-12 has proven itself incredibly reliable over its 50+ years of service, so what exactly was the cause of this apparent cascade of sudden failures? Engine suddenly blows up (?!), fuel tanks are ruptured and boom - you got yourself a fireball. Horrific to say the least... I do want to see the results of the investigation though... That kind of thing just doesn't happen from out of nowhere.
                                          sigpic

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