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RuAF News and development Thread part 15

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  • bring_it_on
    2005-year of the RAPTOR!!
    • Jun 2004
    • 12480

    Well if it can bring the capacity it would be nice.
    Prototype embedded cooling solutions (propylene glycol and water flow at 700+ kPA) with GaN on SiC have demonstrated as high as 1.2kW/cm^2 die-level and 30kW/cm^2 transistor-level heat flux respectively. I believe the current capability may be something even better as this was from a few years ago.

    http://www.aviationtoday.com/2015/10...f-power-chips/
    Attached Files
    Last edited by bring_it_on; 22nd January 2018, 13:08.
    Old radar types never die; they just phased array

    Comment

    • Marcellogo
      Rank 5 Registered User
      • Jun 2014
      • 1822

      Thank Dr. Snuffelburg.
      So something more apt to a weapon than to a plane.

      Comment

      • TR1
        TR1
        http://tiny.cc/tp8kd
        • Oct 2010
        • 9804

        https://bmpd.livejournal.com/3061457.html

        Myanmar buying 6 Su-30SME.
        sigpic

        Comment

        • Dr.Snufflebug
          Boggleboople snufflebug
          • Aug 2012
          • 519

          Originally posted by Marcellogo
          Thank Dr. Snuffelburg.
          So something more apt to a weapon than to a plane.
          Perhaps the most relevant application of such a propulsion system is found in spaceflight and things like SSTO.
          sigpic

          Comment

          • TomcatViP
            Rank 5 Registered User
            • Nov 2011
            • 6001

            The rotation is there to keep track of the compression shock waves. Imagine them as simple blades.

            Comment

            • Inst
              Rank 5 Registered User
              • Apr 2009
              • 186

              I'm curious: where did the 400 km Irbis-E figure come from? I note that the official Irbis-E range is 350 km vs 3 m^2, from the manufacturer's website, yet the 400 km figure gets repeated constantly. What's the original source here?

              Comment

              • MSphere
                Senior Member
                • Feb 2010
                • 8983

                0:19

                Comment

                • Inst
                  Rank 5 Registered User
                  • Apr 2009
                  • 186

                  Is that the only claim? I mean, you can't tell where the 3 m^2 object is, it could be 300, it could be 200, it could be 500 km relative to this graph.

                  As to the 350 km figure, check this out:

                  http://www.niip.ru/catalog/aviatsion...ie/rlsu-irbis/
                  Last edited by Inst; 23rd January 2018, 15:38.

                  Comment

                  • JSR
                    JSR
                    Rank 5 Registered User
                    • Aug 2011
                    • 4950

                    niip always understand there ranges. The BARS radar range is still only 140km presumably from 1990s. Malaysian specialist consider BARS longer range than APG-73 which they evaluated in early 2000. Irbis built in 2018 should have atleast 1000km range.
                    http://www.niip.ru/catalog/aviatsion...nie/rlsu-bars/
                    Air-Air mode ":
                    the detection range type fighter MiG-29 in area of 300 m2 review. hail:
                    -on a collision course-up to 140 km;
                    -on dogonnyh courses-up to 60 km.
                    They are not just making the aircraft bigger. latest MIG-29 has bigger cockpit and nose, 50% greater range and over 6 ton payload and that decreasing the overall weight. this will give you idea of tough engineering requriements for entering new product into Ruaf. I am sure the final MIG35 will fully exploit the ultra long range missiles.
                    http://www.janes.com/article/71714/p...h-gen-fighters
                    As noted by Chernov, the MiG-35 has greatly expanded the use of composites, which appeared sparingly in the MiG-29, comprising up to 15% of the total materials content in the aircraft. This, in turn, has made the overall empty weight of the aircraft far less than its original design, which allows the MiG-35 to carry six additional tonnes of payload

                    Comment

                    • haavarla
                      Rank 5 Registered User
                      • Dec 2008
                      • 6647

                      Warning! Cancer post above^^..

                      Obviously the 400km claim is on a large sea target. A large one, like a Carrier, cargo or tanker. And it would also have to be optimal weather conditions.

                      Its an advs made by UAC or Sukhoi i think. Its a "official" claim in that regard
                      Last edited by haavarla; 23rd January 2018, 18:43.
                      Thanks

                      Comment

                      • stealthflanker
                        Rank 5 Registered User
                        • Sep 2015
                        • 1006

                        Originally posted by Inst

                        Is that the only claim? I mean, you can't tell where the 3 m^2 object is, it could be 300, it could be 200, it could be 500 km relative to this graph.

                        As to the 350 km figure, check this out:

                        http://www.niip.ru/catalog/aviatsion...ie/rlsu-irbis/
                        Back in 2005 date Irbis already been claimed at 350-400 Km range. The exact detection range would of course vary according to environment and target dynamics. If you familiar with concept of detection probability, you would understand.

                        Let's have some image based on its radar screen shall we.
                        https://www.youtube.com/watch?time_c...&v=cieLN4_tn0A

                        The Target is indeed detected in 268 km but notice the range scale at left.

                        Click image for larger version

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                        That alone clearly show Irbis is indeed instrumented to detect target at 400 Km.


                        Originally posted by Haavarla
                        Warning! Cancer post above^^..

                        Obviously the 400km claim is on a large sea target. A large one, like a Carrier, cargo or tanker. And it would also have to be optimal weather conditions.

                        Its an advs made by UAC or Sukhoi i think. Its a "official" claim in that regard
                        Do you know that radar detection range is more like statistical in nature ? Even with same RCS same weather condition.. you may not really detect same target at same distance. There was a time when it really capable of detecting the target in its maximum instrumented range (400 km) But there are also times when it do less like 350 or 300 Km. and all can happen in 1 day. Which is why we have so called "R50" or "R90" and why NIIP put detection probability in their page.

                        Be free to be skeptical. But please be informed. Given the RU MOD already specified 3 sqm as their requirement and they do accept Irbis in Service. The radar must have been able to do its job.
                        Last edited by stealthflanker; 23rd January 2018, 22:15.

                        Comment

                        • El_Indigo
                          Rank 5 Registered User
                          • Jul 2006
                          • 287

                          Click image for larger version

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Views:	1
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ID:	3678678

                          Comment

                          • Inst
                            Rank 5 Registered User
                            • Apr 2009
                            • 186

                            You have to understand, the claim is 3 m^2 detection range, when tankers, AEW&C, and bombers can easily hit 20 m^2 and thus be detected at a longer distance. The ground-based target in the other video is a bleeding 50,000 m^2 warship, for christ's sake.

                            Comment

                            • haavarla
                              Rank 5 Registered User
                              • Dec 2008
                              • 6647

                              Stealth@
                              Yes i know that when a radar radiate towards a ground target there is limitations.. like ground clutter/noise. That is why i said "optimal weather conditions". And yes a 50000m2 size target may be doable at 400km range.

                              I know all about background clutter/noise on radar. Well maritime radar.. it my job. And i can tell you the amazing improved generation radar over the last 25 years.. the care free handling today with automatics noise filter reduction made possible with new digitale inovations. It is just world apart from the older generation radars where you had to adjust the noise level on a semi autority way.

                              All this makes me think about the AGP-77 Architecture is long in the thooth by now..
                              Thanks

                              Comment

                              • JSR
                                JSR
                                Rank 5 Registered User
                                • Aug 2011
                                • 4950

                                I am not sure why some one worked out on radar technology. when it is practically understood that almost ever Su-35/Su-30SM/Su-34 carries big pods on wings.
                                it is the defensive suite that is number one criteria for strong performance in high intensity combat.
                                http://uacrussia.ru/en/investors/pre...rebitel-mig-35
                                Yury Slyusar reported to the President of Russian Federation that the new MiG-35 fighter was designed specially to perform combat activities in areas of high intensity conflicts, in high density air defences. Strong performance is achieved due to new defence suite, new opto-location station and reduced radar cross section signature

                                Comment

                                • stealthflanker
                                  Rank 5 Registered User
                                  • Sep 2015
                                  • 1006

                                  Originally posted by Inst
                                  You have to understand, the claim is 3 m^2 detection range, when tankers, AEW&C, and bombers can easily hit 20 m^2 and thus be detected at a longer distance. The ground-based target in the other video is a bleeding 50,000 m^2 warship, for christ's sake
                                  How about trying to understand concept of "Maximum Instrumented Range"

                                  There is a reason for a range scale knob or buttons you can find in every fighter radar panels. You know that there is a range where the designer deliberately put it as "Max" regardless of power aperture product.

                                  Originally posted by Haavarla
                                  Stealth@
                                  Yes i know that when a radar radiate towards a ground target there is limitations.. like ground clutter/noise. That is why i said "optimal weather conditions". And yes a 50000m2 size target may be doable at 400km range.
                                  Well im specifically address the 3 sqm. Ideal condition yes.. but to think that it's not capable of doing the stated range is not really a wise thought.

                                  Comment

                                  • Austin
                                    Rank 5 Registered User
                                    • Oct 2003
                                    • 6463

                                    Interview with Tactical Missile Bureau chief Boris Viktorovich developer of Kh-101 Cruise Missile

                                    https://vpk.name/news/204600_raketyi...cheloveka.html

                                    - What can you say about your new cruise missile X-101?


                                    - Vladimir Putin spoke highly of her. I consider X-101 the best weapon from the whole class of the KR. It has unsurpassed characteristics in range, speed, accuracy. Today no one has a weapon equal to this. The X-101 has excellent selectivity in choosing the target. After all, we "work" not by area, but by pre-selected objects of great strategic importance. The range of its action was previously impossible to imagine, and now - reality. The missile flies, taking into account the terrain, and at that distance itself finds the intended target.

                                    X-101, of course, has its own highlights and secrets. It has an original, very complex inertial guidance system, which allows you to accurately calculate the location in space, even without seeing the goal. She herself multiplies the speed for a while and roughly knows how many flown in which direction. But this is not enough. To get, as they say, in the window, you need to link to the terrain, perfect Doppler sensors, altimeters, good maps. Moreover, let's say, in the summer, the real picture is one, and in winter, under the snow cover, it can be different, but in any case it must correspond to what is stored in the memory card. Even GPS and GLONASS for X-101 are secondary, it can do without them.
                                    "A map does you no good if you don't know where you are"

                                    Comment

                                    • Austin
                                      Rank 5 Registered User
                                      • Oct 2003
                                      • 6463

                                      Russian Air Force procurement plans

                                      https://russiamil.wordpress.com/2018...ement-plans-2/
                                      "A map does you no good if you don't know where you are"

                                      Comment

                                      • meme expert
                                        Rank 4 Registered User
                                        • Sep 2017
                                        • 45

                                        remember that when speaking about the Irbis E's 400 km range vs 3sqm , we are speaking about the range in track while scan mode.
                                        And as far as i thnik , radars may acheive their maximum range potential in velocity search mode , ive seen articles claiming that range in velocity search can be much longer than TWS. So maybe the Irbis E could go further than 400 km in such a mode , for 3m2.

                                        Comment

                                        • TR1
                                          TR1
                                          http://tiny.cc/tp8kd
                                          • Oct 2010
                                          • 9804

                                          The new Tu-160M is painted, and has already flown late last year.

                                          sigpic

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