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Nick_76

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Viewing 15 posts - 826 through 840 (of 2,296 total)
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  • Nick_76
    Participant

    Jack– if thats your work, thats a fine piece of writing, that is.

    Its a darn credit to have you onboard at AFM even if we are debating. 🙂

    in reply to: IAF news-discussion July-September 2007 #2524397
    Nick_76
    Participant

    Poster Amit@ Skyscraper city forums:

    I attended, and presented a paper, at the Hypersonics conference (Hyderabad) inaugrated by Dr. APJ Abdul Kalam. It was a wonderful experience to have seen & heard the most popular president in the history of India. The media was all over the place to cover Kalam’s speech. Security was extremly tight, no cameras were allowed as long as Kalam was at the conference venue (Hotel Taj Krishna). Only after he left, could I take pictures.

    Invited lectures were given by top scientists from India & abroad. Among them were Dr. Suresh (Director VSSC), Dr. Adimoorty (Deputy Director VSSC), Dr. Saraswat (Chief Controller DRDO), Mr. Venugopal (Director DRDL) & Dr. Paneerselvam (Deputy Director DRDL). Dr. Anil Kakodkar (Chairman Atomic Energy Commission), Mr. Natrajan (Scientific Advisor to Defense Ministry) & Mr. Itzhak Nissan (President & CEO Israel Aircraft Industries) were present at the inaugration ceremony. It was a star studded event

    Even more impressive was the truly ambitious nature of hypersonics programs being pursued by ISRO & DRDO. Instead of writing in words, I will upload pictures that describe these programs very well.

    Both ISRO & DRDO are building truly world class experimental facilities to support these ambitious hypersonics programs. Most notable among them are TWO 1 m diameter hypersonic wind tunnels, capable of testing for Mach 5-12 airflow. As a person with experimental background, the scale of these facilities is mind-boggling for me, I just cannot get over it! Airflow through the wind tunnel is 300 kg/s, the entire complex will occupy 150 m length, and the vaccum chamber in which it will discharge air will be 17 m in diameter!

    Only 8 hypersonic wind tunnels of this scale exist worldwide. These include 3 in USA, 3 in Russia, 1 in Japan, and 1 in France. Now India will have 2 such wind tunnels. ISRO’s hypersonic wind tunnel is already under construction in VSSC.

    Besides the 2 major hypersonic wind tunnels, DRDO is building a 1 m diameter shock tunnel for Mach 5-12. This is also a MAJOR experimental facility. However, wind tunnels are better (and more expensive) than shock tunnels since they provide much higher run times (20-40 sec vs a few milli-sec).

    ISRO-NAL & DRDO are building 2 major blow down wind tunnels for testing scramjet engines with flow rates of 25-30 kg/s.

    A plasma tunnel (6 MW) is being built (by ISRO?) to test high temperature materials required for building a hypersonic aircraft.

    That is a total of SIX major wind tunnels of various types.

    I repeat.. having an experimental background, I am really blown away by the scale of experimental facilities being built by ISRO & DRDO. And this is not a layman’s opinion.

    http://www.skyscrapercity.com/showthread.php?t=434074&page=6

    in reply to: PLA (All Forces) Missiles #1795868
    Nick_76
    Participant

    Go through the same motions and you will soon reach the conclusion that the Chinese ASAT test could not possibly have happened either. Its time to dispense with the old rules and face the new reality.

    Whats the big deal in the ASAT test? Half a dozen countries could have done it, can do it, but wont, its akin to a merge test! And it was long known that the PRC could get to it, after it demonstrated its launch capability.

    Fact: PRC ASAT test happened and it was a success. Lets draw from that what we can.

    The ASAT has little to do with this. This is exponentially harder!

    Thermal bloom? Must have been solved or bypassed, there is the PershingII precedent so its far from impossible, and technology has moved on a great deal since then.

    “Must have”? Wheres the maneuvering independent kill system to engage a ship then? Remember, I am not talking of the ASAT but the AShBM here.

    MC? Must have been done. The alternative is that the Chinese decided that they wanted a missile to fly through a <3m2 spot in orbit and sent a missile through that spot without any midcourse adjustments to take into account the unaccountable factors of wind, atmospheric pressure, fuel mix impurities, missile manufacture and a million other things that might make a rocket fly the most minute bit less straight then a laser beam and for outside factors to not change the course of that huge missile just a tiny bit. Because that is what you are suggesting with no MC.

    Again, I was referring to the MC for the target sat being unviable on account of it not being able to conduct any elaborate maneuvers to throw off the incoming ASAT. You are misreading my comments.

    Is it more plausable that the Chinese are able to make the perfect missile that will not err from the course of a lazer beam and they were able to factor in and accurately calculate every possible outside factor that might affect the course of a missile; or is it more likely that the Chinese were able to guide a normal missile to fly through a <3m2 spot in orbit?

    Look above.

    You know what, it doesn’t really matter in this case, because whatever means the PRC used to hit a sat in space, it can use to hit a ship on earth. Of course there will be challenges to adapt the technology and make it all work, but those are finishing touches compared to what has already been achieved.

    Thoroughy wrong conclusion. The latter is far harder. Since ships dont move in predictable motions and can make a variety of moves ..and the reaction time for the incoming missile to detect and engage via changing its own trajectory is miniscule.

    That is a baseless assumption. Or do you know the details of the PLA ASAT test? Do you know for a fact that speed and entry(or exit in this case) profile will have to be specially restricted?

    Baseless? Are you even aware of re-entry speeds for BMs? Please look them up and come back and then talk of the topic please.

    Again, old excuses. Fact is the PRC has already demonstrated that it has this technolgy. Because for that test to have been successful, the lion share of the work would have been already done and the money spent. This is not some new technology that the PRC are just starting to try their hands at, they have already mastered it, and all that remains is application, if that.

    What technology which technology? We are talking of the AShBM not, the ASAT here. Please dont conflate the two.

    Now, having already developed the technology, do you think it more likely that the PLA try and apply it in as many fields as possible or just pat the engineers on the back, say, ‘good job lads, not lets pack it all up and start something else’?

    Look above.

    So…I must ask again, what is this based on? And what makes you think that the PLA has to choose between new AShMs or ASBMs?

    Cost effectiveness based on the issues involved in developing a functional AShBM.

    If there has to be a choice, I think its clear that the PLA has chosen and it aint a super AShM. An ASBM programme would explain a great many things that have been quite puzzling about PLAN. For example, why the PLAN is only making modest improvements to its AShM programme and does not seem overly keen on jumping on the ‘biggest meanest fastest missile’ bandwagon and trying to either negoticate a supersonic AShM partnership with the Russians or to just licensing copies of stuff they already have. China is making the Kh31P after all.

    Where is it clear? Dime a dozen pictures of new H series CM carriers. New AShMs in plenty. But not a single picture of any AShBM bar scare reports in US journals. How is it clear as to what the PRC has chosen?

    Instead, their latest AShM is more akin to the anti-ship version of the tomahawk, with range being prefered to speed, but more importantly very inexpansive as the vast majority of the work would have been covered by the cruise missile programme, and all that remained was adapt a cruise missile to hit a ship. How much do you reckon that would have set them back?

    Dont get what you are saying here.

    The problem with AShMs is that its almost a dead end path. Everyone who consider themselves someone in the naval world could now handle wave upon wave of AShMs, sub or even supersonic, as many claim. Of all the weapon systems of a warship, how many are now dedicated to stopping AShMs? Every improvement in one field is almost immediately countered by innovations in the other. Its a classic example of an arms race that will never produce a true victor. So why get stuck in that vicious circle if you have another choice?

    Good point, but if the “other option” is ludicrously blue sky, then go for the tried and tested method. And options like the Sizzler and Brahmos are hard to defend against. The PRC can develop equivalents at far lesser cost and with more rapidity than with a magic AShBM.

    Why would you have to send wave after wave of your best fighters against equally, or even better equiped and/or trained enemy fighters to deliver a few AShMs that will most likely get shot down when you can just sit back and fire wave after wave of ASBMs from the safety of your own home, that are proof against all the defenses of the enemy fleet and could kill even a carrier with a single hit? To go down your path is to embark on a war of attrition the PRC is extremely unlikely to win, and even if they do win, the price would have been vastly higher then any ASBM project. And that is just the money, many many lives would also have to be sacrificed. Doesn’t seem like such a bad deal now does it?

    Why fighters? Send H-8s screened by fighters, launching from 500-700km away. Good enough.

    Sure, for every action there is going to be a reaction, and in time, everyone might one day be able to counter ASBMs as easily as they could handle subsonics today. But that day is a very long way from now, and in the meanwhile, the PLAN will have a huge advantage over everyone else. If China has an operational ASBM, then it would have made every warship in service or on the drawing boards obsolete overnight. That is the reward for secrecy. Your enemies cannot counter what they do not know about.

    I think you are hoping for an AShBM capability as pointing out a definite proof of PRC having one. If you do have it, please show the same and I’ll be glad to be corrected.

    in reply to: Russia's MiG-31's #2524715
    Nick_76
    Participant

    Yes, but Russians don’t seem to be too busy with AESA technology. They have couple of flyable sets, like Zhuk-AE demonstrated on MiG-35, but N035 is slated for the first radar of I-21.

    Dont ever take the Russian statements at 100% value..they need to sell their products after all and change tack later. 😉
    All those days of decrying stealth, but then developing the PAK-FA themselves. In this case, NIIP is the lead developer for AESA for the PAK-FA, and has proposed an AESA to the IAF as well. Zhuk-AE may appear to be ahead, but am sure that NIIP hasnt been sitting idle either. BTW, even the Vega A-50U has been proposed to be upgraded with AESA.

    Irbis-E’s numbers are impressive…nothing short of AESA radars. Distance vs 3m2 RCS in ideal head on up to 400 km, for stealth 0.01m2 RCS 90 km. Tracks 30 targets, can lock-on to two at once for SARH operations, and can do eight in TWS, four at enormeous distances > 300 km for R-72 ops. And so on, im sure you know the Irbis-E datasheet. AESA brings a lot of maintenance advantages, but N035, which should be couple of percent more powerful than N035-E for which we have public figures, is a masterpiece radar itself.

    This E business is for public consumption imo. But if we talk to folks in the business, Russian firms are basically exporting items which are not even in service at home, and nor is the lag between external items and russian ones so large that they can fit in an export variant in between and still meet customer demands. Eg if Russia were to offer a downgraded N035E, versus a full spec N035, India would seriously evaluate offers from SELEX and ELTA or codevelopment methods to come up with a more potent system. Thats the way its happening.
    AESA not only brings maint advantages, but a true AESA implementation from the ground up, like the APG-77 can actually implement a variety of LPI and wideband power management options.

    Indians wouldn’t be stupid if they accepted original N035 for MLU, and wait for Russia to develop AESA radars that have more performance than their PESA radars. For now, Zhuk-AE with ~ 800 elements (figure from head, approx), just cannot match the performance of Zaslon, let alone of Irbis.

    Well, I dont know whether India will procure three radars. IMO, it will be just two Bars- as of now, followed by a MLU, for the last few years of production, from 2012 onwards..

    It’s unmatched. For those that need it. Even F-22 in supercruise regime cannot match the speed and range of MiG-31 in it’s wet supersonic cruise. India should be happy with MKI’s, true multirole aircraft, just like you mentioned, every Flanker has the courtesy to keep up the burners while it’s 4+ gen counterparts are already running on fumes. Big aircraft, lots of fuel. MiG-31, on the other hand, will always remain an Mach 2.5+ strategic superinterceptor, the upgrades on Zaslon DSPs and FCS could bring an A2G option or two, but it’s a far cry from the MKI multirole capability.Specialized aircraft. Those that need something that’ll go 1500 km’s on Mach 2.35 and shoot on everything that comes close to 150 km of it, MiG-31 is the right choice. For anything other, Su-30MK(x) is the way to go.

    Can you provide more figures on the supersonic range and weaponry carried, speeds etc?
    The reason why the IAF didnt take up the Russians on the MiG-31 aspect was on account of its horrendous maintenance requirements. 🙁

    Nick_76
    Participant

    The 20 Su-30 aircrew included “Wing Commander A K Bharti, the Commanding Officer of No.30 Sqn. and his Flight Commanders, Wing Commanders Asit and Assudani” as well as one Wg Cdr A C Chopra

    .

    AC Chopra was not Su-30 flight crew, nor did he fly in ID.

    in reply to: Russia's MiG-31's #2524891
    Nick_76
    Participant

    The 90 km vs 0.01m2 is for N035-E, export version of Irbis radar system. Add couple of % more for domestic N035.

    For exports to the PRC, perhaps- if we go by the N001V example. But for India etc, this isnt an option, because the Indian side will insist on best in the class performance, and detailed access to the source code and hardware. Based on the way the wind is blowing, I anticipate an AESA MLU for the MKI, and only if that doesnt work out, the N035.

    in reply to: Russia's MiG-31's #2524899
    Nick_76
    Participant

    I wouldn’t doubt the export of MiG-31B/BS to any corner of the world would destabilize the surrounding continent. I don’t feel the Su-30MKI is even in the same class. The MiG-31 can – like its predecessor – slash attack and retreat in ways that cannot be countered with lesser craft. The MiG-25P proved omnipotent when used in these tactics.

    I wouldnt be too sure about that. In a decades time, when the MRCAs come into IAF service, the Indians will be more open about the capabilities of the MKI, and several features of its avionics and planned improvements match or are even better than the MiG-31s. But otoh, the basic supersonic + range combination of the MiG-31 is hard to match. But for short intense BVR battles, the MKI has the fuel and the legs to engage, disengage, even with the use of ‘burner.

    in reply to: IAF news-discussion July-September 2007 #2524902
    Nick_76
    Participant

    http://www.hal-india.com/MinskSquareMatters-Issue35.pdf
    Su-30 RESTS HERE

    S.K. Singh, Chief Manager,
    Su-30 Hydraulics

    Lucknow, July 23: The Su-30 hydraulics
    department is part of the Mechanical factory
    of the Division, which has also the
    instruments and fuel factories.
    The Mechanical factory handles mainly
    hydraulics like undercarriages, wheels
    and brake systems, ejection seats. Besides
    these, environmental control systems like
    air pressurization in the cockpit, cooling
    equipment, etc., and flight control systems
    are also taken care of in the department.
    Before the Sukhoi project was shifted to
    this facility, the department handled
    work on the Jaguar, Mirage, MiGs, Sea
    Harrier and HPT-32 among a few other
    aircraft.
    The latest addition to the department’s
    wide range of products is hydraulic hose
    and all kinds of adaptors that go with it.
    Facilities are available to test hoses at
    even 10,000 psi.
    The flight control systems are all fly by
    wire systems that are extremely technologically
    advanced. There are not less
    than 20,000 components in the Su-30’s
    hydraulics and the Division handles 64
    units for an entire Su-30. A total of 87
    items are made at the Division. The
    Sukhoi, presently in Phase II (sub assembly)
    is a good aircraft in terms of maintainability.
    Phase III, which involves complete
    knock down kit will start this year.
    Since the IAF requires the aircraft within
    2013-14, unlike the earlier deadline of 2016,
    work is on full swing at the department.

    Nick_76
    Participant

    Jack, you have to be kidding, or you dont use the term SA as the rest of the world uses it.

    Can you show ONE other aircraft with the equivalent of DAS, ie staring array latest gen IR sources covering the full 360, more or less?

    And frankly, this “FALSE – the brief was to equal the F-16, and according to independent sources, that’s all it does.” is a ludicrous statement.

    If you think that LM, will comfort itself by setting low benchmarks you are mistaken. The USAF will expect them to do better and they have the experience and ability to pull it off.

    ” 3 gen. AESA radar By the time it enters service, so will everything else.”

    Really? And what makes you think that the US wont go one up to another iterative improvement then, perhaps even to GaN modules?

    The US has several families of AESA FCRs in service. Today. How many do other countries field? That experience, that level of funding counts for a lot.

    Care to show one APG-77 equivalent from Europe?

    Naval systems are a different matter- but that experience and ability does not directly translate to FCRs for fighters. Not without massive and sustained funding.

    in reply to: PLA (All Forces) Missiles #1796022
    Nick_76
    Participant

    How long does it take a M6+ projectile to descend from orbit? How much distance can a warship cover in that time? And that is not taking into account the very likely mid-course adjustments made by the missile to counter the movment of the ship.

    Exactly! Now we are getting somewhere. Calculate a minor trajectory error (common to all reentry warheads btw) and also calculate the issue of seeker thermal bloom. You’ll quickly rule out MC adjustments then, there quite simply isnt enough time.

    As for hardkill, well the naval TMD was designed to target missiles in ascent phase of flight, not descent, and its kill ratio is highly questionable even against a single missile. Against a salvo and there is not realistic chance.

    The entire point is that if the PRC goes this path, it will have to develop self deploying payloads. And they, for acquisition performance, will have to be more contained in terms of speed and entry profile. That is something the US can factor in and defend itself from. A ship is not as volume limited as a missile, and can technically carry a lot of gear directed toward this threat.

    Its the sum total of wasted effort, manhours, technology and cost which makes me believe that the PRC wont waste time & energy on something so “outre”.

    Instead I think the PRC is investing in network centricity, as limited as it may be, but sufficient for its purposes. And new AShMs and carrier platforms. I wouldnt be surprised if a Klub Supersonic, equivalent is being developed by the PRC, either with assistance or without. That combined with a multitude of launch platforms, especially the newer Kilos would make any USN commander think twice and be more conservative in deployment. That and many BVR carriers and long range sensors to acquire and whittle down USN carrier CAPs.
    Its not perfect, but its a long range plan and achievable to some extent. Of course the USN will take countermeasures and so the game goes on..:)

    Nick_76
    Participant

    True Nick 76, it clearly was intended as a test program for a future aircraft but Bae couldn’t ignore the success of the test program. Considering the EAP used off the shelf assemblies from the Tornado program there certainly would of been cost savings in the development process.

    Well sure, but unless there is a clear cut aim to make a fighter out of it, whats the point. See, as far as I know the EAP was intended to research tech for the follow on to the ACA which was then named the EF. From a commercial POV, I guess the BAe guys would have been worried that an EAP project could have cannibalized the market share from the EF, not to mention the perils of conducting two aircraft projects simultaneously, while your partners wonder whats on.

    Nick_76
    Participant

    The point of contention is this:
    .

    Yada yada yada… oh c’mon!!

    Saying the same thing over and over again, whats it adding?

    Unless you can prove that on day 1, the IAFs young uns did not take on the RAFs more experienced types in the 1 vs 1’s, ….all you are doing is adding to the noise.

    Whats with you two anyway? Why take unecessary inferences from something so straightforward? It cant be any clearer that the press release refers ONLY to day 1, and that too the 1 vs 1’s at the opening!!

    But you are insisting on extrapolating it to the entire exercise even though the press release makes it clear that only the 1 vs 1’s had occurred at the point of time, that too on day 1!

    Its as if you are spoiling for a fight, just because there isnt anything overwhelmingly controversial from the exercise. Bloody sad, really. :confused:

    in reply to: Iranian Su-30MK deal – up to 250 aircraft? #2526263
    Nick_76
    Participant

    The Su-30 MKK as sold to Venezuala could be a choice, but the Iranian AF is very picky and may regard this a/c WCS as being qualitatively inferior to its F-14s.

    in reply to: Iranian Su-30MK deal – up to 250 aircraft? #2526264
    Nick_76
    Participant

    250 MKI equivalents, when India with a booming economy is calling it quits @ 230, and that too with a high local content (hence keeping spares costs reasonable and supply obtainable)?

    Not bloody likely.

    I think Av Leak mis- hit this one.

    Nick_76
    Participant

    Looks aside the EAP shares virtually nothing with the Eurofighter, on the other hand it shares a lot with the Tornado. The rear fusealage and engines are off the Tornado.

    When it comes to EAP I must admit to thinking “what if?” Bae Systems did push the idea to the RAF of going it alone with a development of the EAP. The government didn’t want to go through the cost of developing a fighter on their own, in retrospect maybe a mistake.

    The EAP test pilots certainly liked it, one of them described it as a “Ferret with a firework up its bum!”

    I always thought that the EAP was more of a hands on experience to develop the EF Typhoon kind of project, and not really meant to field a workable fighter for commercial success. :confused:

Viewing 15 posts - 826 through 840 (of 2,296 total)