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TinWing

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Viewing 15 posts - 406 through 420 (of 720 total)
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  • in reply to: Joint Russian/ Italian submarine #2082766
    TinWing
    Participant

    So? We already knew they were working on it. Russia has some more export sub designs underway of its own, namely, Piranya-T, Piranya-2, Project550 (P550), P650B,P650E, P750 etc. Of which P750B and E have a displacement of 920t, with main difference between the two being a closed cycle diesel engine for B and an AIP based on chemical oxygen-hydrogen (and of course batteries in both along with a diesel). E is also 1.5m longer, which is caused by the engine lay-out as its the only difference between the two. Other versions are smaller and lack the 4 cruisemissiles of P750. All versions have 4 533mm tubes and 8 400mm torpedoes. They can carry 12 mines in minedispencers, but for P750 it can end up with 24 mines.

    I wonder how much this model resembles 750… Any pictures of the S1000 model? Here is some stuff to compare, no time to throw the rest in though.

    The Piranya submarine proposals are not from the Rubin design bureau, but from the Malakhit naval design bureau.

    The Piranya designs are not related to the Lada/Amur or any Fincantieri design.

    I do think that these designs are very interesting and are potential competitors for the Amur 950 and this collaborative S1000. The only question is whether there is an export market for submarines that are this small?

    in reply to: China wants to buy Rafales for it's fleet of carriers? #2082920
    TinWing
    Participant

    Without a catipult, the combat load of flankers or any other type of fighter operating off of the Varyag would be pretty limited, and thus are their combat potential and usefulness.

    I guess you would condemn the future Indian ADS with its MiG-29Ks because it is STOBAR as well?

    To be sure, CATOBAR is the most capable and costly solution to carrier aviation. The Russians considered and developed catapult technology for years, and might have finally fielded steam catapults in the early to mid 90s… if the Soviet Union hadn’t collapsed.

    There is also the ‘small’ issue of mission. The PLAN’s current objectives are located close enough to the Chinese mainland to be able to count on land based combat air support for pretty much any kind of combat mission the PLAN is likely to face.

    This means that it would make far more sense to have the Varyag carry helos for fleet AEW and ASuW duties.

    As for the costs of the radar and missiles, well if they are going to make the Varyag operational again, its going to cost a heap of money anyways, and its not like they are just going to stuff engines into her and call it a day. Radar, C&C, missiles, CIWS etc will all be installed anyways, and while four phase arrays are going to be a hell of alot more expensive the a Chinese verson of Top-plate and all the other radars needed, it’ll give a pretty huge leap in capabilities in return.

    I’d be extremely suprised if the PLAN is willing to spend so much money just for a training tool, when,
    a) they have a huge number of critially important projects ongoing right now that all need lots of money (051C, 052C, 054A, SSN, SSBN, Song SSK, Yuan SSK, stealthy FACs etc), and so there is very little reason to skim much needed funds from them to just make a training tool that is not even needed right now.
    b) even with all its new DDGs and FFGs, the PLAN is still pretty light in air-defence and its ASuW can always use some beefing up. However, with Chinese yards having already filled their order books for years to come, the PLAN might very well not be getting the ships it wants fast enough (eg, second batch Sov order). If they are going to make the Varyag sea-worthy again, they might as well spend a little bit more to make her truely useful.

    Its also not like the Varyag will need major strutural changes, as the ship was designed to take a great many VLS AShMs. They would just need to be replaced with VLS SAMs, and the fighter carrying capacity of the carrier would remain largely unchanged.

    I am not suggesting that the PLAN is thinking of completely re-making her into a supercruise that just happens to be able to carry fighters, but merely the kind of upgrades the PLAN is likely to make to her so that she can play a bigger role then just training, to justify her cost.

    Assuming that the Chinese could put the ex-Varyag to sea, under here own power, making her original design speed, she would be a very useful vessel indeed.

    Of course, the effectiveness of a carrier largely depends on her airgroup and history has shown that defensive weaponry alone isn’t sufficient to protect a carrier.

    A Top Plate radar and 3 or 4 30mm CIWS systems would be sufficient. Moreover, the Chinese would be well advised to reduce the size of the island and plate over the intended positions of the VLS cells.

    China’s escort program is already quite impressive, both in terms of build rate and technology. The last thing they would need is to swamp a potential carrier program with unneccessary purchases of radar and weapons systems….assuming China indeed has an active carrier program?

    in reply to: China wants to buy Rafales for it's fleet of carriers? #2083020
    TinWing
    Participant

    I also beleive that the Varyag, if restored and put into survice, will function primarily as a training carrier and might just double up as an air defence super-heavy cruiser with 052C style radar and lots of VLS HHQ9s. The ship could also act as a helo carrier, and if pressed into combat, that is the role I see it performing instead of acting like a conventional fixed wing carrier.

    Assuming that the ex-Varyag ever gets under way under her own power, there is no reason why she couldn’t operate in the same way her Russian sister ship does?

    Why would China upgrade ex-Varyag with expensive radar and missile systems? Such a move would be expensive and pointless, as would operating Varyag solely as a helicopter carrier. The entire concept of a aircraft carrying “cruiser” has been discredited. Even the Soviets realized this concept was faulty and planned to remove most of the weapons from the Kievs in favor of more deskspace for the Yak-41.

    If Varyag ever goes to sea again it will be with far less armament than originally envisioned by the Soviets.

    in reply to: SM-3 evolution plan. #1806244
    TinWing
    Participant

    Sferrin, thanks.

    I never realized the scope of the Navy’s anti-ballistic missile program.

    in reply to: A new look for HMS Ark Royal ! #2083791
    TinWing
    Participant

    What is in the large, round radome atop Ark Royal’s “large, futuristic-looking mast.”

    in reply to: The best SSK till date? #2086883
    TinWing
    Participant

    Moray program was terminated without a prototype or an order when RDM bankrupt.
    Walrus is a pretty good design, on par with equivalent and contemporan western submarines.
    Has its goods and its bads.

    There Dutch were originally going to order a total of 6 Walrus class, but the final pair was switched to the smaller Moray class. The Moray proposal dates from the mid to late 80s, although it really only received public attention during the many failed export sales attempts of the 90s.

    Oddly, the Moray reverted to a conventional rudder design, instead of the X rudder of its larger predeccessor. You would think that a smaller sub might be more likely to be “bottomed” than a larger type.

    The Walrus was indeed a “good design,” but the build times were terribly long – and it didn’t help that the lead ship had a fire in the shipyard that was so catastrophic that the Dutch government considered scrapping it.

    RDM’s big, Albacore hulled submarines were probably equivilent to Japanese submarines of the same era. Of course, Japan tends to order one submarine every year and Japanese shipyards are models of efficiency. It is a pity, or perhaps a blessing for France and Germany, that the Japanese don’t make defense exports.:)

    Perhaps, Japan builds the best SSKs in the world, if only because they have the continual experience of an active domestic building program. Of course, it is hard to prove that they are the best because only exporters need to “market” their products.

    in reply to: The best SSK till date? #2086887
    TinWing
    Participant

    Putting aside the lack of AIP, to what extent were the Upholder/ Victoria class a reasonable design ? I notice they have hardly been mentioned yet, but didn’t they have many features found only on the Neuks ?

    The most serious problems have effected the lead ship of the class, the ex-Upholder/Chicoutimi. The Upholders might be a “reasonable” design, but have not proven to be reliable.

    It is a pity that Vickers didn’t simply produce the German Type 209 under license, instead of incuring massive design costs – and long construction delays.

    How many Navy’s use SSK’s in Blue-water conditions these days, or are most generally confined to coastal duties ? Indeed how many of the SSK’s are designed for genuine blue-water operation a long way from home ?

    Diesel-electric subs suffer from very slow transit speeds – 6-8 knots snorkeling. This is tremendous problem now that a typical patrol area for a European submarine might be in the Indian Ocean or Persian Gulf. It is unreasonable to expect a crew to make such a long, tedious transit voyage.

    So what good is a submarine if you can’t get it to where it might be useful?

    In the end, any conventionally powered submarine is inherently a defensive, coastal weapon.

    in reply to: SM-3 evolution plan. #1806275
    TinWing
    Participant

    Also I’d be interested in any info anybody might have on what kind of SAMs/ABMs they’re kicking around for the new VLS system. (Supposedly KEI will be going to sea but there’s no way it would come close to fitting in the new VLS system. Any idea how they plan on doing it?)

    What is the source of the image? It looks like a part of a .pdf or a powerpoint?

    The 21 inch diameter was mooted for the LASM, but I though that the land attack mission had now been passed down to a quad-packed GMLRS derivative?

    in reply to: Alternatives to the P-8A #2540197
    TinWing
    Participant

    Swerve
    I’m afraid this is media dumb down nonsense. I worked as a fairly senior engineer on Nimrod MRA4 from 1996 to 2002 and I can assure you the problems of non standard airframes have been vastly overstated (a smokescreen I would suggest) and the real problems causing delays are completely different/complex. As I have a mortgage to pay and family to support, I cannot go into more detail.

    If it makes you feel any better, I don’t believe the official Airbus propaganda explaining the delays in the A380, either.

    There are two significant issues to consider when converting a modern airliner to an RMPA role;-
    1- Airframe fatigue design philosophy – Older aircraft used the Safe Life approach which resulted in a far stronger airframe than the more modern Fail Safe approach which was introduced around 1960. The older Safe Life airframe designs soak up the punishing low level turbulence and maneuvering that is just not present on the high level point to point transits of modern airliners.

    and

    2 – Heavy Ordinance need to be stored (and ideally released) as close to the cg as possible. On most modern twins the Main Landing Gear is right in this location. I do accept that this can be overcome to a degree, but at a heavy price in structural/fuel performance terms.

    It is these two reasons which have lead to the longevity of the P3 & Nimrod in the RMPA role.

    If you go back far enough, I’m not sure that the DC-3 had a “fatigue life?”

    Of course, the newer but similarly unpressurized Shackleton did indeed have a fatigue life, so I guess that not all old airframes last forever – or maybe it’s just a matter of flight profile.

    I’m not sure how Boeing are addressing these issues on the proposed 737 RMPA.

    I suppose the important thing is to get the contract first and worry about the “details” later.

    in reply to: Little Info on the Clemenceau #2087610
    TinWing
    Participant

    The take-off weights and speed for the A-6 required more than the “short” BS-5 could put out.

    The A-6 did, however, fly off the Ark Royal in an “exchange” operation:
    http://forum.keypublishing.co.uk/showthread.php?t=44318

    Note the USN Phantom as well.

    The new A-6Es & the EA-6Bs were only fitted for the nose-bar type launch, and the A-6A>E conversions had the bridle attachment points removed.

    The A-7A/B/C, and maybe the E now, could have operated off the French carriers… although they might have been restricted to a lower max payload.

    I would think that the limited clearance between the jet blast deflector and the catapult would have limited the length of the run of a nose-bar equipped aircraft.

    in reply to: Chinese CJ-7 jettrainer … #2542400
    TinWing
    Participant

    Just re-found them on my harddrive …. 😎

    Does anyone have any additional information on this jet ??? Which manufactor, which year ???? … was it a contender or predecessor of the K-8 ? :confused:

    Thanks in advance, Deino 😀

    I do have to wonder if there is a relationship between Saddam Hussein’s supposed L-29 UAV program and this Chinese L-29?

    After the capture and reverse engineering of Firebee recon drones, China would have had a substantial lead in UAV technology….at least by the standard of the 1980s and early 90s.

    China was a notable weapons supplier to the Iraqi regime during the 1980-88 war, and large quantities of fairly recent Chinese small arms were found in 2003.

    in reply to: Indian navy – news & discussion #2088337
    TinWing
    Participant

    X post from BR

    India says no to British Harriers

    New Delhi, Oct 13 (IANS) The Indian Navy has declined to buy eight British Sea Harrier FA.2 fighter jets that were phased out of the Royal Navy in March this year.

    According to a report in the October issue of the defence magazine India Strategic, the eight Harriers, which were also the last to serve the Royal Navy, were on offer but without some vital components like missiles and the Blue Vixen fire control radar. The prime consideration was to use them to train pilots and to fill in the gaps caused by the loss of six Harriers in the Indian Navy due to accidents spread over more than 20 years.

    Indian Navy pilots and defence ministry representatives inspected and assessed the aircraft for technical and financial evaluation but it was decided not to go in for them as the jets needed considerable expense in upgrading their avionics and arming them.

    Published reports indicate that India has 22 Sea Harriers, 16 of them being the FRS.51 fighter version. They are to be gradually replaced by MiG-29K aircraft, some 40 to 50 of which are likely to be acquired from Russia.

    India has already contracted to buy 16 MiG-29Ks as part of the deal with Russia to acquire the aircraft carrier Admiral Gorshkov, renamed INS Vikramaditya, but more such aircraft would be needed as the Indian Navy grows to its required size and capability.

    As for the Royal Navy Harriers, the Indian Navy was initially enthusiastic, but then felt that “devoid of their offensive systems, they wouldn’t be of much use”. For training “the navy is already considering either the BAe Hawks or Boeing/BAe Goshawks”, a source said.

    Indian Navy pilots are now being given advanced carrier takeoff and landing training at the US Navy’s Pensacola facility to prepare them for the arrival of Gorshkov and MiG-29Ks.

    This had become necessary as ironically, the Russians were unable to offer matching training facilities although they sold both the aircraft carrier and the MiG-29K jets.

    Harrier jets played a decisive and proven role in the Falklands crisis of 1982. The last naval variant, the FA.2, was armed with US AIM 20 AMRAAM (advanced medium range air-to-air missile) and the Ferranti ARI.50019 Blue Vixen radar that enabled it to engage four targets simultaneously.

    India had decided to buy the Harriers in the mid-1970s as part of its efforts to build a blue water navy, while their actual deliveries began in 1983.

    The Indian Navy’s 16 Sea Harrier FRS.51 fighter versions are now under a midlife upgrade with new air-to-air missiles as well as helmet-mounted target acquisition sights.

    The Indian Navy Harriers originally were equipped with the Ferranti Blue Fox radar that had poor “look-down” capability compared to the Blue Vixen of the British Navy.

    The Indian Navy plans to use the Sea Harriers till around 2020.

    Engines for Indian Sea Harriers were supplied by Rolls Royce while the aircraft have been maintained and upgraded – as prime contractor – by the Hindustan Aeronautics Limited (HAL).

    –By Gulshan Luthra

    http://www.teluguportal.net/modules/news/article.php?storyid=17433

    It might have been easier to retrofit Israeli radar sets to the surplus RN Sea Harriers, and perhaps the additional space and volume provided for avionics would have made the upgrade cheaper than retrofitting the IN’s own older Sea Harriers. Some of the airframes on offer were less than a decade old, far younger that the IN’s own well worn Sea Harriers.

    The UK was right not to export the Blue Vixen to India, at least from the standpoint of non-proliferation. Why offer nearly free technical assistance to a nuclear power like India? It is clear that possession of Blue Vixen radar sets would have been useful for India’s own MMR program.

    India should have snapped up these Sea Harrier airframes, as offered. Instead, money is being spent on older, less serviceable Sea Harriers and the very riskly MiG-29K purchase.

    TinWing
    Participant

    To me this is actualy the dream situation for the Russian helicopter industry…

    Who knows, maybe they use the Mi-26s like them and buy them in numbers as the next British heavy helo… The shorter the available budget the more interesting the Russian helos might seem to the western military forces.

    Comments?

    Regards?

    Hammer

    Buying a fleet of high-operating cost Russian helicopters would be a stupid move for the UK – but leasing the helicopters (and crews) for overseas operations is a good idea.

    Let’s put it this way. It is far better to loose 30 leased Mi-17s – and their Russian “mercenary” flight crews – than a single RAF Merlin or Chinook. There are political ramifications to service casualties, but the public doesn’t take notice over Russian “contractors.”

    The Mi-26 would be a stupidly expensive purchase, but there might be role for a couple of leased examples.

    TinWing
    Participant

    I think they’d have better luck tracking the SDB itself…

    Matt

    “Rogue states” can hardly afford to fire a S-300/S-400 class missile at every SDB that comes their way.

    I think the real beauty of the SDB is that a bomber sized platform can drop dozens (up to the low three figure range?) of these munitions on a single sortie – all from outside the engagement envelope of most most SAM systems.

    in reply to: USS GH BUSH CHRISTENED!! #2090097
    TinWing
    Participant

    [url]
    http://media.primezone.com/cache/189/med/3299.jpg

    I anyone deserves to have a carrier named after him, it is G.H.W Bush. Of course, he deserves it because of his service as a naval aviatior in WWII, not just because he was a president.

Viewing 15 posts - 406 through 420 (of 720 total)