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TinWing

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  • in reply to: C-17's for Canada #2523051
    TinWing
    Participant

    The C-17 deal involves a massive 100% offset, with the vast majority of the work going to….Manitoba.

    It seems that Quebec will be largely frozen out. Quebec has 60-70% of the Canadian aerospace sector, but will be lucky to receive 30% of the value of the offset.

    Sadly, Quebec would have benefited more if there hadn’t been any offset deal. The offset primarily serves to creat jobs in Conservative districts, while maintaining a dangerously overvalued Canadian dolar which makes Canadian exports – and Canadian labor costs – uncompetitive. In the end, Quebec will probably loose far more jobs in the aviation sector than it will gain from the offset.

    in reply to: Indian navy – news & discussion #2067494
    TinWing
    Participant

    Speaking of LPDs, there’s a curious looking LPD-esque ship on the Goa Shipyard site. Can anyone shed any light on this pic?
    http://www.goashipyard.co.in/images/cad-cam1.jpg

    1. The bridge is very low, regardless of the overall scale of the design.

    2. It is hard to guess whether we are looking at integrated masts, or conventional masts?

    3. Depending on the scale of the drawing, this is either a very large ship with a very large helicopter hangar – or a fairly small ship with no hangar.

    4. Does Goa Shipyard have suitable facilities to produce a LPD/LSD vessel? So far, Goa has only produced fairly small ships and patrol boats?

    in reply to: Indian navy – news & discussion #2067550
    TinWing
    Participant

    I would add the transfer is hot! So, India is off in running from the start and will gain valuble experience is a very short time. She will of course follow up with new built design shortly…………..

    Don’t expect to see a new built LPD in Indian service anytime soon – unless the contract goes to a foriegn shipyard.

    in reply to: Closer ties with france could see Mistrals for Australia. #2067554
    TinWing
    Participant

    I belive the Chinook can be fitted with folding rotors and this may make sense for future Chinook purchases to have this capability if its compatable with the BPE.

    No current Chinook is suitable for sustained maritime operations. The blade folding issue is just the tip of the proverbial iceberg.

    It would be more realistic to consider the issue of BPE/Mistral compatibility with the upcoming Sikorsky CH-53K or the comparably sized Eurocopter HTH concept.

    in reply to: The carrier-based SEPECAT Jaguar M a missed opportunity #2067786
    TinWing
    Participant

    To alleviate these problems the Jaguar M would have necessitated extensive modifications: a new wing + new reactors + new weapon system (essentially a new plane), resulting in an expensive and risky test program ; in addition to the modulated PC that was developped and subsequently fitted to land based Jaguars. All this had to fit within the program cost for just 100 planes. And you still had to buy ~20 Jaguar E for training, that could not be embarked on carrier.

    With the same money you could buy ~80 SEM or ~30-40 A7 Corsair II. If the Corsair had been selected, with attrition reserve and training aircrafts, that would have left maybe 20 airframes for equipping the carrier.

    The choice was probably not difficult.

    I think you are overstating the problems encountered. The fundimental truth is that the Jaguar would have been available a bit too early as an Etendard IVM replacement, and was relatively expensive for an aircraft of its size and performance. The MN could afford to wait.

    You also fail to appreciate that the MN has never required conversion trainers – or even high performace flight deck trainers to replace the Fouga CM.175 Zephyr. In fact, the French never bothered to procure the two-seat variant of the F-8 and never developed a two seat Etendard.

    Forget about two-seaters in MN service – this is pure fantasy.

    in reply to: Brit carrier air groups 1960s #2067977
    TinWing
    Participant

    Just been thinking…….but……could the Sea Vixen have adequatly defended an RN carrier TG? It seems to me that against Bears or Badgers it would have been ok, but what bout MIG-17s an 21s? Could Sea Slug have worked?

    The Douglas Skynight claimed a few MiG-15s over Korea.

    There is no reason to suppose that Sea Vixen flying as a “night fighter” might not have done well against the MiG-17 or MiG-21.

    Keep in mind that the North Vietnamese kept well clear of U.S. carriers on “Yankee Station.” Of course, there was an instance where a MiG was taken down by a Talos missile….

    in reply to: CVF News #2068167
    TinWing
    Participant

    The current political issue is that a large part of the Scottish population want to break the union with the UK and form a seperate country, by placing large government contracts with Scottish industry the UK government is saying “look what the union does for you, break the union and these contracts go to English ship yards”.

    Govan is the last active shipyard in the UK capable of assembling the hull blocks of the CV-F. There is no realistic alternative site in the United Kingdom.

    in reply to: LAVEX2006, Libya's first Airshow #2531385
    TinWing
    Participant

    Those were of downgraded MiG-23MS variant.

    I don’t think that it would have made any difference which version of the MiG-23 it was. The results would have been the same.

    in reply to: the Aermacchi M-346 #2531392
    TinWing
    Participant

    Here’s its twin- the Yak-130 production configuration.

    Yakovlev have variants for carrier training, recce, ECM, light attack, fighter-bomber, even UCAV on the drawing board- and a supersonic (Mach 1.5) derivative too! (Yak-135)

    It is easy to see where you would stow the arrestor hook for a carrier based Yak-130.

    The supersonic Yak-135 does sound as if it might be similar in concept to a definitive, afterburning L-15.

    in reply to: Impression of the OPV for RNLN #2068224
    TinWing
    Participant

    ….the position of the funnels means that vision aft is also somewhat constrained on the Project Protector OPVs.

    Why is this a problem on a modern ship? I would really think that a video camera/monitor would suffice during maneuvering in port?

    in reply to: making a COTS airframe survivable? #2533009
    TinWing
    Participant

    This is exactly what I am trying to address. I want to take the UH-72A and see if certain measures can be done in order for it to address the requirements of the Armed Reconnaissance Helicopter (ARH) thus one platform performing two roles for the ARMY (hopefully saving time and money). In order for me to do that I have to address many issues including live fire/survivability since survivability is an issue for the ARH. There are other performance based aspects (required of the ARH) that I think the UH-72A is readily able to handle, but other aspects will require some modifications to the airframe of which I have extremely insufficient knowledge of.

    Why reinvent the wheel?

    Have you already contacted Eurocopter Germany in regard to archival information on the Bk-117M?

    Have you checked the 1990-1991 edition of Jane’s All The World’s Aircraft for the last entry on the Bk-117M?

    in reply to: making a COTS airframe survivable? #2533090
    TinWing
    Participant

    can anyone address the last issue in my original post of modify first then shoot vs. shoot first then modify? I am trying to get into some of the more nitty gritty test and evaluation issues so I can see whose responsibility it is or when action is taken with regards to modifying an airframe.

    Survivability isn’t a major issue with the UH-72A/EC-145. You have picked a poor example for your question, and I’m not sure that you fully grasp the inherent vulnerability of any helicopter.

    This helicopter isn’t being procured as a combatant, but for the casualty evacuation or CASEVAC role. Traditionally, the U.S. Army has used some of its oldest airframes, such as UH-1H and early model Blackhawk variants, for this noncombatant role. The EC-145 will have lower operating costs than the elderly, oversized helicopters that it will replace. To be sure, CASEVAC helicopters fly into dangerous areas, but are clearly designated with a red cross in a white background.

    It is important not to place too much value on the notion of “hardening” a civilian helicopter against operational hazards. Why do you think the Army always used its olded, least valuable airframes for CASEVAC? Attrition is inevitable in this role.

    in reply to: Blue Water OPV #2068300
    TinWing
    Participant

    I agree that the ideal solution is a purpose designed OPV, but that will take years to get into service and will no doubt have to be funded at the expense of other programs.

    Any Type 45 above and beyond the intial 4(?) will “have to be funded at the expense of other programs.”

    If the UK was willing to buy and existing design from an overseas shipyard, cost and timescales could be managed. Moreover, operating costs could be decreased by retiring obsolete frigates – while maintaining the same overall number of hulls.

    Buying ”bare-bones” T45’s with all gun armament is the compromise solution, it’s the easy option because it’s in production, it can be easily upgraded as necessary with off the shelf equipment and of course there would be savings from a larger production run and commonality of training, maintainance, etc.

    There will never be any “off the shelf equipment” to upgrade anything. Lead times are tremendously long for complex sensor and weapon systems.

    If you don’t buy a radar set, or missile system at the same time (or before) you order the hull, the odds are that it will long be out of production by the time of the midlife update.

    A ”bare-bones” T45 could even be loaded with 48 cruise missiles when operating with a surface group.

    This will require major re-engineering of the are forward of the superstrucuture for Tomahawk/Mk41 or Scalp Naval/Sylver A70. Currently, the Type 45 uses the Sylver A50 VLS, which is far too short for any cruise missile capability.

    Transforming the T45 from a single-purpose AAW platform into a single-purpose land attack platform isn’t a cheap or effective solution.

    It could also prove desirable not to give major upgrades to ”full capability” T45’s and instead upgrade the ”bare bones” T45’s to leap frog their capabilities.

    That would simply shift costs further into the future, which always increases the ultimate size of the outlay.

    in reply to: The carrier-based SEPECAT Jaguar M a missed opportunity #2068326
    TinWing
    Participant

    I’m surprised no one tried to buy any of the British carriers axed by Denis Healy, as they were all withdrawn well before their time. Eagle was was only eight years out of a five year SLEP refit which should have seen her fit for service into the eighties. Victorious likewise had recieved an eight year SLEP 1950-1958 and still had ten years ‘on the clock’ when paid off. If France had bought Eagle in 1972 they would have had a ship able to operate not only their existing a/c but also the option of ordering larger more powerful types. Centaur and Albion also went before their time, and also the Canadian Bonaventure was paid off at 13 years of age, just three years out of her mid life upgrade, a bargain for any nation looking to join the carrier club. The RN would be very pleased if more nations, including Argentina bought carriers, as it justifies retaining our own capability even more.:D

    Do you have any idea how expensive it would have been to operate Eagle?

    Eagle literally had about 4 times the machinery (160,000shp) as a Colossus/Majestic class carrier (40,000shp)! Even Centaur (80,000shp) had twice the propulsion plant of a Colossus class carrier. In other words, think about massive increase in crewing and bunkerage.

    No foriegn navy in the 1960s could afford to operate large, aging RN fleet carriers. Even France would have lacked the resources to operate HMS Eagle in addition to the two Clemenceau class carriers. In any event, Eagle was less economical, and less operationally efficient that either of the two domestically built French carriers. Warbuilt British carriers didn’t feature the best build quality to begin with, and Eagle had a very short flight deck for her massive displacement.

    In any event, the aircraft carrier proliferation that did occur – mostly from obsolete Collosus/Majectic class – didn’t strengthen the case for retaining the RN’s own carrier fleet.

    in reply to: Impression of the OPV for RNLN #2068407
    TinWing
    Participant

    Well, Norway & Denmark have OPVs over 3000 tons which are definitely OPVs, not frigates. They have hulls strong enough for icebreaking, for Arctic patrol, & are relatively slow, being designed for good seakeeping & long patrol range rather than speed, e.g. the Norwegian Nordkapp is based on a deep-sea trawler hull. They’re also lightly armed – but can have extra weapons fitted very quickly, expecially the Danish stanflex Thetis-class. At that point, with the extra weapons, I think they become slow frigates 😀

    Doesn’t the OPV designation date from the creation of 200NM economic exclusion zones? It would seem that shipbuilders adopted the term “Offshore Patrol Vessel” as a way of marketing lightly armed patrol vessels without the political stigma of using a warship designation, like “frigate” or “corvette.”

    The term OPV is meaningless to a nation that has a long tradition of purpose built patrol vessels. For instance, the USCG will continue to use the term “cutter,” which dates from an era in which the primary function of a coast guard was the collection of customs revenue. The French refer to lightly armed Floreal, LaFayette and A69 frigates as “Avisos,” the same term used in the colonial era, which better armed surface combatants like the FREMM will be called “fregates.”

Viewing 15 posts - 316 through 330 (of 720 total)