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Obi Wan Russell

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Viewing 15 posts - 496 through 510 (of 511 total)
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  • in reply to: The carrier-based SEPECAT Jaguar M a missed opportunity #2068339
    Obi Wan Russell
    Participant

    I guess its good the never got an “Essex”, or tried to buy “Victorious”……..

    I’m surprised no one tried to buy any of the British carriers axed by Denis Healy, as they were all withdrawn well before their time.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

    in reply to: The carrier-based SEPECAT Jaguar M a missed opportunity #2068439
    Obi Wan Russell
    Participant

    Ah, but part of the reason Foch… ok, Sao Paulo, is in such good shape [and can be kept that way] is the parts removed from Clemenceau… keep Cleme in commission somewhere, and both will be in worse shape, and be under refit more of the time.

    And what would De Gualle have done for propellors for those few years… 😀

    So you’re saying a ship will run better with old second hand parts than with new recently manufactured ones? I know this is stretching the point a bit for the sake of argument, but if both ships had gone to South America then new parts would have to be manufactured rather than relying on an ever diminishing supply of second hand ones. CdG would have had to have new propellors, at a higher cost of course but it would have happened. Cannibalising old ships may be cheaper than buying new parts but is a finite resource.

    in reply to: The carrier-based SEPECAT Jaguar M a missed opportunity #2068540
    Obi Wan Russell
    Participant

    To be fair, I quite like the Clemenceau design, a lot of punch for a little ship and I think it is a shame a new owner couldn’t be found for Clemenceau herself. Back in the eighties I remember predicting that she and her sister ship woud end up with Brazil and Argentina, and if the Argentine economy had been in better shape this may well have happened. A lot of flat tops have had their careers cut short when they still had a lot of useful life left to them, and in this respect Clemenceau joins a long and distinguished list.

    in reply to: The carrier-based SEPECAT Jaguar M a missed opportunity #2068564
    Obi Wan Russell
    Participant

    Yes.

    But the SuE’s success was heavily liked to the Exocet’s. Whil it was a good aircraft, it suffered of some drawback, like insufficient autonomy and range, and limited payload (hence limited firepower), which is sad since the Foch and Clemenceau could only carry a small air group. Having had more capable aircrafts would have been a serious plus…

    For that matter, when comparing our Crusaders/Etendards/SuE-equipped Foch and Clemenceau carriers, with the british Buccanners/Phantoms-equipped Ark Royal carrier, I’d have gladly traded the first for the former…

    Could you clarify that last sentence? You have in effect said you would trade the Clemenceau for the Clemenceau, which is just a little confusing!

    in reply to: Other CVF Partners? #2071410
    Obi Wan Russell
    Participant

    How many Harriers are available for the Fleet Air Arm and the 2 aircraft carriers Illustrious and Ark Royal til CVF+F35B (2015-2020)??

    800NAS and 801NAS have both been recommissioned with Harrier GR7s (and will recieve GR9s when available) and will soon be at full strength with 9 aircraft each. The two RAF sqns (no.1 and no.IV) will operate at the same level and will be able to deploy aboard the carriers as reinforcements when necessary. Further reinforcements can be provided by the Joint Force Harrier training unit, no. 20sqn which is a mixed RN/RAF unit, having absorbed 899NAS.

    in reply to: Other CVF Partners? #2074102
    Obi Wan Russell
    Participant

    But the weight makes a difference to the deck strength needed (it’s been suggested – I don’t know how accurately – that this would limit F-35B operations from Invincibles), & to the capacity (max weight, not just dimensions) of the lifts. And those few feet make a difference when you’re designing mini-carriers. It is undeniable that the minimum size for a ship which can operate the F-35B is greater than the minimum size for Harriers, which is what I said. And there’s a difference between can operate off a ship, & can operate efficiently off a ship.

    What would you recommend as the minimum practical size ship for F-35B?

    Minimum practical size would hinge on the minimum number of aircraft required to provide an air group of useful size, for CAP duties and/or strike missions. In my book anything below 20,000tons is a wasted opportunity, as for example the cost of increasing a 12,000ton CV design to 20,000ton+ is relatively small but allows a much more useful air group to be embarked. An F-35B can theoretically be operated from a Frigate’s heli deck (assuming it was stressed to take the weight of course) but what would be the use of a single aircraft? This is why oft quoted proposals like the 80s Skyhook never got any where, in D K Browns’ book ‘Rebuilding The Royal Navy’ he mentions that his team were often asked to carry out design studies to show if a destroyer could be adapted to carry a couple of harriers, and it was certainly feasible but uneconomic as the support facilities and crew required would be the same for up to six or more aircraft. Also the artists impressions of the Skyhook proposal show a ship with an aft helideck big enough for a sea king, so why not just land the harriers there and save a lot of bother? 😀

    If your country can only afford one CV then something between 20-30,000tons would be desireable as this gives greater flexibility in operations and the increase in cost is not that great over a smaller ship, as the steel is not the biggest cost in building a carrier by any means. I don’t think the Invincibles (or any other contemporary small CV) would have any insurmountable difficulties in operating the F-35B, having been on board Invincible and Ark Royal on several occassions myself I remember how reinforced the flight deck was viewed from the hangar deck. The flight deck is the strength deck on these ships and was built take very heavy loads such as fully laden Harriers landing back on deck as well as fully laden Chinooks and Sea Kings (no light weights any of them), and even then reinforcing it further would be a straight forward engineering task, one which the RN has experience of with previous CVs.

    Actually, if I was pickking the ideal size for a Hypothetical carrier, I would trade ‘ship’ systems such as an extensive radar suite and weapons other than CIWS and C3 (or is it now C4?) capability in order to push the size of the ship up to 40,000tons if possible, moving these ‘lost’ capabilities to escorts whilst leaving space and weight in the carrier design for later installation if needed. The biggest battle a carrier will ever face is the one to be built in the first place, and keeping the initial costs down is one way to win that battle (HMS Ocean cost little more than a frigate by keeping the ships systems simple, no air search radar or missile systems for example, though these could be added at a later date if required), so I would aim for a ship that coulld operate a medium sized air group (including Strike/Fighters, AEW and ASW types as well as facilities for LPH operations) whilst keeping the ship simple and planning for later upgrades. 40,000tons brings the ship to the threshold of CTOL operations thus opening up the options for operational use. Plan to fight your own short sighted politicians before you plan to fight your nations enemies 😉

    in reply to: Other CVF Partners? #2074162
    Obi Wan Russell
    Participant

    The F-35B may be twice the weight of a harrier but it isn’t twice the size; it is only a few feet longer and wider than a Harrier and is designed to fit on the lifts of an Invincible without modification (and by extension the lifts of most if not all carriers in service today). The only risk to existing or planned ‘harrier carriers’ around the world is the possible cancellation of the F-35B, as it is the only STOVL game intown once the Harrier retires.

    in reply to: The 8000t "harrier carrier" concept? #2076946
    Obi Wan Russell
    Participant

    The almost finished Cavour has a deck-edge elevator and a conventional one….

    Yes it does, but the Italian Navy primarily operates in the Mediterranean where the weather is generally nowhere near as bad as the North Atlantic, and the deck edge lift is fitted well aft behind the island to avoid sea damage.

    in reply to: The 8000t "harrier carrier" concept? #2076981
    Obi Wan Russell
    Participant

    Thats quite a handsome design, I especially like the deck edge elevator

    Yes Fedaykin, I have to agree with you, regarding the deck-edge elevator.
    This would minimize interference with deck and below deck operations.
    I am very surprised that nobody has really utilized this technique much, apart from the US Navy, with their big amphibious ships.
    It would be most useful in the likes of Invincible Class, Principe de Asturias, and Giuseppe Garibaldi etc

    Regards
    Pioneer

    Deck edge elevators do improve a carriers capacity and in theory smaller carriers would benefit the most, but British and European designs tend to reject them because they are intended for North Atlantic operations where sea keeping is a priority. Deck edge lifts also cause structural headaches for designers as they require large hull openings that impose considerable stresses. Not insurmountable by any means, but remember even the PdA is essentially an American design (the original Sea Control Ship had a simpler bridge layout as it wasn’t intended to be a flagship and no ski jump but the lift layout remained unchanged) also intended for the North Atlantic and the only way they could fit a deck edge elevator without it suffering damage from high seas was to install it at the stern.

    Obi Wan Russell
    Participant

    The Thales brochure seems to indicate that Searchwater 2000AEW can fit into the S-2 Tracker’s existing retractible radome.

    Sadly, the Tracker seems to be becoming a rare beast. Does anyone know if any are left in storage in the United States?

    I heard earlier this year that the stock of airworthy airframes left at Davis Monathan Air Base had dwindled to about 18 due to spares recovery on the rest. The Tracker has a well proven sturdy airframe, which when fitted with turbine engines can compete well with more modern designs. Perhaps a small production run of new aircraft could provide the solution to several nations needs as the aircraft are still as popular as ever, and new airframes will obviously have a much longer service life than refitted forty or fifty year old planes.

    Obi Wan Russell
    Participant

    Many modern warships of the same age as Invincible are refitted and sold on for further service with other nations, and the Invincibles have been well maintained over the years. As I mentioned earlier they were designed on the principle of upkeep by replacement, so there are few ‘original moving parts’ remaining aboard any of them. The RN has a long tradition of recycling parts from one ship to keep others running, simply a matter of prudent management. The US CVs that are in reserve are another matter, they have been stripped of parts not just for re use in other carriers but also because the US government has no intention of selling them abroad to prevent them ending up in the hands of a hostile regime (unlikely I know, but these are the same people who believed Iraq was full of WMDs). Decommissioned US CVs are stricken almost immediately and have their catapults and arrestor gear removed. Even if they were maintained in operational condition for sale they would not be a good investment as they will have had a much longer service life than most other nations carriers (and hence a shorter remaining hull life) and being old designs they are manpower intensive, ie very high running costs, something even the USN is addressing in it’s new CVN-21 design (starting with CVN78). The CVF design is almost as large as a Forrestal, but has a ships complement barely one third the size.

    A second hand Invincible (or Garibaldi or PdA) would still be much cheaper than a new carrier to buy, but the cost of refitting it for service reduces this imbalance to a degree. The RNs Sea Harriers are currently in storage and most have been preserved in saleable condition. Some of the airframes are very ‘low mileage’, the last one came off the production line in 1998. The Blue Vixen radar system is included in the offer but not AMRAAM capability unless the americans agree to it, which is in part why the deal fell through with India. Thailands Harriers are probably the oldest examples in service anywhere in the world today (having been delivered to Spain as EAV-8S Matadors back in the mid 70s) and arguably the least capable too, lacking any radar, ‘laser nose’ or any means of targetting anything beyond visual range. They are probably most useful as training aircraft, and Thailand always struck me as the most likely buyer of Sea Harrier F/A 2s, up to twelve would meet their requirements and provide some real air defence capability and anti shipping potential, rather than the existing Harriers which are really ‘just for show’.

    Obi Wan Russell
    Participant

    I think you are referring to the post CVA-01 cancellation offer by the US Government in 1966 of THREE Essex class CVs to the RN in order to keep it’s main ally in the carrier club. The actual ships have not been named, although most writers assumed they would be three of the six SCB-27C/ SCB-125 modernisations (ie two steam catapults, angled deck, hurricane bow etc) but now it seems they may have been offering unmodernised vessel held in reserve which could be modernised to British standards as a ‘blank slate’ (British catapults, arrestor gear, radars etc). The offer was turned down on the flimsy excuse of incompatability with existing British equipment (incomprehensible nonsense), when the truth was that the government had already decided to abandon carrier aviation altogether, primarily for financial reasons but publicly they decided to concoct bogus and unsupportable justifications for this policy ( if I sound a little wound up about this, it is because I am allergic to stupidity and hypocrisy).
    The RAF top brass st the time thought if they could get the carrier force disbanded then the funds for the ships and their aircraft could be transferred to the Air Force budget (The RAAF were thinking the same thing when they persuaded the Aussie government to abandon plans to replace HMAS Melbourne), but funds cut from one part of the defence budget are almost never reallocated to another part. Instead they tend to be swallowed up by some failing government social program or pet project and are lost forever. The RAF didn’t get their beloved TSR 2s, nor did they get the proposed replacement for the carrier force, the F-111K, which was also cancelled shortly afterwards. Instead they had to make do with second hand Buccaneers from the rapidly shrinking Fleet Air Arm (which the RAF had been deriding for years as too slow and too short ranged, oddly when it became the RAFs primary strike aircraft they began to sing it’s praises!), Phantoms diverted from Navy orders became the RAFs primary interceptor and the AEW radars from now redundant FAA Gannets were retrofitted to ageing Shackleton MPAs. Hardly the result the RAF was hoping for in 66.
    The Aussie BPE will be comparable in size to Invincible, actually somewhat larger, but as they will have a floodable dock aft the aviation facilities will balance out closer to the British ship. If properly refitted, Invincible would be viable for at least twenty plus years depending on who gets her and how well they look after her.
    Hermes/Viraat and Cavour are very similar in size although the older ship has a larger flight deck due to her angled deck extension, something that would benefit carriers not intended to operate CTOL aircraft as flight deck space is always at a premium.

    Obi Wan Russell
    Participant

    but will any one want Invincible as it will be used a spare parts hulk to keep lusty and ark in commisson. isn’t ?

    Any warship sold to another country isn’t just handed over as is; a full refit and update takes place including the addition of any new weapons/radars etc, and the Invincibles were designed on the principle of upkeep by replacement (components as large as the engines can be ‘unplugged’ and replaced as and when needed), and in the meantime the components that are removed for re use in her sisters are probably ones that would have to be replaced prior to transfer anyway, and at least she has a maintenance party assigned to keep her nominally in working order for the time being. The two type 22 frigates transferred to Romania had been stripped for spares and left ‘cold and dark’ for some time prior to their sale and refitting, a state which Invincible is unlikely to be allowed to fall into for the forseeable future.
    Previous examples of this situaton are HMS Bulwark R08 being kept viable after paying off in 1976 and recommissioning after a refit in 1979, and HMS Hermes being kept likewise at Portsmouth from 1984 to 86 when she was sold to India, and they seem to have gotten their money’s worth out of her. It’s a different situation to that of HMS Eagle post 1972 which was used for spares to keep Ark Royal running, as she was left ‘cold and dark’ and allowed to ‘rot’ at her moorings as there was no intention of either returning her to service or selling her abroad. Even so, as late as when she was sold for scrap in 78 she could have been returned to service had the will been there, she was structurally sound, but the cost of refitting her would have been several times that which she would have required if she had been kept in fully maintained reserve. Just illustrating a point.
    As to the possibility of Invincible having a post RN career abroad, this would hinge more on what aircraft she were to operate. Second hand AV-8B Harriers/Sea Harriers will probably be coming onto the market around the same time, or she may go to a country that is in Americas ‘good books’ enough for the purchase of F-35B Lightnings (less likely, but stranger things have happened). India already has Sea Harriers, which are being upgraded for service well beyond the projected life of INS Viraat, and despite having turned down an offer to buy ex RN Sea Harriers for now they may change their minds in the future (or mend their fences with the USA enough to buy ex USMC Harriers). Has anyone considered Pakistan as a potential buyer? (unlikely again, I know, but they are getting close to the west and may try to address the massive imbalance between the Pakistani Navy and the IN). Other Potential buyers would be Australia (not if the RAAF has any say in it), and Chile (big chunk of the Pacific to patrol, they already operate ex RN ships and only real obstacle would be cost).

    in reply to: Little Info on the Clemenceau #2084249
    Obi Wan Russell
    Participant

    As to wether or not Hermes actually operated USN F-4Bs, I suppose seeing is believing:
    http://img113.imageshack.us/my.php?image=hmshermesr120030abd8.jpg
    FG1s as part of Hermes air group would have been employed primarily for air defence, and although the problems you have raised would have made the situation less than ideal, the intention was to ‘hold on’ until CVA-03 was built (CVA-02 was to replace Victorious in 1972, CVA-02 Ark Royal in 1976, CVA-03 Hermes by 1980 and CVA-04 Eagle by 1984, my calculations based on the original construction schedule and likely delays).
    The Crusader would have been easier to operate but was slower than the phantom and had less payload, so was less appealing on paper to RN planners, who were looking beyond the existing flat tops the CVA-01 class. I have always thought that the Jaguar would have emerged in the 70s in Naval strike form (not just the french Jaguar M, which was not fully developed) and would have been easier to operate from smaller British decks.
    Hermes port catapult could have been extended further if needed as it ran on a fore and aft axis with no obstructions behind for some distance. Upgrading her arrestor gear to DAX11 standard would have solved the recovery problem, and the angled deck could also have been extended forwards (as was done to Charles de Gaulle) to improve safety margins. My point is that a lot of untruths have been circulated about the British CV force of the 60s by those who wanted to justify the stupid descision to withdraw them from service.

    in reply to: China wants to buy Rafales for it's fleet of carriers? #2085327
    Obi Wan Russell
    Participant

    I’m sure the Chinese would like to get their hands on a Rafale M if only to get a close look at it’s nosewheel design, as it is a Nose tow launched CATOBAR aircraft, and would help any catapult program they have. So far the Chinese have had plenty of opportunity to examine the catapult from HMAS Melbourne, but this was an older wire bridle type and they would probably like to get their hands on something more modern. The Rafale could probably launch from a ski jump in STOBAR mode as it has very powerful engines, and these are the deciding factor. When an aircraft leaves the end of a ski jump, it is not yet at flying speed so is kept in the air on engine thrust alone for a few seconds. it continues upwards because of the ramps exit angle, and without sufficient thrust would soon fall back to earth, but otherwise is subject to increasing speed from it’s engines and soon reaches flying speed, at which point the wings start to provide lift and the aircraft begins flying conventionally. So far the only CTOL aircraft seen to use the STOBAR method are ones with BIG engines.

Viewing 15 posts - 496 through 510 (of 511 total)