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XN923

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Viewing 15 posts - 91 through 105 (of 1,083 total)
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  • in reply to: Your favorite phtograph from 2008 #489533
    XN923
    Participant

    Two of my favourite acts of the year

    Clacton Airshow
    http://i62.photobucket.com/albums/h94/XN923/Clacton%2008/ClactonAirshow08745.jpg

    Farnborough Airshow
    http://i62.photobucket.com/albums/h94/XN923/Farnborough/Farnborough579.jpg

    Fingers crossed we’ll see more of the latter in 09

    in reply to: Any Merlins left for a speed record ? #1211122
    XN923
    Participant

    Fascinating! Can we have a pic of the Roadrunner in plan?

    Reminds me a little of the Bugatti racer –
    http://www.airventuremuseum.org/images/collection/aircraft/Bugatti%20Model%20100%20Racer%20Specifications-1.jpg

    in reply to: The same, but different… #1161229
    XN923
    Participant

    Didn’t Corsairs have serious issues? Was it the Brewster built aircraft? And didn’t they end up in a training role or were they shipped to the FAA?

    I’m at work so doing this from memory!

    I believe all Brewster built F3As were used in non-operational roles, probably due to the same manufacturing issues that kept the Buccaneer/Bermuda dive bomber from doing anything other than towing targets.

    in reply to: The XH558 Discussion Thread (merged) #1169380
    XN923
    Participant

    Now I know there’s a very serious problem!!!!
    HTH
    Resmoroh

    Yes, VTTS has introduced a new communications channel to help reach a wider audience and promote itself better. Terrible. Honestly, if VTTS successfully demonstrated the ability to walk on water someone would complain that they were poisoning the drinking supply.

    VX927 – bear in mind that much of that four week period was Christmas and the new year, and charity work will surely slow down.

    Spitfireman – there is a large and active merged XH558 thread where, if you are of a mind, you can discuss to your heart’s content (and I imagine this thread will be merged into it very soon). I think what was meant by this was that the press office is for disseminating information and doesn’t have the capacity to respond to requests for specific information, for which there are other channels.

    in reply to: Miles M.52 and the X-1 – again! #1170203
    XN923
    Participant

    http://www.aerospaceweb.org/question/history/q0198c.shtml

    For those who havent read this account of Hans Guido Mutke’s flight on 9th April 1945 flying an Me 262 it may throw a spanner in this debate. Further referencing can be found on the net including information released by the Americans on this and other debriefed pilots of the German jet. It pre dates the bell aircraft and one has to ask if the Americans knew this why did they continue telling the world that they got a first?

    I don’t follow – this account says “In light of this information, it seems very unlikely that Hans Mutke broke the sound barrier in 1945 while flying the Me 262. If he had, he would not have lived to tell the tale. Mutke probably reached speeds closer to Mach 0.85. It seems probable that he experienced the sudden changes in flight characteristics that often occur in transonic flight and believed he had flown faster than was actually possible.”

    Also bear in mind that the linked report says that Mutke did not come forward with his claim until the characteristics of transonic flight were well known – and claims even he did not think he had broken the sound barrier until later. So how could ‘the Americans’ have factored this dubious claim in even if they had wanted to? In any case the Bell and Miles designs were not really influenced by German tech as they pre-dated most of that information being available to the Allies.

    I think claims that Mutke exceeded Mach 1 as he claimed are generally regarded as extremely unlikely, and in any case are impossible to prove. The Me262 did not have good transonic characteristics and probably did not contribute much to postwar supersonic research as the Messerschmitt P.1101 and Focke-Wulf Ta183 designs were already far more advanced and the Allies had this to draw upon after the war.

    in reply to: Miles M.52 and the X-1 – again! #1171138
    XN923
    Participant

    OK going off thread a little here so appologies, and this may drum up some heated debate, but in MY opinion the first man to break the sound barrier in a true aeroplane was John Derry, De havilland 108’Swallow’, Sept 1948.

    Didn’t the XP-86 officially exceed Mach 1 before this time?

    in reply to: Miles M.52 and the X-1 – again! #1171300
    XN923
    Participant

    There are a number of factors in the cancellation, any one of which would have been enough and taken together mean it would have been a much greater surprise if the M.52 hadn’t been cancelled in 1946.

    1. Problems with the engine – the proposed afterburning turbofan was apparently experiencing difficulties with power output and reliability and there were serious doubts that it could be made to work
    2. Frank Whittle – Whittle was overworked, stressed and ill by this stage. He resigned from Power Jets just before the cancellation – coincidence? Proceeding with the project without Whittle’s input seems unthinkable
    3. Aerodynamics – it was certainly realised afterwards, though it is open to debate whether it was known at the time, that the annular intake was not very efficient
    4. Power-drag curve – according to Barrie Hygate it apparently was known that to exceed the speed of sound, the M.52 would have been required to dive very steeply from high altitude, unlike the Bell which could exceed Mach 1 in level flight
    5. ‘Putting the cart before the horse’ – the end of the war and the apparent ability to use ‘easy’ and ‘cheap’ pilotless models to test the concepts involved must have looked attractive to the Air Ministry
    6. Money 1 – Miles had spent a lot of time and money (IIRC around £60,000) between 1942 and 1946, and while they had undoubtedly made a great deal of progress, a flying prototype was still some time and approximately £250,000 away
    7. Money 2 – Britain was bankrupt and Atlee had been elected on the promise of the welfare state. An expensive, impractical and potentially dangerous research aircraft probably seemed like something of a luxury at this stage

    Vickers (I hadn’t heard about the Barnes Wallis connection but this makes sense given the company that took on the work) took on the pilotless aircraft project, based on a scaled down M.52, after which it became clear that this was actually a much more expensive and complex proposition than had previously been considered. The simple rocket engine would not fire at altitude, or blew up when it did so, so had to be redesigned and improved. The guidance and telemetering systems also took more work and became more complex than had been anticipated. By then it was too late to turn the clock back.

    Ironically, when a successful launch was finally made, over a year after the first attempted launch, it proved Miles’ thin wing and all-moving tail to be right on the money. The model reached around Mach 1.4 and was last seen heading for the sunset at a rate of knots. By then of course the Bell X-1 had flown and a lot more was known about the problems of supersonic flight.

    Equally ironically, now Britain finally had a proven system of pilotless, high speed model aircraft, it too was cancelled. Who knows how many layouts could have been tried using this scheme? For me, this is the real tragedy of the M.52 story – that a successful system of supersonic research was cancelled just after it had been proven to work.

    in reply to: Hurricane Variants #1192568
    XN923
    Participant

    I gather that due to the positioning of the IID’s cannon in underwing gondolas led to a pronounced nose-down trim every time they were fired, as the aircraft would effectively tilt around its centre of gravity. Perhaps it was this the pilots were feeling and mistaking it for a sudden slowing?

    IIRC the fastest production Hurricane was the MkIIA at 354mph.

    in reply to: The XH558 Discussion Thread (merged) #1196750
    XN923
    Participant

    Those who say it cannot be done
    Need to get out of the way of those who are doing it

    -Confucius

    in reply to: Spitfire wing..a new view #1198665
    XN923
    Participant

    This thread really is a very bad example to young historians. Just because somebody has a belief, doesn’t mean it must be proven wrong. The only requirement is a balance of evidence – and that has been shown here many times.

    Quite, beliefs don’t have to be proved wrong – but to be of much use to an historian they should be proved to be something. Whether that is right, wrong or ‘file under seagulls’. I would hope young historians don’t take the approach of clingling blindly to an ill-backed-up notion until someone spoon-feeds them with evidence they have already been directed towards several times.

    Good Lord, that Type 179 is ugly!

    in reply to: Skua from Norway raid #1200670
    XN923
    Participant

    Not the Konigsberg – this Skua, L2963, was shot down in the June 12/13 1940 raid on the Scharnhorst in Trondheimfjord. It was flown by Lieutenant Cecil Filmer and Petty Officer Anthony McKee of 803 Naval Air Squadron, and was ditched by Filmer after pursuit by fighters. When his TAG was hit, he put the aircraft down rather than risk losing another crew member in a hopeless fight. (Filmer’s earlier TAG had been killed during a battle with He111s over Alesund). The Skua was recovered by the Germans and is believed to have been scrapped. The restored/recreated cockpit section at the Norsk Luftfartmuseum in Bodo bears the ‘nose art’ of L2963 but it is made up of parts from a number of different airframes.

    The raid was a complete disaster, with more than half the aircraft involved being lost and a number of crews killed. Only one bomb hit the Scharnhorst, and that failed to explode.

    The earlier raid against the cruiser Konigsberg in Bergen harbour was, by contrast, a complete success. A number of direct hits were scored and the ship sank after approximately two hours. Only one aircraft failed to return.

    in reply to: Spitfire wing..a new view #1200679
    XN923
    Participant

    Is it worth pointing out that Heinkel’s own fighter project the He112, in many ways a scaled down He70, was largely a failure in that its highly labour intensive construction brought no advantage over the Bf109? – and that when Heinkels went back to the drawing board and created the He100 (which could very likely have been a world beater) they abandoned the elliptical wing?

    There is always, in terms of packaging and aerodynamics, more than one way to skin a cat. As has been pointed out, if you look at the various GA drawings coming out of Supermarines between the Type 224 and the Type 300, there is a steady evolution in the wing towards a thinner and more tapered form – and the ellipse was introduced when space was required for four more MGs.

    Mitchell’s admiration for the He70 is not in doubt, but as far as I can see it was far more to do with the flush riveting that reduced skin friction. As James has pointed out, the Spitfire’s wing was a fortunate confluence of events and design ideas – the desire to make as thin a wing as possible after the overly bulky 224, the initial requirement to build evaporative cooling leading to the LE box spar, the need to package eight .303 MGs etc etc, washout to prevent tip-stalling… To put it all down to a simple cause-and-effect of Mitchell sees He70 > Mitchell has eureka moment > Mitchell puts elliptical wing on Spitfire is just far too simplistic and belies the evidence presented both in this thread and in the many references that have been cited.

    in reply to: Why can't UK build it's own aircraft? #2494093
    XN923
    Participant

    I think the most reasonable choice would have been to develop a small daylight fighter as addition to the heavy two-seat Phantoms, something like a supersonic Hunter (as competition to the rather primitive but successful Mirage). The Brits had engines and resources to do it, exportability was definitely given.

    We had our own Mirage – the Fairey Delta 2. If only there had been some official interest in it beyond pure research.

    Putting the Spey into the Phantom was – from the industrial point of view – a reasonable idea, besides the fact that the Spey Phantom was better in most regards.

    Weren’t the Spey engined Phantoms known as the most powerful, most expensive, slowest and least capable of the whole family? Enlighten me if I’m mistaken, this isn’t really my area.

    in reply to: HP Victor? #1167148
    XN923
    Participant

    The Victor B.2 initially carried on as a bomber while the Mk1s were converted to tankers. However, when the fatigue life on the earlier aircraft started to get low, the Victor B.2s were pulled from bombing to replace them.

    There were Vulcan tankers as well – XH558 was a tanker for a while. Vulcans needed an external gondola to perform that function though.

    in reply to: Pathfinders – TV Series #1167152
    XN923
    Participant

    Overlord is currently out on DVD with some useful extras like a commentary by the director and interviews with some of those involved in the productions. The lengths they went to to blend contemporary and modern footage was very laudable, including sourcing 1940s lenses for the cameras. They also tried hard to get the best quality contemporary footage, so rather than nick from newsreels, went back to source wherever possible.

    There’s some great footage (modern) of PA474 and (contemporary) of Douglas Bostons heading out on a low level mission.

    It’s an interesting and unconventional take on the war film (the ending was so sudden and unexpected it had me shouting ‘what?!!’ at the screen and replaying the last few minutes to make sure I hadn’t missed something) but so much better than more modern ‘sexed up’ versions.

Viewing 15 posts - 91 through 105 (of 1,083 total)