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XN923

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Viewing 15 posts - 1,036 through 1,050 (of 1,083 total)
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  • in reply to: Shackleton in progress #231251
    XN923
    Participant

    shame most of the interior wont be visible. Have you considered doing half fusleage with interior to show your work?

    Maybe in the future, but the work wasn’t that good! I did a lot of work on the interior whilst under the misapprehension that you would be able to see bits and pieces of it, and eventually just did it all. Sadly there’s so little light in there that you can’t really see anything, though if you peer very closely you can see the cockpit and the area behind this including the navigator’s table and the engineer’s station, which few kits get right.

    I vaguely considered trying to rig up a battery and torch bulb inside so you can see things but it seemed a bit complicated. Again, I may try this in the future.

    in reply to: Shackleton in progress #231252
    XN923
    Participant

    Hope you don’t mind my asking, but what made you choose the vac-formed Contrail kit over the Frog/Revell injection moulded one?

    A number of reasons, none of them all that good. I bought my Dad a Modelcraft Shackleton, which I believe to be a reboxing of the Frog/Revell (though I’m not 100% sure of that) and was very disappointed at the quality (or lack thereof) of the moulding and the hideous rivet detail, and felt that a lot of work would be needed to bring the kit up to an acceptable level. Also I wanted to model the Phase 3 version with the different outer nacelles to house the Viper jet engines, and no kit exists with this mod.

    So starting from the basis that I would need to do a lot of work, I thought I might as well have a crack at a vacform, which I had not attempted before. Silly though it sounds, the Contrail shack is not a bad vacform to start off with. Consider: on a 1/72 Spit, you make an error of around 1mm – this gives you a fuselage looking like a banana already. A much bigger aircraft gives more room for error and potential to be rescued… Plus the plastic is nice and thick on a kit this size which makes it easier to work. The four engine nacelles make things a bit trickier, but not hugely so – plus I was going to be reworking the outer ones extensively anyway.

    Anyway, more pics later today.

    in reply to: Airfix 1:72 Concorde #231752
    XN923
    Participant

    Consensus seems to be that it has potential, but was a little disappointing given the hype. Seems like it can be built into a fantastic model, but with a little more work than a Tamigawa – main problems are fit around the engines and the nose tilt mechanism is gimmicky and too weak to work well without breaking.

    in reply to: Shackleton in progress #231753
    XN923
    Participant

    Thanks! It’s a bit further advanced now and more photos will be available after the weekend. However, I’ve been a bit caught up with kits for magazine reviews recently. The kit includes a lot of scratchbuilding (entire interior, glazings and modified outer nacelles to represent a phase 3 MR3 with Bristol Siddeley Vipers) and home-made decals to boot.

    XN923
    Participant

    This may not sit comfortably with a lot of people, but Miles Aircraft were just not up to the task.

    I’m not sure this is necessarily true… Miles had a number of very successful projects, including some very innovative ones, under their belts including the M20 which was designed, built and tested in a very short space of time, was faster than a Hurricane and had much greater range. Most of the basic and advanced trainers supplied to the RAF at the time were Miles products (Pierre Closterman noted that the Miles Master was considerably better than the T6) and they were in a position to tender for the Brabazon products. I can’t see that Miles would have been awarded the contract had they not been up to the task.

    And look at Bell around the same era – their first attempt at a ‘high performance’ aircraft, the P59 Airacomet was dreadful – one test pilot described it as ‘ponderous’. It was so lacking it never saw frontline service – and yet this was the outfit which first broke the sound barrier.

    Also Powerjets was a one man company ie Whittle. Now although he was undoubtedly a genius, at that time (even by his own admission) he was a burnt out man on the edge of a nervous breakdown.

    This is undeniable – and I think the crux. I can’t see how the project would have been completed without Whittle – although that said, an engine had been completed and as a modification of an existing and proven design rather than an all new item was a path deliberately pursued by Whittle as the easiest way to get at the power needed to break Mach 1.

    Now as for claims of near complete (or even 50%) I have my doubts. When you look at project expenditure by 1945, £73k which represent on 23% of the total projected (estimated at £323k)airframe costs and I really doubt this would have funded much actual prototype construction. I would expect at least half (and probable closer to two thirds) of the project cost to be spent to get the prototype out of the hanger doors.

    The costs were of a small design team (around 40 people) and tests of the ‘Gillette Falcon’ with M52 wings and tail. The total projected costs were as I understand it £250,000 rather than £323,000. There are photographs of completed mock-ups and the accounts I have read do refer to two airframes ‘substantially complete’ although I have no evidence to hand for this.

    This of course begs the question of just what did Miles spend 3 years doing? …… The X1 was flying in just 2 years…..

    The Miles design team was small, and Britain had been at war for nearly four years when the project was started. I have no details of the Bell team but I am willing to bet they had a lot more resource at their disposal. Furthermore I don’t know what research Bell had to do, or whether they gambled and got their sums right more or less by chance. The Miles team used the only existing research on supersonics – i.e. bullets and shell casings – and built a flying demonstrator of the wings and tail surfaces.

    I also understand that a very well known and respected aviation author has spent time in the states looking for evidence of M52 technology transfer. Despite extensive searches in the US National archives and Bell Aircraft own archive he found nothing!

    No real surprise given that the data wasn’t handed to Bell until after they had completed principle design work – with conventional elevators. However, given the jury rigged nature of the X-1’s all flying tail I don’t doubt that if there was any of the Miles design in the X-1 this was it. Looking at the two designs afterwards, the M52 actually has slightly better area ruling than the X-1 – again, purely by chance.

    On balance I think Ben Lockspears decision to cancel M52 was about right given the information available to him

    Again, probably right but a shame nonetheless.

    Had he left the Project running I think it would have certainly failed to go supersonic before the Bell X1, and may not have even flown.

    Based on what? On balance I agree that it would have been a stretch to beat the X-1 into the air and even more to Mach 1. However, I can’t help feeling that the Vickers project proved that the M52 was eminently capable of flying and breaking the sound barrier. I don’t see any proof of significant mismanagement at Miles and although Whittle had left the project, the design work on the engine was done.

    For me the tragedy is not that Britain was beaten to the sound barrier – I think that’s an optimistic assessment. However, had the aircraft flown the British aircraft industry could have been moved five, even ten years ahead of where it was in the mid-late 50s, certainly in terms of supersonic interceptors. I still wonder though what could have been achieved by Vickers had they been allowed to continue with the models – swept wings? delta planforms? Even a successful tail-less design? And pilotless aircraft may have been a lot more advanced than they currently are.

    XN923
    Participant

    I’ve been reading the RAE’s report into the 1/3 scale M52 rocket-powered tests, and it makes interesting copy. It makes the point that the programme was somewhat overtaken in its primary aim (seeing what happened to an aircraft as it approached and exceeded the sound barrier) by the Bell X-1, and was therefore cancelled. However, it makes the point that the Vickers engineers learned a lot about operating pilotless aircraft, and that this was more or less thrown away by the cancellation. Typical – another lead lost.

    Apparently the first test airframe was ready to fly in mid 1947, but was lost when the launch aircraft (a Mosquito) flew into a storm cloud – the testbed fell off and is currently residing somewhere under the Bristol Channel. A second was produced and was launched in October 1947, but the rocket failed to ignite. A year was then spent developing the rocket propulsion (originally the point of the project was to use existing solid fuel rocket motors which proved impractical so a liquid fuel system had to be developed from scratch. Airframe number three flew in October 1948 and achieved around Mach 1.38.

    Sadly, the project was cancelled after a single successful flight, which removed the possibility to test different airframe layouts, wing and tail planforms, autopilot settings and tail incidence. It’s intriguing to think what might have been achieved with a few more flights.

    Nevertheless, the flight proved beyond all question that the M52, as designed, would have worked and would have been capable of breaking the sound barrier – at least aerodynamically, whether the engine would have been equally successful is open to debate, although projections suggest it would have had thrust to spare. A shame as the RAE report betrays a great deal of uncertainty about the efficacy of the M52 design before the rocket model flew.

    At least three huge opportunities lost then. It’s clear that the all moving tail specifically as a device to aid control in transonic flight was developed independently by Miles. The key question is whether Bell came to the same conclusion on their own or not.

    XN923
    Participant

    A major part of the Miles decision was money. The new labour government in 1946 had many things on its mind and aviation research could be seen as a luxury. As the cold war began to hot up, the need to keep in the forefront of research lead to a reappraisal.

    Also I believe Frank Whittle left Power Jets at a critical stage in the programme – it was quite possibly felt that without Whittle, the programme would not work. Certainly, cancellation came only days after Whittle had left Power Jets. I think two airframes were nearing completion and the cost of going ahead with manned flights was arguably a lot less than the subsequent unmanned, radio controlled, rocket powered programme. (It was estimated at the time that completion would cost £250,000 – costs up to that point had been around £73,000, while the unmanned programme cost £500,000).

    However, this programme proved the effectiveness of the M52 layout. One source I’ve read says the rocket powered model flew in October 1947, one month before the X-1 broke Mach 1. The RAE report on these trials was dated 1950.

    The official reason for the cancellation was cost. (source: Mike Hirst, article based on lecture given to Royal Aeronautical Soc)

    in reply to: Help – Vampire T22 interior #1394159
    XN923
    Participant

    I heard somewhere that the emergency hydraulic hand pump between the seats was red – is this the case?

    Presumably the Mk4 bang seats had the ‘B’ type handle rather than the ‘D’?

    XN923
    Participant

    I’m sure I remember reading an account of the early flights of the X-1 by Chuck Yeager. According to this account, the aircraft was first flown without the all-flying tail and was nigh-on uncontrollable. It was only then that the all moving surfaces were ‘jury rigged’ to the aircraft and this enabled Yeager to break the sound barrier in a shallow dive while retaining control.

    If this is the case, it bears out the idea that the all-flying tail was not part of the existing design of the X-1, and makes it look like the research came from elsewhere. In fact the account made it sound like the all flying tail was a last throw of the dice to see if the X-1 could be controlled at all in transonic conditions.

    Obviously I can’t point to this account (does it sound familiar to anyone else?) and it certainly doesn’t say that the research came from Miles. However it does seem like it wasn’t taken seriously until serious stability issues had come to light after the aircraft had already been flown. Could it be that after the initial problems, Bell engineers went looking through the Miles research for leads to a solution?

    in reply to: Heads up – In Search Of Speed BBC2 Sunday #1395010
    XN923
    Participant

    I’ve recorded this, I dare say I will watch it even if saddened by the one sided portrayal it sounds like. The land speed programme mildly annoyed me (though I was more confused really) that D. Campbell had been completely written out of the story, and no mention was made of Breedlove’s first ‘record’ being unratified because the jet car was not recognised as a car at the time… However, this is perhaps understandable as the Brits weren’t really around for the massive explosion in speed and that generation really did belong to Breedlove and Arfons (though Breedlove’s latest car was trounced by Thrust SSC, another fact the programme makers seem to have forgotten when mentioning CB’s latest attempt at the record).

    …However, writing the DH108, Miles M52 and Fairey FD2 really is a piece of revisionism worthy of Hollywood. Who wrote these documentaries? Was it the same team that did ‘U51’??

    Well, two can play at that game …Going home to watch David Lean’s ‘The Sound Barrier’ on continuous loop.

    in reply to: Airfix 2006 releases? #232012
    XN923
    Participant

    Someone on PPrune reckons Airfix are going to release a 1/72nd scale Nimrod and a range of 1/48th scale Canberras next year. Anyone know anything more? While I’m at it, if you could choose just one new kit (anything) for next year, what would it be? How about a 1/72nd DH Sea Hornet? Short “Empire” boat? Supermarine Swift?

    Try looking on the airfix.co.uk forum – the ‘official airfix messages’ folder has full updates on this.

    Hannants are taking pre-orders for the Nimrod which is reckoned to be a limited run and likely to cost around £38.99

    in reply to: Ireland's Secret WWII airfields (2005 Zombie) #1397977
    XN923
    Participant

    What a fascinating thread. My wife is Irish and the view that has always been protrayed to her, by family members and teachers, though not via any documented evidence, was that Ireland was in general ‘neutral on the side of the Germans’. (Anecdotes abound of U-boats refuelling in Irish ports before going out to sink British shipping etc.) This thread I think very much gives the lie to that (or at least some of it).

    I think the unfortunate thing is, as Eric Mc pointed out, that support of the British during the war by individuals and state alike, didn’t fit with the ‘ourselves alone’ history of the Irish Republic that’s grown up since independence in which, perhaps quite rightly, the emphasis is on freedom from the British oppressor. This seems to have led to a bit of denial around the contribution of the Irish in the war. I heard on Irish radio a little while ago of an Irish Spitfire ace who felt compelled to keep his medals in a drawer and not speak of his involvement in the war until very recently because he felt it would lead to animosity towards himself and his family. While some Irish were probably ‘neutral on the side of the Germans’ purely for ‘my enemy’s enemy…’ reasons, it leaves a bitter taste in the mouth that those who took the opposite view, fought and died to save Europe, have been downplayed, overlooked and ignored.

    in reply to: HMS Nottingham #2071328
    XN923
    Participant

    There is also the issue that the Navy might well be a lot more likely to be able to find someone sufficiently capable to do the job. As far as the electorate replacing failing governments, there is the pertinent question of will any of the alternatives do the job any better?

    in reply to: Most weird Luftwaffe 1946 Project #1400866
    XN923
    Participant

    I can’t help feeling that the flurry of design ‘creativity’ in the latter part of the Second World War in Germany was both a late and desperate reaction to the stagnation in design that had occurred hitherto, and a dangerous distraction from the real business of the steady development of new and existing aircraft. The Luftwaffe and the German aircraft industry was used to fighting and winning wars quickly, usually with weight of numbers and a degree of technological superiority. They were not practiced at winning an arms race – look at the two main fighters that Germany ended the war with, both designs that were around in 1939 (Bf109 and Fw190), while they never perfected a true heavy bomber for the whole duration of the war. I see what’s referred to as ‘Luftwaffe ’46’ as a desperate throw of the dice, trying to make up lost ground with a slew of radical concepts that would render the allied air forces obselete. If it worked the war could have gone a very different way. If it failed (which it did), valuable design time which should have been used developing the He177 into an effective tool, or genuine Fw190/Bf109 replacements was lost.

    Some concepts might have worked – look at the Ta 183, which bears more than a passing resemblence to the MiG 15. Alternatively, as has been stated, flying wing types couldn’t be made to work by US and British designers, and types that were based on this technology ended up looking a lot more conventional than the concepts they were based on.

    The idea of Luft ’46 is by its nature intriguing, but it is also a chimaera in my view. Very few or none of the designs would have made it off the drawing board, fewer still to service.

    in reply to: Buchon in RAF colours for BoB film #1402313
    XN923
    Participant

    “Repeat please!”

    TWO…. THREE… ZERO….!!!

    Thanks for the pics. I was only asking about this a couple of weeks ago and I think the old threads on this subject must have been archived.

    Resourceful use of the available airframes anyway.

Viewing 15 posts - 1,036 through 1,050 (of 1,083 total)