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Viewing 15 posts - 226 through 240 (of 1,010 total)
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  • in reply to: Hurricanes! #861348
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    Participant

    I’ve said before, but once the supply of spar tubes dries up, which won’t be long, that will be it. Probably another three or four more.

    Bruce
    Just a questions. Is the tube they are using in recent rebuilds NOS or is it from a recent production run.

    Richard

    in reply to: Aircraft ID #863108
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    Participant

    I’d say Wellington too, compare with http://www.adf-gallery.com.au/gallery/albums/466-Wellington/P03860_001.jpg

    Certainly not Halifax.

    Certainly a Wellington and a Hercules Mk III powered one judjing by the intake just visible behind the prop.

    in reply to: Avro Lincolns into preservation in 1963 #876788
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    Participant

    Think its Aston Down. It is the only place in the UK that I remember seeing cacooned airframes but I stand to be corrected.

    Richard

    in reply to: Dove 8 ZK-DHW ex G-ASMG is For Sale #876919
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    Participant

    Are spars or the material to make spars available for Dove/Devons. I realise the job of replacing a spar would be cripling if you could get the material or perhaps trying to find a set of good wings but I bet their like hens teeth.

    Richard.

    in reply to: B-377 Stratocruiser – Project #879937
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    Participant

    The plan is to use one of several Stratocruisers that were operated by the Israeli Airforce, they were modified to a military spec including freight doors I seem to remember, but the conversion back to B-377 standard would be easier than starting with a C-97.
    Incidentally the Berlin Airlift Historical Foundations C-97 is close to being airworthy again. http://www.spiritoffreedom.org/

    Richard

    in reply to: Avro Tudor 2 windows #880360
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    Participant

    I know we have stayed away from Cherry Ripe’s original post but it is all relevant I think. What I find incredible is that some of the skin cracking was there right from manufacture and had already been stop drilled. I spent my entire working life involved with metal airframes and the only occasions when cracks appeared in something you were making was if you bent it too tightly or bent some material that was too hard for the bend you were attempting, stop drilling was only ever used on secondery structure like fairings and cowlings and even then very rarely. So what were DH doing to a skin panel to cause cracking in the first place.
    Pressurisation loads on a fuselage structure are huge and many airframes have a cycle life limit imposed when they are designed, sometimes extended when in service data is known or the manufacturer carries out structural testing. The Trident was an example of an airframe with a cycle limit of 22,000 (from memory) which BAe didnt budge from as too few were built to warrant any expenditure.
    Richard

    in reply to: Tiger Moth crash 3 March in Italy reports of two injured #886358
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    Participant

    Being used as a camera ship to take pictures of this perhaps http://www.flightjournal.com/blog/2014/04/17/replica-caproni-ca-3-makes-test-flight/

    Richard

    in reply to: RAF Medmenham and a slippery Mosquito #890748
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    Participant
    in reply to: 2014 – RNHF Sea Fury incident at Culdrose #890920
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    Participant

    TF 956 was abandoned at Prestwick, because standing orders forbade attempting a one- leg- down landing, as previous service experience had proved it to be very dangerous.

    Yet here we see such a landing, with no particular unexpected issues.

    I wonder if he would have parachuted at Culdrose, had he known about the undercarriage.

    I still miss TF956, she really had a good Centaurus whistle when she was shifting !

    Propstrike

    A very different situation to TF956, in that case they knew one leg was locked down and the other was stuck up, they also had lots of time to think about it.
    In the recent event the initial plan was to land on the wheels, by the time the plan had changed I think he was too low to jump.

    Richard

    in reply to: What if Germany continued the blitz? #914809
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    Participant

    And the question would be whether the Miles M20 could have reached operational status and would it have been any good.

    in reply to: Airco DH6 #921647
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    Participant

    That’s definitely a Dh6 fin and rudder in the pix…have to make further enquiries. Some of the sixes went to Greece ,some to Sweden or such. I found the engine but as yet I don’t possess it . Still researching…..crashed Mooroopna Victoria 1932

    My wife’s grandfather flew DH6’s in Sweden in the early 1920’s for P.O. Flygkompani, his name was Ralph Park.

    Richard

    in reply to: News at MeierMotors GmbH / Bremgarten South Germany #925644
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    Participant

    If you look closely at some of the pictures of uncowled 109s posted above, you will see that the lower engine bearer, wing, and main undercarriage attachment points all converge at the same point, a notorious weekness on an aircraft with a narrow-track which is prone to groundlooping, as Robs Lamplough (amongst other owners) found out to his cost.

    I do not think combining all the high load attachment points in on place can be described as a weakness, in fact it is common design practice on many aircraft, whether built from metal, wood or composite, and is fundamental to achieving a compact, strong, light structure. Obviously several accident scenarios will potentially cause damage to a single attachment fitting but that might be an advantage when it comes to a repair.

    Richard

    in reply to: How do you make a fuselage frame? #856518
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    Participant

    That Youtube clip posted by Oldspitty is exactly as it is done. If you were making frames for an airworthy project the metal would need heat treating following the shaping process but for a static build it could be left in the soft state.
    The wooden forming blocks that each frame is formed around will obviously need to be different for each frame required but with modern CAD and laser technology this is less of an issue than it was.

    Richard

    in reply to: Sandringham at Lee on Solent #892888
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    Participant

    I think it was the Solent Sky aircraft that made its final journey to the museum where it now lives.

    Richard

    in reply to: Metal ailerons,, #912083
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    Participant

    I was wondering,, with the vast improvement in the Spitfire’s handling when changing from canvas to metal ailerons, would the Hurricane have benefited from the same modification or was the wing design of the hurricane not conducive to this change? And was it ever tried? Seems the hurricane got shortchanged in the “mod” dept. sometimes, wonder how it would have done with a Griffon up front too.

    The Hurricane airframe was was from an earlier generation in both structural design and aerodynamic form, at the speeds it operated at its fabric ailerons were eminenently suitable. So metal skinning would introduced a component that was more difficalt to repair/manufacture as well as a weight increase for no gain.
    Spitfire rudders and elevators remained fabric covered for good reason.

    Richard

Viewing 15 posts - 226 through 240 (of 1,010 total)