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DeHavEng

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Viewing 15 posts - 1 through 15 (of 120 total)
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  • in reply to: Sally B technical problem? #1203381
    DeHavEng
    Participant

    No1 Engine made horrible grinding noises last year about this time. Sally B was on the ground for the rest of the season whilst they rectified the problem. Turned out to be oil starvation due to some idiot leaving a nut loose in the engine that became lodged in the oil gallery……all well documented else where in the forum and web.

    in reply to: Jet Fuel Question? #1207502
    DeHavEng
    Participant

    Legally if any aviation fuel is removed from an airworthy aircraft it can not be put back into any other airworthy aircraft. Jet A-1 is industry standard jet fuel i.e. has all necessary additives including deicing, you will very rarely now find jet fuel without a deicing additive already included. In answer to what can you do with it….jagger is right oil burning heaters are one, but as diesel and jet a-1 are basicly the same thing I’ve heard of people actually using it in their cars…albeit with alittle extra smoke than normal I gather:diablo:

    in reply to: Bristol Viper Engine Numbers #1230980
    DeHavEng
    Participant

    Bristol and Armstrong Siddeley amalgumated to form Bristol Siddeley in 1959. depending on when it was built it could either be an armstrong siddeley or a bristol siddeley as the Viper was developed by Armstrong in 1953 before the merger

    in reply to: Not a Spitfire #1163408
    DeHavEng
    Participant

    paint is either etch primer or zinc chromate primer. Etch is first paint to be applied to bare metal to improve adhesion, so is possible that is what it is. However it could also be Zinc Chromate, it’s not always pea green i’ve seen shades from dark green to mustard yellow. Again standard repair type paints

    in reply to: I would like an A-7 #1166494
    DeHavEng
    Participant

    Surely that’s standard fit Twinotter:D

    in reply to: Avon jet Engines-Re-Heat Versions. #1167547
    DeHavEng
    Participant

    :DFrom the Iris type afterburn nozzle I’m going to debunk all of you and say FD1 & 2 (Fairey Delta for those unfimiliar with the type)

    in reply to: Vampire and Venom pictures #1187682
    DeHavEng
    Participant

    Please feel free to update on present whereabouts of these jets, and what happened to Source?

    I do believe they were sold to a private collector last year. They remain at Bournemouth to my knowledge in the tender ministrations of De Havilland Aviation, supposedly with a view to returning some if not all to flight status, something of an uphill struggle given their dilapidated state the last time I say them. Incidentally one of the ex-source venoms was placed on the Bournemouth bypass as part of the Bournemouth Airshow.

    in reply to: DHA #1187636
    DeHavEng
    Participant

    Not working for DHA anylonger I couldn’t say with any degree of certainty, but I would suggest it might be something to do with them moving premises not so long ago.

    in reply to: Cunliffe Owen Concordia #1187640
    DeHavEng
    Participant

    good grief how on earth are you supposed to board that without air-stairs?

    in reply to: Engineering #1212896
    DeHavEng
    Participant

    don’t YOU realise that we need both type of ‘engineers’?! Paper and hands on. Do you really think that all degree holders pontificate about how great they are and do nothing?

    As a holder of a University degree in aerospace engineering and a full time maintenance engineer I know what has been the most useful when it comes to actually maintaining an aircraft. I’m sure a degree is entirely necessary and very appropriate when dealing with aircraft design and some aspects of it’s manufacture.
    However a degree will not tell you how to seal a leaking fuel tank, how to fit a flush patch to a stressed skin aerofoil, how to time a magneto, how to re-fabric a control surface or how to service a main leg using only things you have to hand. Those are all things you learn how to do with an apprenticeship or in my case through experience. Those skills are what keep aircraft flying, not knowing the lift co-efficient or the density of air a 30,000ft, and I believe the topic of the thread was originally about what would be best for a prospective hands on maintenance engineer.
    To clarify my statement about degree holders pontificating about how to maintain an aircraft with out having ever touched one. I can recite several situations where supposedly learned degree holders have recommended a course of action that would endanger the aircraft and lives of those on-board. These are people who have had years and years of experience holding a pen and paper, designing, thinking and analyzing data, not holding a ratchet and spanner and doing the job they tell other people to do. What looks good on paper does not always translate on the shop floor. In my experience the people with degrees who know the best way to manage aircraft maintenance are the line engineers who have work their way up.

    in reply to: Engineering #1215392
    DeHavEng
    Participant

    If what you want to do with your life is get hands on with aircraft then a uni course is pretty much useless, get an apprenticeship instead. If you want to sit behind a desk and pontificate about how great you are and how you’d maintain aircraft without actually having touched one then a uni degree is fantastic for making you look good.
    If you want to become licensed you need a minimum of 2 years on the job experience after any apprenticeship is completed. Uni qualifications count for diddly when you get to the CAA unless they are from an approved training centre of which I believe there are a mere 8 in the UK.
    And never, never, never, never, ever get into classic aircraft until you have atleast 10 years experience under your belt and can afford it. The pay is terrible, the aircraft are sods to work on and unless you are extremely careful they are unforgiving when you make a mistake.
    If you want my advice, get an apprenticeship with someone like BAe, BA, Virgin, Qinetic, DARA anyone like that. Serve your time and then go contracting for 5 years, get your licenses in that time with afew type ratings. Then work your way into the GA industry. From there THEN and only THEN if you are REALLY REALLY DEALY SERIOUS about classic aircraft do you want to be thinking about working on them.
    Yes the skills are rapidly dying out for classic aircraft, I am fortunate to work with the last people who did a proper training course and apprenticeship and they’re no younger than their late 50’s. I try and keep my eye’s open and learn as much as I can, but 20 years from now I’ll still be learning because there is always more than 1 way to skin the same cat.

    in reply to: Bournemouth – Sea Vixen Wow! #1222901
    DeHavEng
    Participant

    I to was at said airshow, however on the sunday:(. Murk? We could barely see the RFA vessel at the outer limit of the display area! In my opinion a real tragedy seeing as Bouremouth had planned such a great line up and only got one decent days weather out of it. If it’s on next year I pray for good weather as this one has real potential, perhaps an equivalent to Jersey for ambiance and Waddo for line up.

    in reply to: Sea Vixen Question #1222941
    DeHavEng
    Participant

    XP924 is indeed owned by drilling systems ltd of which DHA is a sister company

    in reply to: RAF heritage flight #1227494
    DeHavEng
    Participant

    what about the Vulcan flypast with Lanc at Waddo this year, or the Sea Vixen flypast with Seafire and Jet Provost at HMS Ark Royal’s commisioning ceremony last year, or the Avon Trio at southend afew years ago (Hunter [Miss D], Canberra and Sea Vixen. Or even the Gnat flypast with Red Arrows some years ago on their anniversary. Give me awhile and I’m sure we can think of afew more.

    in reply to: Sea Vixen Question #1232450
    DeHavEng
    Participant

    Think you’re right, the fairing would be an attempt at a clean aerodynamic line, covering pipework, trunking, perhaps wiring too, but it does look rather heavy-handed on this photo link posted earlier: it looks more agricultural than aeronautical!

    http://www.cockpitmania.co.uk/salewant.htm

    It would be interesting to see if any cutaway drawing of the Sea Vixen showed what this lot covers. Does the new Air-Britain book on the Vixen provide any clues? I haven’t managed to get a copy yet. 🙁

    The fairing covers 2 bleed air pipes, one goes to the external surface of the windscreen for rain dispersal and de-icing and the other to the inner surface for de-misting.
    As for the heavy, bolted on look of it, the raised portion at the front provides a windbreak and boundary layer seperator, to allow the rain dispersal and de-icing bleed air to do it’s job.

Viewing 15 posts - 1 through 15 (of 120 total)