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dhfan

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Viewing 15 posts - 2,716 through 2,730 (of 3,092 total)
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  • in reply to: Leuchars airshow 2003. #2079823
    dhfan
    Participant

    Originally posted by ken_murray
    Alistair, methinks you confuse me with someone else, not sure which bookseller you mean.

    Ken

    Alastair was right, but you’re the wrong Ken!:)

    in reply to: Walrus/Seagull V #2080377
    dhfan
    Participant

    There’s a good article and pics of it in the August 2003 Flypast.

    in reply to: Memories of a two year old #2080489
    dhfan
    Participant

    My parents are, or in Dad’s case were, the same sort of age as Kev’s Dad. Both families lived in Watford, where I was born in 1952.
    Considering how close Watford is to London, it seems to have got off relatively lightly. Like Steve, the house at the bottom of my Dad’s garden was destroyed, I think by a bomb although it sounds a bit odd if it was just one. Half a mile or so down the road was the worst incident in Watford during the war. A V1 came down in Sandringham Road and apparently careered along the road before exploding. The street was virtually destroyed and a lot of people were killed. A mile the other way Leavesden was turning out Halifaxes and Mosquitos.
    There were 3 bomb craters in a park a few minutes walk from the house that I remember seeing well into the 60s.
    Both Mum and Dad said one of their clearest memories was the sky going dark with aircraft for the Airborne attack on Arnhem.

    in reply to: Leuchars airshow 2003. #2080524
    dhfan
    Participant

    Staff car looks like a Hillman at a glance. I’ll dig a couple of books out.

    in reply to: Walrus/Seagull V #2080528
    dhfan
    Participant

    I thought the Flypast article inferred they were virtually identical. Wasn’t it that the RAAF had previous Supermarine Seagulls so they just gave it another number but the RAF hadn’t had any before.
    I’ve got the Putnam Supermarine book. I’ll look later and see if it’s explained any differently.

    Just looked at the book.
    The prototype Seagull V was also the prototype Walrus. Can’t get much more identical than that!
    There are slight dimensional discrepancies listed which seem unlikely, possibly transcription errors.
    The only real difference was the model of Pegasus fitted. Seagull V had 625hp and the Walrus 750hp.
    The Walrus was originally ordered as the Seagull for the RAF but it was amended before deliveries began.

    in reply to: General Discussion #395553
    dhfan
    Participant

    Discovered the other day that a friend in my local played drums on “There’s No One Quite Like Grandma”.

    He’s obviously doesn’t publicise it as he wants to carry on living.

    in reply to: Who is the most famous person that you have met? #1974662
    dhfan
    Participant

    Discovered the other day that a friend in my local played drums on “There’s No One Quite Like Grandma”.

    He’s obviously doesn’t publicise it as he wants to carry on living.

    in reply to: Merlin/Griffon question #2081547
    dhfan
    Participant

    Captain Eric ‘Winkle’ Brown CBE.DSC.AFC.RN has made 2407 carrier deck landings, 2,721 catapult launches and flown 487 different types of aircraft. These are all world records.
    He served in the Fleet Air Arm in WW2 and was on board HMS Audacity when it was sunk.
    He was based at Farnborough as a test pilot for 6 years from 1942 and has a list of decorations as long as your arm, and longer than his. I think his words are ‘diminutive stature’.
    He was the first person to land a twin-engined aircraft (Mosquito) and the first to land a jet (Vampire) on an aircraft carrier.

    For a potted history

    http://www.setp.org/EBrown.htm

    US carriers have the bridge on the right too.

    in reply to: Merlin/Griffon question #2081841
    dhfan
    Participant

    Originally posted by Janie
    HP57
    I really like old Winkle’s answer. However, maybe my brain is out of gear here, but I thought Griffons swung to the right on take off and the bridge is on the right! Am I misunderstanding something here?
    J.

    I thought that too but as I’m not a pilot and can never remember which way the effect works, or work it out, I thought it was brain failure on my part.

    in reply to: Merlin/Griffon question #2081856
    dhfan
    Participant

    Ungeared engines came first. At that time propellor rotation was the same as crankshaft. Look at a Cirrus, Gypsy etc.
    The propellor rotates the opposite way to a Merlin. The Merlin and British radials all have conventional rotation at the crankshaft.
    American ungeared engines rotate backwards – Harvard, Beaver…

    I base my comments (forwards/backwards) on the tens of millions of car engines that have been built in the last century, the convention is clockwise at the front of the crankshaft.

    “For british engines, THE MERLIN IS THE EXCEPTION TO THE RULE…”
    That statement is only true of the propellor, not the engine, and even then there’s the ‘R’, the Kestrel…

    HP57
    If “Winkle” says that’s why it’s good enough for me.

    in reply to: Merlin/Griffon question #2081990
    dhfan
    Participant

    Janie

    As Mark12 said, we should be talking about crankshaft rotation.
    The Griffon runs backwards.

    Strangely, the ‘R’ apears to have conventional rotation (can’t find a picture of a Buzzard) so it was obviously a conscious decision to reverse the Griffon.

    Just had a glance at Bill Gunston’s Encyclopaedia of Aero Engines.
    Looks like the Sabre had epicyclic reduction too.

    in reply to: Merlin/Griffon question #2082212
    dhfan
    Participant

    Speaking as a left-handed person, we’ll have less of this sinister.

    The Merlin 131 was the one with the idler gear.

    The Merlin runs the right way, ie clockwise from the front, as the reduction gearing has reversed the rotation.
    Generally speaking, that’s the way infernal combustion engines are expected to run. Whether that’s just a European idea I don’t know.

    American aircraft engines appear to run backwards.
    Radial engines have epicyclic reduction gears (as opposed to spur) which don’t reverse rotation. I’m on slightly dodgy ground here as I can never remember how an epicyclic box works. I used to ask my Dad once a year or so and understand it for about a week, hence the annual request. Unfortunately, as he died 17 years ago, I’ve comprehensively forgotten this time.
    Which way does an Allison go?
    I think I read once that RR were hoping to sell Griffons to the Yanks and that’s why they run backwards. Seems a strange idea and I haven’t a clue where I saw it.
    Do American car engines run backwards?
    I have a mate with a (supercharged!) Camaro but I don’t think he’d appreciate a call at this time.
    I’ve just realised that model aircraft engines run backwards as well. American influence again?

    in reply to: Duxford get-together 2 #2082714
    dhfan
    Participant

    Myself and Mrs (sort of) Dhfan are still coming.

    The only problem is my propensity for being late everywhere, made worse by the 2 hour drive involved.

    in reply to: A Century of Flight – an Afternoon of Ignorance… #2084281
    dhfan
    Participant

    Originally posted by CompassCall
    Too bad they don’t allow rubber bullets at air shows.

    Why rubber?

    Told you I was getting more right-wing as I get older.

    in reply to: New Duxford Display Axis #2084467
    dhfan
    Participant

    Doesn’t sound a particularly briliant idea to me either.

    Originally posted by SteveYoung
    If it’s the former, phew! Although I have to say I’ve never heard of an aeroplane called a crane.

    Smart-a**e mode on:

    http://www.lancastermuseum.ca/crane.html

Viewing 15 posts - 2,716 through 2,730 (of 3,092 total)