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John Aeroclub

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Viewing 15 posts - 661 through 675 (of 2,313 total)
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  • in reply to: Prop hub markings #901268
    John Aeroclub
    Participant

    No 4 Training Sqdn flew quite a variety of types in WW.1 including the Avro 504 A’s, J’s and K’s. Brush made lots of 504s. The hub which has obviously had the face laminated on is of the 8 stud type typical of a Monosoupape engine. Brush also made Maurice Farmans.

    John

    in reply to: Miles Sparrowhawk G-ADNL #950986
    John Aeroclub
    Participant

    I’m surprised no one mentioned that the Miles House colours were Cream and Red. 91regal That is a nice model collection of real aeroplanes, from Crusader to Kitten.

    John

    in reply to: Farman Biplane aileron query #972664
    John Aeroclub
    Participant

    It’s quite clear that on the original photo virtually nothing of the fine piano wire rigging is visible. It must be there because that structure would not hold together without it! In fact the guy at the back is trying to have the tailplane away. The top ailerons are drawn down from their extremities hence the control horns are only on the lower aileron to give the required leverage with cables to the leading edge of the lower plane.

    John

    in reply to: Farman Biplane aileron query #973822
    John Aeroclub
    Participant

    Later some aeroplanes with ‘balancer ailerons had bungee cord tensioners fitted to the top sides so they did not droop at rest. Good the see James back. Thank you again for letting us see the Boxkite under construction on my last visit to Aus.

    John

    in reply to: Why Walrus? #984746
    John Aeroclub
    Participant

    Nup, Westland Walrus was already there in 1925… maybe Walrus was code for something big, fat and ugly, with apologies to all Walri and Walrus lovers out there.

    Ooh. that’s from the AP, You don’t happen to have the same for the Wallace do you? Or anyone?

    John

    in reply to: 1966 Hunter Ejection Seat #987229
    John Aeroclub
    Participant

    Mk 6 MSB, early Buccaneer.

    John

    John Aeroclub
    Participant

    I wish you luck in your search. I don’t wish to speculate but perhaps this will help you understand a little the problems of a successful escape from early jet aircraft.

    Rather than bailed out he would have ejected as the Meteor Mk.8 was fitted with a Martin Baker type 2E ejection seat. The operating parameters of these early seats weren’t as good as later types and it could be that he ejected too late or too low for the seat parachute to properly deploy. The following is largely from Eject Eject! by the late Bryan Philpott. “It is notable that during 1952/53, 30% of the 32 ejections of RAF airmen proved fatal.” These early seats were not the easiest thing to use. The seat was a relatively simple device and did nothing more than get the occupant out of the aircraft and then he was left to his own devices. The airman had then to separate himself from the seat and deploy the parachute despite the shock and dis-orientation of the ejection and there was only 5 seconds before the seat and occupant hit the ground from around a 1000 feet.

    I hope this helps

    John

    in reply to: Why Walrus? #987749
    John Aeroclub
    Participant

    As a RN reconnaissance aeroplane it would have an animal name, Avro Bison, Fairey Seal, Parnall Panther, Blackburn Airedale and Supermarine Sea Otter (the Sea Otter as distinct from the fresh water Otter).

    John

    in reply to: An odd propeller #987808
    John Aeroclub
    Participant

    Again thank you all for the input. Yes I’m now convinced that it is one half of a lapped propeller (or should it be Airscrew). The HP 42’s by the way used the two types of four blade props. The HP.42W (Western) for European destinations used the pukka fixed construction prop and the HP.42E (Eastern services) used the lapped type because it was for convenience of transport of propeller spares over the longer distances by air.

    The prop in question is 10′ 9″ dia so it is too small for a HP.42 and I still have no evidence of production Jupiter’s using the 12 stud type of hub except for the original Cosmos. Eagles and Falcons of which some versions could run left hand (anticlockwise from the pilot) had 8 bolt hubs and the big Condor did run anticlockwise but again it’s a matter of finding a Condor engined aeroplane with a small four blade prop. All the ones I can find have props approaching 14′ in dia. So it’s the 12 bolt fixing which is the key.

    John

    in reply to: Why Walrus? #987942
    John Aeroclub
    Participant

    Except Westlands had, had a Walrus, the carrier borne derivative of the DH.9. Even uglier than the “Shagbat”.

    John

    in reply to: An odd propeller #989481
    John Aeroclub
    Participant

    I have just added further photos to the opening post and here is the info Bulldogbuilder requested.

    Prop Dia 10′ 9″

    Diameter of Hub: 13”
    PCD of bolts 9”
    Bore 4”
    Depth of boss 4 710”
    Max blade width 10 14”

    John

    in reply to: An odd propeller #989492
    John Aeroclub
    Participant

    Thanks for the input. interesting point re the brass locators The dia is 10′ 9″ and it’s the 12 stud fixing which is unusual, Bristols are usually 8 or 10. The rotation is certainly “Bristol fashion”

    John

    in reply to: An odd propeller #989634
    John Aeroclub
    Participant

    Thanks for the reply Ed. I have requested the information. I have been scouring my refs for the fixed pitch prop (wood 2 bld) fitted to the Blackburn Shark. Does anyone have a close front shot of the AW Tiger without the small spinner and not the three blade type?. I need to be able to see the number of bolts.

    John

    in reply to: The All New 2013 "Wot Plane" (see post 4 for rules) #947765
    John Aeroclub
    Participant

    Salmson engine looks to be an obscure Hanriot or Bleriot Spad product.

    John

    in reply to: WW 1 aero-engines in France #949352
    John Aeroclub
    Participant

    I seem to recall that the engine was either an early Benz or an Argus (I didn’t have the time to make a reasonable examination at the time). It thought it could be linked to a German two seater crew brought down in early 1916 who are buried in a cemetery near the old Naval 8 field of St Eloi. I think they were brought down by a Gunbus of No 11 Sqdn. I have more detail stored somewhere.

    John

Viewing 15 posts - 661 through 675 (of 2,313 total)