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malc

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    Aerotech Supermarine S5

    in Works in Progress

    Posted · Edited by malc

    Hi Torben, Interesting debate, looking through my stuff (got more than I remembered.....!) I found an original paper copy of the S5 3 view in a book of collected drawings called 'Aircraft Archive - famous racing and aerobatic planes', so took a slightly sharper picture of the sections you show above to try and help the debate

    IMG_4894.jpg

     

    About the holes in my previous photo (!), it appears that the outer holes are surrounded by fixings indicating they are inspection hatches, the inner one has a 'duct' appearing out of it, which indicates it is permanently open - what puzzles me is the direction if the slash cut on the duct - it faces forward, indicating its an intake not an exhaust? I don't understand this as it would be very vulnerable to ingesting sea water....?  Theories welcome!!

     

    Malc.

     

    Hgggnnn, photo link didn't work, let's try again - if you click the thumbnail it takes you to a full res pic.

    Aerotech Supermarine S5

    in Works in Progress

    Posted

    When looking at references of the cockpit area the double rows rivets for the ribs are clearly visible and closely match he scale spacing I've done internally 

     

     

     

    My question is about these in relation the the rear bulkhead of the cockpit. I'd expect to see a vertical line of rivets line up with the rear edge, or may be just slightly behind to take into account the thickness of the seat rear cushion and headrest so that this bulkhead would be fitted directly against a rib. From this image (although) not 100% side on the rib looks like it's set back a good 6 inch +. The best plans I have (see last post) have these cushions resting up against the rear bulkhead. 

     

    From what the external rivet lines are indicating the only possible conclusions I can glean is that:

    1. Either the bulkhead is not fitted completely flush with the cockpit surround but set back to the near rearmost row of rivets and the the headrest (and seat rear cushion?) is deep enough to just show slightly in front of the cockpit surround.

    2. The rear bulkhead is somehow fixed to the same rearmost rib but in such a way that it's not riveted to the fuselage skin and set forward so it is flush with the cockpit opening.

     

    From all the images/videos I can see point 2 is the most likely as I can only see what appears to be flush fitted bulkhead in the headrest area - it that case I'm surprised it has no external riveting in line. Any thoughts, ideas, insights most welcome.

     

    Torben

     

    Hi Torben,

     

    Super work as always.

     

    About the seat, is it possible the seat is supported on a frame that projects forward of the bulkhead (like a spitfire)? To allow the seat to be raised for take off?

    Lots of images on Google showing the Spitfire seat frame!

     

    Malc.

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