I was bored last night so I designed a seaplane

Discussion in 'Aircraft Design / Aerodynamics / New Technology' started by cheapracer, Sep 18, 2014.

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  1. Nov 22, 2014 #61

    Himat

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    Revoking an old thread as I managed to find pictures on the internet of a somewhat similar airplane. I did know I had seen the pictures in a book, but I had to find the pictures in the book before I managed to search and find these pictures.
    The plane is the Sabac M1.

    sabak1m-1.jpg
    sabak1m-1.gif
     
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  2. Nov 22, 2014 #62

    henryk

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    Last edited: Nov 23, 2014
  3. Nov 23, 2014 #63

    tunnels

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    Now that's getting closer but its still a mile away !!very interesting for sure!!
     
    Last edited: Nov 23, 2014
  4. Nov 23, 2014 #64

    highspeed

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    Then why don't you get us a mile closer? Post a sketch of what you're talking about, because I don't understand your point.
     
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  5. Nov 23, 2014 #65

    cheapracer

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    That's awesome Himat, thanks for the find!

    Looks like it would be just as happy on snow as well.
     
  6. Nov 23, 2014 #66

    Himat

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    In the book "Russia's Ekranoplans; The Caspian Sea monster and other WIG craft" it says that the wings could be detached and the hull used as a powered "sled" or maybe "airboat" Russian style. I'll guess to make it "amphibian" was part of the design.The plane crashed on the fifth flight, but no details was given. Maybe Henryk can find more from Russian Sources.
     
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  7. Nov 23, 2014 #67

    cheapracer

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    They didn't put the wings back on? :gig:

    Thanks again, design is more to what was in my mind when I started the thread.
     
  8. Nov 23, 2014 #68

    henryk

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  9. Nov 23, 2014 #69

    Aesquire

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    One of the issues with Ekranoplans is the short wingspan made some twitchy in roll when/if they got out of ground effect.

    So the Ekranoplan folk asked the airplane folk for an autopilot to help. The airplane folk told them the Soviet rules forbid using an autopilot below a certain altitude....... so no.
    That may be apocryphal. .......... but sounds like typical bureaucracy.

    Ekranoplans that can't get well out of ground effect are trapped where they are made. Since it's one of those concepts that work better the bigger.... ( like airships ) the result has been giant machines stuck on lakes and seas never to do the job intended.

    Sounds like a real rush to fly in ground effect over land. Until you run into a hill you can't climb over.

    I will admit the idea has it's attractions. High speed ships offer great potential for military and commercial use.
    High fuel consumption made them unattractive to commercial use but the ideas for amphibious assault or Anti ship use kept designers busy for decades.

    Question. Is the Spruce Goose really an Ekranoplan ( based only on observed performance ) or a flying boat? (Based on design goals )
     
  10. Nov 23, 2014 #70

    cheapracer

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    Modification Sabaki-1M


    Wing span, m 9.00
    Length, m 6.30
    Height, m 2.00
    Wing area, m2 10.60
    Weight, - empty 320kg
    - maximum take-off 700kg
    Engine Type, 1 x PD M-332
    Power, HP 105
    Maximum speed, km / h 140
    Crew 2
     
  11. Nov 23, 2014 #71

    tunnels

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    wow one down !! next please !
     
  12. Nov 24, 2014 #72

    henryk

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    -sorry=at 5-th fly test!
     
  13. Nov 24, 2014 #73

    Sockmonkey

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    Yeah, with WIG craft the main potential is big ones hauling cargo across the ocean at airplane speeds, and yes the old soviet bureaucracy really was that messed up.
     
  14. Nov 25, 2014 #74

    tunnels

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    After enlarging scaling and dissecting the pictures and doing some quick sketch's yes that hull shape would have been for snow and slush but not good for water at all ! it has some nice shapes to it that's for sure and very interesting , almost a lifting body design !!
    Well done the Russians !!
     
  15. Nov 27, 2014 #75

    Retroflyer_S

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    SABAK looks cool....is it a WIG craft too ? Or the very same craft ?
     
  16. Nov 27, 2014 #76

    Himat

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    I misspelled the name in my post, the pictured airplane is the SABAK M1 with technical information shown in the links provided by Henryk. From the pictures and technical information I would say it is a light airplane, no WIG vehicle. Why it was included in the book "Russia's Ekranoplans; The Caspian Sea monster and other WIG craft" I never understood. It could be that the builder pretended it was a WIG vehicle to circumvent regulations associated with airplanes. And if officially an ekranoplan, WIG vehicle, it have slipped into the book.
     
  17. Nov 27, 2014 #77

    henryk

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    "Позднее Баканов спроектировал еще несколько гидросамолетов, среди них САБАК-5 с арочным крылом и САБАК-6 с двумя турбовинтовыми двигателями ТВ7-117С мощностью по 2500 э.л.с."

    +"5" and "6"with 2 engines TW7...
     

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