Modern day "motorcycle of the air" aircraft class?

Discussion in 'Aircraft Design / Aerodynamics / New Technology' started by cluttonfred, Oct 3, 2015.

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  1. Jan 27, 2019 #2101

    erkki67

    erkki67

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    The Rebell is for sure a hotrod I dlike to call my own, but the price tag doesn’t allow me to do so.

    Another point is, it’s not sit on top, and the designer is not willing to build a one of a kind fuselage.
     
  2. Jan 27, 2019 #2102

    jedi

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    Looks like a good candidate for a plans built or kit. Likely would have material source issues in the US requiring a redesign. And then there is the issue of making it FAR 103 legal. Oh well another great idea shot to he!!.
     
  3. Jan 29, 2019 #2103

    choppergirl

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    Last edited: Jan 29, 2019
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  4. Mar 11, 2019 #2104

    Sockmonkey

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    Even simpler version of the flea broomstick.
    [​IMG]
    Still two-axis, but using a Spratt wing setup instead of a moving rudder.
    Fixed rudder plates on the rear wing tips give directional stability. They're also outside the pilot and prop tubulence, which is nice.
    The flea's moving fore wing is already most of the way to being a spratt wing parts-wise. The wing just has to be made in left and right halves.
    This way we have no control runs through the fuselage at all. Just a pair of pushrods coming off the stick straight to the wing. No moving bits aft of the pilot. The rear wing can easily be taken off in one piece, and the fore wing can be folded back just by unhooking the struts. Fuselage is still a single tube. Windshield is mounted on the center A-frame that supports the wing root.
    I think we're at the limit of what we can shave off and still have a decent plane.
     
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  5. Mar 12, 2019 #2105

    Aesquire

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    Major drag penalty for the gap in the wing. Four tip vortices. Then there's the rear wing.

    Ailerons and a solid center section would work better. Wing fold would be similar, but you would have gap covers to apply.

    Otherwise, neat!

    I'll let others argue rudder configuration.
     
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  6. Mar 12, 2019 #2106

    Sockmonkey

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    Noted. I'll eliminate the gap, but I think the spratt wing would have fewer parts than separate ailerons/flaperons.
     
  7. Mar 14, 2019 #2107

    Sockmonkey

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    And fixed.
    [​IMG]
    I'm not fussed about the shape of the rudders. They can be whatever shape works and is easy to do as they're non-moving.
    So, how else can we simplify?
     
  8. Mar 15, 2019 #2108

    Victor Bravo

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    You could find a way to remove the interference between the base of the strut and the pilot's leg...
     
  9. Mar 15, 2019 #2109

    Sockmonkey

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    The pilot's feet don't reach that far, and the nose faring is wide enough that his feet would be behind it.
    Here you can see the pilot in relation to everything else in upright and reclined position.
    [​IMG]
     
    Last edited: Mar 15, 2019
  10. Mar 15, 2019 #2110

    delta

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    So happens I was working on one this morning... Just thinking inside a 18' box.
     

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  11. Mar 16, 2019 #2111

    Sockmonkey

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    Added a human figure and adjust the form a bit.
    [​IMG]
     
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  12. Mar 16, 2019 #2112

    Victor Bravo

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    Dude that's way too huuuge of an airplane. You need about 60-65 % of that.
     
  13. Mar 16, 2019 #2113

    Sockmonkey

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    It's smaller than it looks. The span of the fore wing is only six meters, four for the aft wing. It's the broad chord (1.5 meters) that makes it look big.
     
  14. Mar 16, 2019 #2114

    erkki67

    erkki67

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    The Piojo had the perfect size.

    984D1B50-D011-4B9E-96B4-FDBF5C3C0B98.jpeg

    So, Sockmonkey your drawn pilot must be a small child then.
     
  15. Mar 16, 2019 #2115

    erkki67

    erkki67

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    5836A150-B3B7-42EC-B9E7-F99486518C0B.jpeg

    Next thought would be the Payen wing of Fritz, with the engine where it is at this red bird without the t tail, and the pilot pod

    Like on his yellow Ranger derivative:

    1D0961DA-1528-4975-A37D-4EF01363C16B.jpeg

    The whole bird built with a 3 section wing, folding down ears, otherwise cantilever type and a straight axle for the landing gear, like the Skypup or the Mignet HM14 flying Flea.

    The over all wing span could be somewhere between 12 and 15’

    With the engine installed at the wing leading edge, a big prop could be used.
     
  16. Mar 16, 2019 #2116

    Sockmonkey

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    Is a six meter span too much?
     
  17. Mar 16, 2019 #2117

    Victor Bravo

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    It may be a little much for this mission and not enough for a different mission. How big is your aircraft ocmpared to the Pouchel? That's about the size and area I was guessing, perhaps built a little more robustly and perhaps not quite capable of Part 103 weight and stall speed.
     
  18. Mar 16, 2019 #2118

    Sockmonkey

    Sockmonkey

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    As shown it's wingspan is six meters and the overall length is just under five meters.
    I was going for about the same size/weight/stall speed, only with fewer moving parts.
     
    Last edited: Mar 17, 2019
  19. Mar 17, 2019 #2119

    erkki67

    erkki67

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    No, 6m is just fine, but a real size pilot between 1,8 to 2,0m wood ne fine.

    The drawn one looks more like 1,5m
     
  20. Mar 18, 2019 #2120

    Sockmonkey

    Sockmonkey

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    Was one of the stock models. So, what do you think of the spratt wing and fixed rudders?
     

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