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  1. H

    All moving ailerons flight report

    Interesting excerpt from a flight report by Harald Penrose "Stalled Behaviour with the original big controllers was outstanding, the machine sinking steeply but in almost level attitude under full lateral and longitudinal control and with no tendency to spin. Small preformance loss , large...
  2. H

    Hello

    I have been working on a design for a mountain UL for three years . First design did not meet my requirements , second met them but with no margin for weight growth , Third met requirements with margin but was ugly , even pretty weighs , latest is a completly new approch and is to early to comment .
  3. H

    Is there a gap in ARs ?

    I could be wrong but there seems to be a gap in AR between the ultralow AR planes 1-2 ( Arup , Wingless ) and the bottem of the conventional planes 4.5 ( Cusset special ). Does the gap exist ? What "mission " could the "very low " 2.5-4 AR planes forfill ?
  4. H

    boxed in sesquiplane twin - possible improved deflection of propeller slipstream

    I have been toying with the idea of a boxed in sesquiplane twin , with junkers flaps on both wings and spoilers on main wing outer panels . I hope to gain improved low speed roll controll , lighter spar on main wing , and possibly less penelty from having the wings close togther (half cord...
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