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aspect ratio

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  1. skwier

    ultralight design for high altitude runway (airfoil, aspect ratio, loading, dihedral)

    Beginning a design of an ultralight (US 103) to fly from a base near 5400 feet (1640 m). Yesterday we had gusts to 39 mph (63 kph) with airs temps to 85 F (30 C) in clear air and no clouds within 10 miles. Take off in those gusts would be foolish, but they came up very suddenly out of a blue...
  2. 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 ?
  3. Head in the clouds

    Aerodynamics help please. 1 - Aspect Ratio

    Structures I can do but aerodynamics is not my strong point so I would appreciate any help HBAers can offer. The project is what is represented by my avatar - almost - there are some fundamental differences which will reveal themselves as the design process firms up. Essentially the intention...
  4. W

    New member from Malaysia hope smeone here can HELP Me...

    hye all:gig: i am a final year student in mechanical engineering in Malaysia and taking minor in aircraft design now im doing my final year project about close range uav.i know the project is really simple but for me its something new need and to put more effort to complete this project...
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