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Type: Posts; User: David Lewis

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    It was not understood that flexing wings were...

    It was not understood that flexing wings were perfectly alright until the DC-3 came out. The skin thickness was less than anything that had been tried before, and Douglas staff, including the...
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    The foam is just to help mold the skin to the...

    The foam is just to help mold the skin to the right shape. It does not carry any structural load except to resist oil canning and local buckling, which are all small forces.
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    Thank you to all members who have offered...

    Thank you to all members who have offered valuable advice and suggestions. I have incorporated all the ideas into the revised design.
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    That's true, Frank, this is a maximum fun sport...

    That's true, Frank, this is a maximum fun sport airplane. I went with a helicopter style canopy design. The cabin is roomy, which would make it too slow to serve as practical transportation. It's a...
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    Thanks Jeff, Ron and Bill for valuable advice and...

    Thanks Jeff, Ron and Bill for valuable advice and suggestions. I never understood the advantage of canards over ordinary (tail-in-the-back) configurations. Can you enlighten me?
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    The dashed line on the wing depicts the mean...

    The dashed line on the wing depicts the mean aerodynamic chord. My intention is to have the CG a short distance ahead of the center of lift, and increase horizontal tail volume and electronic...
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    That's correct. They possess inherent stability....

    That's correct. They possess inherent stability. If you turn off the artificial stability, unlike a quadcopter, they will keep on flying (albeit requiring more pilot skill and attention).

    The most...
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    I assume the airfoil would have to be reflexed on...

    I assume the airfoil would have to be reflexed on these model wings to decrease center of pressure travel but have not examined it up close. One disadvantage of a conventional flying wing is that up...
  9. Taking up private flying while you are in debt is...

    Taking up private flying while you are in debt is a bad plan. Borrowing money to by an airplane is insane. After you are out of debt and have an emergency fund, then you can look at your budget and...
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    I appreciate your excellent input, Bill and...

    I appreciate your excellent input, Bill and Birdman! All important points. Two features that make an airplane suitable for low time pilots is plenty of stability, and low stalling speed. Two problems...
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    Thank you for pointing that out, Bill. The wing...

    Thank you for pointing that out, Bill. The wing would need to be stiff in torsion.
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    A flying wing pusher airplane design

    Hello all, This is a two-place airplane I've designed. It will use a 3-axis artificial stabilization system. The wing airfoil is not reflexed. The horizontal stabilizer provides the down force to...
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