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  1. skwier

    Metal thickness for gussets on ultralight aluminum-frame tail?

    What is a good thickness for gussets on a tail made with aluminum tubes (say 5/8 to 1 inch tubes)? The Legal Eagle uses 0.030 inch in 6061 T6; other gussets I see are more.
  2. skwier

    Spacing for rivets in tail? (aluminum)

    What is a good spacing for rivets in gussets on a tail made with aluminum tubes (say 5/8 to 1 inch tubes)? Belite says they use 'commercial' rivets not aviation rivets. What is the difference?
  3. skwier

    Demoiselle (1909) "replicas"

    For those of you who like early airplanes or ultralights you may be interested in this new report about modern replicas of the Demoiselle ("Damselfly") No. 20, designed and flown by Alberto Santos-Dumont in 1909...
  4. skwier

    Painting exposed aluminum tubes on an ultralight - which paint?

    Purely for appearance I am thinking of painting exposed aluminum tubes on a ultralight a pale golden yellow. To save weight I suppose spraying would be best. What paint would be best? Will any paint stick to exterior aluminum for long? Do the "paint plus primer in one coat" products add any...
  5. skwier

    Weight of finished wing fabric

    For weight calculations, what is the weight per area of finished Ceconite or dacron as used on wings and tails?
  6. skwier

    Technical History of the 1909 Demoiselle

    There is continuing interest in building light aircraft inspired by the Demoiselle of 1909. Much of the available information about the original Demoiselle is incomplete, garbled, or incorrect. I prepared a report with the best information I could find. It is at...
  7. skwier

    Updated Demoiselle design idea, the Damselfly

    Here is a preliminary design, the 'Damselfly,' for an ultralight (US 103) updating the Santos-Dumont 'Demoiselle' of 1909. http://www.westernexplorers.us/Damselfly_Copyright_2016_Stuart_K_Wier_Sheet_1_10Aug.png (I am still using an image file name from 2016 but the design is evolving.)...
  8. 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...
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