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  1. J.L. Frusha

    Curtiss-Stinson Special

    Thank you! Some of it gets really confusing, especially when they shift the formula multiple times in the same line. @WonderousMountain
  2. J.L. Frusha

    Curtiss-Stinson Special

    Some of what I've been looking at. "closed wing" and "boxed wing" configurations also includes using plexiglass at the struts to form the aerodynamic closed wing configuration. Plus, included one that includes Augmented Munk’s Minimum Induced Drag Theorem.
  3. J.L. Frusha

    Curtiss-Stinson Special

    Munk and others wrestled with this and tried to formulate better ways to calculate for multiplanes. It's more complex than my attempt, but I tried.
  4. J.L. Frusha

    Curtiss-Stinson Special

    Cockpit opening, itself is about 16in wide inside and 21in fore/aft in the drawing, with about 50% clear straight up. Somewhat tight, yes, but, it's a drawing and subjext to change as the real world intrudes. BOTH the prop arc and the wing guards are higher than the centerline of the landing...
  5. J.L. Frusha

    Curtiss-Stinson Special

    I am planning for a PSRU to rev the V2 into its power band, potentially emulating the original V8 sound, with the prop at low speeds.
  6. J.L. Frusha

    Curtiss-Stinson Special

    Simple for many... College Algebra was as far as I went. Even that has been unused for decades. There are other issues, which I'm not willing to be publicly ridiculed for, as well.
  7. J.L. Frusha

    Curtiss-Stinson Special

    Corrected for airfoil...
  8. J.L. Frusha

    Curtiss-Stinson Special

    Not absolutely certain how to put all the numbers together on that worksheet. Kind of frustrating on an HP Chromebook...
  9. J.L. Frusha

    Curtiss-Stinson Special

    Oops... Penn. State... Testing airfoils for low speed operation in the low-turbulence wind tunnel. Yes, I snagged the wrong one... PSU 94-097
  10. J.L. Frusha

    Concepts only: Doodles without numbers

    Y'all know I'm a fan of splice-life... Inverted wings from WR-1 on a Gee Bee R3 (fantasy design). (NOT done in Photoshop. Not my skillset)...
  11. J.L. Frusha

    Curtiss-Stinson Special

    Unless I snagged the wrong image (entirely possible), that's the airfoil tested and a set of wings built on a full-sized biplane at MIT. Said plane is RC.
  12. J.L. Frusha

    Curtiss-Stinson Special

    Props are designed to push air. On a low speed, low powered ultralight airplane a high efficiency prop will be essential to every aspect of flight. Sure, I may be wrong, but... What if I'm right? Same goes for the airfoil. Could I pick a different one? Sure. If sticking to the original...
  13. J.L. Frusha

    Curtiss-Stinson Special

    Sounds like a case for rib stitching... One more skill I will develop.
  14. J.L. Frusha

    Curtiss-Stinson Special

    Updated with some info. Will be using the Curtiss design with Meteorplane construction. Yes, that's a real prop blade design swiped from ultra high altitude, extreme loiter UAVs. Yes, the airfoil is double-sided and over twice as thick as pre WWI designs. More lift! 40k-80k not millions.
  15. J.L. Frusha

    How many V-Twins flying?

    Planning one, but still so much vaporware, until I can start the build.
  16. J.L. Frusha

    Curtiss-Stinson Special

    Many thanks to Tim E./ @Tiger Tim for the Meteorplane blueprint scans and additional information. As an original Ultralight of similar biplane configuration from the time period, I believe the basics can be designed and built around those plans, rather than just the Woodhopper and Gypsy plans...
  17. J.L. Frusha

    Curtiss-Stinson Special

    Considering the purpose of the aircraft and the vast amount of qualification and experience Ms. Stinson had, the longer wings are just as valid a choice as the lower, though I was unaware of the modified lower wings with ailerons. These last few pages of conversation and additional research has...
  18. J.L. Frusha

    Curtiss-Stinson Special

    They haven't answered in several years, either phone, or email. I have given up on asking the museum anything.
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