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No certificate needed and "satisfactory evidence" is only needed "upon request". From the FARs: 103.1 Applicability. This part prescribes rules governing the operation of ultralight vehicles in the United States. For the purposes of this part, an ultralight vehicle is a vehicle that: (a) Is used or intended to be used for manned operation in ...


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In general, regardless of the characteristics of your aircraft, 3 HP isn't enough power to lift the weight of the pilot safely. Your ultralight would be effectively a power-assisted glider, unable to climb in calm air. You'd have to launch like a hang glider (from a slope or cliff, or by one or another form of tow), though if your wing and layout are ...


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It depends on the lift-to-drag ratio, and the lift versus airspeed characteristic of your wing. If you know the total weight of the plane with you in it, then you know how fast you need to fly to generate an amount of lift sufficient to exceed the dead weight of the plane- in the absence of drag. Then knowing the L/D ratio, you can solve for the drag force ...


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You can not fly an ultralight there without prior authorization if I am reading 103.17 correctly. The way that I am reading this, it seems that you may not be in controlled airspace around an airport without prior authorization, period. And, above 18000 is a no-go as well. The highest concentration of aircraft traffic is at airports, Navaids like VORs, ...


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Whether or not it's legit or not for an ultralight (which may or may not be ADS-B Out equipped) to be overflying that airspace without talking to ATC, if you take into account that IFR approaches start from 9500 feet and could be as low as 7500 feet with a missed approach starting with climb to 9500 feet in the airport vicinity, and some planes can do that ...


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The rated power of an electric motor can vary wildly; it's not a fixed quantity like an IC engine. If you fit a larger prop, or run it at a higher voltage, it will draw (and hopefully produce) more power. However it'll also produce more waste heat, and may well be less efficient. You can run it way beyond the rated power for a few seconds, or overheat a ...


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FLÜGEL World Directory Of Light Aviation 2019/2020 - English PDF could be a good starting point. On pages 278 - 281, a total of 71 lines of electric motors from 42 manufacturers are featured. Disclaimer 1: some data fields are incomplete for many of the entries. There are German, English French and Chinese versions in paper and pdf, starting at €8. Here's ...


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I implemented a program using Matlab for S.C calculus purposes (I'm actually involved in an aircraft project and, fortunately (or not), I'm the structures guy. I have based the code and the theory in a PDF bibliography that is linked w/ the .zip folder. You'll notice two matlab codes: -One is named "Load_Airfoil_Coordinates_using_MATLAB.m". It loads any ....


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