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  1. J

    NACA Duct help

    I am just getting started on some minor repairs to my recently purchased II LTS. The canopy skirt has NACA openings, however the vents are long gone, do any of you all have some recommendations on replacements?
  2. PiperCruisin

    NACA 6-series cusp

    I imagine this subject has been somewhat hashed out on the forum from what I've seen, but here it goes. I've been looking into some airfoils for a design, but starting to confuse myself (not an aero guy). I have Riblett's book and was comparing his airfoil to the 6-series using Javafoil...
  3. A

    XFLR 5 Help needed

    Hi guys!!! I am new to this forum and by reading the threads I realized there are alot of things i didn't know about aero-modeling. Thanks to you guys for all the superb posts :) Here is my query. I am designing a low weight RC plan to carry a specific sized payloads. Weight and battery being...
  4. M

    Help with wing building part 103

    Hello all, new member here from Tucson. I'm in the drafting phase of building a part 103 UL from scratch and I've come to a snag. I've been learning the science behind airfoil shapes and have picked my airfoil(naca 4418). I did all the math from Chris Heintz's article...
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