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dave's Cheese Head SLC

11/22/2017

1 Comment

 
I am going to build a few foamies this winter for speed limit and general screwing around.  They will be about 52 inches in span with a 12 inch root and 8 inch tip chord. 
The airfoil is a NACA0015-92,  The -92 moves the high point forward from 30 to 20% and blunts the leading edge. 
It will have  a tapered spars top and bottom.  The spar notch it too large on the pictures.  I will cut the foam on my home brew weight fall foam cutter.   

At least one will have a hard tank and all will allow mufflers when practice flying.
It will be a lot like the Yankee nipper except a little leading edge sweep helps in a crash and I think the boom needs to be a little longer. 

Power will be one of my OS  SFR 25's wiht metal motor mounts. 
Picture
templates all ready for final polishing and wing cutting
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Spar stock, some old growth douglass fir.  cut offs from another project.  beautiful grain
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Not much progress, the templates did not product good cores.  I need to rethink the lead in angles when using a feather cut system.  While the feather cus system is really cool, many things have to be perfect to wok out. 

The scrap however has been turned into some more 1/2A airplanes.  The cuts were made with a single template and a fixed pivot.  I get very good results wiht that method.   

1 Comment
Bob Furr
11/22/2017 10:34:20 am

From experience I would go with a tip airfoil that is a little thicker to avoid tip stalls in high circle turns. I have had similar wings come spinning down after a tip stall directly overhead.

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  • home
  • About Circle Masters
    • World Wide visitors
    • Club Contest
    • About the Club
    • Event Calendar
    • Club Events >
      • Building contest 2019 >
        • Building Contest 2017
      • MECA
      • Library Static show and open house 2014
      • Steam Show
      • Town Of Lisbon Fun Fly
      • Kidventure
    • Awards
    • Club Meetings
    • Membership and Contact information
    • Flying Location >
      • Dan Tetzlaff Flying field Dedication
  • Newsletters
    • 2021 Club Newsletter
    • 2020 Club Newsletter
    • 2019 Club Newsletter
    • 2018 Club Newsletter
    • 2017 Club Newsletter
    • 2016 Club Newsletter
    • 2015 Club Newsletter
    • 2014 Newsletters
    • 2012- 2013 Newsletter
    • 2011 Newsletter
    • 2010 Newsletter
  • About control line
    • Wikipedia Page on control Line
    • Control line overview
    • Getting Started
    • Control line Tutorials From Brodak
  • Pictures/ Videos
  • Videos
  • privacy_policy
  • Dave's blog
  • Plans page
  • Administration
  • Chris's blog
  • meetings