Alex Strojnik inspects Mike Arnold's AR-5

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Mike Arnold preps the AR-5 for the record - Here we go again - 4:50 AM!
Video link
https://youtu.be/t-Kc7ki3wPo

 

[cblink.007]

These videos are pure gold. Enough said!

 

[Lendo]

I didn't know what it was until I got Jan's program and researched it on the Internet and came across a reference explaining it. I found that interesting, now if I could understand what Min CR means in Jan's program, I might find that interesting as well.
Any suggestions?
George

 

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Mike Arnold visits Dennis Sanders
my assignment that day was to just get shots and take "home movies" - in retrospect, I wish I would have followed all the conversations to completion -

 

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part 2 has a lot more hardware;

 

[davidjgall]

....now if I could understand what Min CR means in Jan's program, I might find that interesting as well.
Any suggestions?
George

That's Camber Ratio, George; the height of the maximum point on the camber line with respect to the chord line, expressed as a percentage of the length of the chord line. The Min CR refers to how nearly "uncambered" or how "nearly symmetrical" of an airfoil can be used at the given point of interest on the propeller blade, or for the entire blade, as the case may be.