G-forces on RC helis.

[bolders]

There was a video of Matt Botos a year or so back flying the Synergy E9 (N9 conversion) with a screen overlay showing G forces. I'm sure it was peaking at over 20G's. I'll find it tonight of someone else doesn't beat me to it

What you mean like the one in post 7 above :P

[jamiem]

Lol, I'm on my phone with no YouTube access, so excuse that one then

[oneandonlyian]

It was the edge blade testing video and it made me feel quite sick. Haha.

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[cjcj1949]

Yes the v**2/r is the acceleration needed to fly in a circle. It applies to a point mass travelling at constant speed around a circle of radius r. It is also r x (anguler velocity squared) if that is more useful. Anguler velocity is in radians/sec. If you want to convert to rpm a radian is about 60 degrees. So anguler velocity is about 6 times the frequency of going round every second. Or omega = 2 pi f. To get real acceleration, exactly, you need some fairly complex maths, and you need to define exactly what you want.

To work everything out in mechanics, including getting to the moon all you need is Newton's second law.

Force = Mass X Acceleration which can be rewitten as

Force = The rate of change of momentum.

Everything else just follows ( not necessarily easily)