Lucifer304 @ 11.12.2010, 00:15
I'm sorry, the question may nemngo not the topic but is it possible to calculate the speed of the program vozduzhnogo screws on the motor, and is it possible to create a program specifically for this, ala tachometer?
Directly - not likely. The frequency of sound, air from the dissected blades will depend not only on the axis of rotation speed but also on the number of blades. So, directly unlikely. Although, if you select the beats and their relationship in the theory can come up with a formula for this calculation. Well, that before the creation of the program, in theory it is possible, but only up to a certain frequency. In particular, using a smart camera to do a fairly accurate estimate for the angular velocity to 25 \ s .. Especially if you use the light or reflector mayachek on one of the blades. But then again, who will bother this development? :)