# Tag Info

### How the displacement of the MRD piston is calculated in this Above knee prosthetic?

Let us annotate the vertical line segment going down from joint B towards $\theta \$, BV. V being the bottom end. Angle BDE is the sum of the two angles, $\angle BDE=\angle(EBV +VBD)$ Let us call ...
• 22.6k
1 vote

### How to calculate the centrifugal impulse in the y direction?

You have calculated the integral right but the selected integral is totally wrong. You should calculate the time integral of the vertical force component, the variable shouldn't be the angle. Of ...

### Engineering Dynamics Problem: Torque Comparison for Single Rod in Upward vs Downward Swing

It makes perfect sense. when we remove the acceleration, we are left with only torque caused by $\tau= mgr*cos\theta$ For simplicity, I assume the rod's mass is concentrated at the end; it wouldn't ...
• 22.6k

### How Do Length of Pylon and Rotor Disk Radius Impact Angular Frequency and Torsional Stiffness in Whirl Flutter Analysis for a 2 DOF Propeller System?

It is too complex to be answered here. But very roughly, just an intuitive qualitative estimate here. The longer the pilon (same cross section), the greater the period of vibration of the assembly, ...
• 22.6k