Parachute Sizing When sizing a parachute, static equilibrium is assumed. That is, under nominal conditions, the parachute does not accelerate nor decelerate, but maintains a constant descent speed. In truth, this is hardly the case. However, in terms of parachute sizing, this assumption serves us well since average descent speed is our target. The static…

This Excel-based gear design tool provides a quick and reliable way to calculate critical parameters such as stress numbers, allowable stress limits, geometric factors, and design factors essential for mechanical gear analysis. Users simply need to input application-specific conditions — including operating power, running RPM, number of pinion teeth, diametrical pitch, and material specifications —…