![drag - At what rpm does the tip of a 54" propeller start to incur mach losses? - Aviation Stack Exchange drag - At what rpm does the tip of a 54" propeller start to incur mach losses? - Aviation Stack Exchange](https://i.stack.imgur.com/X5kY8.jpg)
drag - At what rpm does the tip of a 54" propeller start to incur mach losses? - Aviation Stack Exchange
![Theoretical and computational investigations of the optimal tip-speed ratio of horizontal-axis wind turbines - ScienceDirect Theoretical and computational investigations of the optimal tip-speed ratio of horizontal-axis wind turbines - ScienceDirect](https://ars.els-cdn.com/content/image/1-s2.0-S2215098618301381-gr1.jpg)
Theoretical and computational investigations of the optimal tip-speed ratio of horizontal-axis wind turbines - ScienceDirect
Does the centre of a wind turbine spin at the same speed as the blade tips? They must, but the centre covers less distance. How is this possible? - Quora
![Power conversion efficiency vs. tip-speed ratio for various numbers of... | Download Scientific Diagram Power conversion efficiency vs. tip-speed ratio for various numbers of... | Download Scientific Diagram](https://www.researchgate.net/publication/320072217/figure/fig5/AS:667934330482700@1536259362633/Power-conversion-efficiency-vs-tip-speed-ratio-for-various-numbers-of-turbine-blades.png)