Reynolds Number Explained

This video explains what the Reynolds Number is, how to calculate it, and how it affects the flight performance of gliders. An experiment is shown to demonstrate how changing the Reynolds number of a glider affects the distance it flies.

Links:
Glider build video:
   • How to Build a Cheap and Easy Model A...  
Air density and viscosity (by temperature):
https://www.engineeringtoolbox.com/ai...
Air density and viscosity (by altitude): https://www.engineeringtoolbox.com/st...

Timecodes
0:00 - Intro
1:11 - What the Reynolds number is
2:03 - How to calculate the Reynolds number
3:20 - Effects of the Reynolds number on the parasite drag coefficient
4:10 - Reynolds number demonstration
5:52 - Conclusion