This video explains where parasite drag force comes from, how it can be reduced, and what factors determine the strength of the parasite drag force acting on an airplane. An experiment is shown to demonstrate how taking steps to reduce the parasite drag force acting on a glider increases the distance it can fly.

Links:
Glider Build video:
   • How to Build a Cheap and Easy Model A...  
Basic Glider Physics video:
   • Introduction to Glider Flight Physics...  
Introduction to Model Airplane Design video:
   • How to Design Model Airplanes that Fl...  
Interference Drag Video:
   • Understanding Interference Drag | Sim...  

Timecodes
0:00 Intro
1:40 Atmospheric Pressure
2:10 Airflow and Streamlines
2:30 Pressure Drag (front)
3:12 Friction Drag
3:35 Pressure Drag (back)
4:13 Total Parisite Drag
4:37 Streamlining
6:05 Airfoils
6:32 The Drag Equation
8:55 Drag Coefficient Experiment
10:25 Conclusion