Glide Ratio | Polars | Effects of Wind | Effects of Lift/Sink | Effects of Wing Loading

About the course

Prerequisites: Glider Familiarization, Aerodynamics

Approximate time to complete: 2 hours 15 minutes

Soaring is all about performance. When you are flying an aircraft without an engine, efficiency counts! In this course, you will learn about the factors that affect your glider's performance so that you will be better equipped to get the most out of each flight.


Please Note:

This course is designed for use by a single individual. It is against the Terms of Use to share this course, in part or whole, with other users, or to teach others using the content from this course. The time and effort that goes into the development of these courses is immense. To ensure that we will be able to offer more courses, we need to collect a fee from every student who takes a course. Thank you for supporting our effort!


Course Overview

  • Welcome FREE PREVIEW

Glide Ratio

  • Section Overview
  • Video
  • Quiz 1 & Instructions

Glider Polars

  • Section Overview
  • Video
  • Quiz 2 & Instructions

Effects of Wind

  • Section Overview
  • Video
  • Quiz 3 & Instructions

Effects of Lift/Sink

  • Section Overview
  • Video
  • Quiz 4 & Instructions

Effects of Wing Loading

  • Section Overview
  • Video
  • Quiz 5 & Instructions

Final Test

  • Final Test & Instructions

About Your Instructor

Russell Holtz

Russell Holtz

Russell is the author of two well-respected and widely-used soaring flight training books in the United States - the Glider Pilot's Handbook of Aeronautical Knowledge and the Flight Training Manual for Glider Pilots.

Russell grew up in Tulsa, Oklahoma, and attended the Massachusetts Institute of Technology, where he earned a Bachelor of Science degree in Aeronautical and Astronautical Engineering.

He obtained his Private Pilot Certificate in gliders in 1995, in airplanes in 1996, his Commercial Certificate in Gliders in 1998, and his Certified Flight Instructor rating in gliders in 1999. He completed the FAI Silver Badge requirements in 1997, and the Gold and Diamond requirements in 1998. Russell has given over 2,800 hours of primary, cross-country, contest, and aerobatic flight instruction, and has over 4,000 hours total time in gliders.

Russell's passion for understanding and communicating soaring knowledge is evident in his teaching.


$30.00 Regular Price Buy $30.00



From Kent Sapp

Very challenging and informative