Educational by Chapter of the Powered Paragliding Bible

I: First Flight

01 Training Process

02 Gearing Up

03 Handling the Wing

04 Prep For 1st Flight

05 The Flight

06 Flying With Wheels 

II: Spreading Wings

07 Weather Basics

08 The Law

09 Airspace   

10 Flying Anywhere

11 Controlled Airports

12 Setup & Mx

13 Flying Cross Country

14 Flying With Others

III: Mastery

15 Adv Ground Handling

16 Precision Flying

17 Challenging Sites

18 Advanced Maneuvers

19 Risk Management

20 Competition

21 Free Flight Transition

IV: Theory

22 Aerodynamics

23 Motor & Propeller

24 Weather & Wind

25 Roots: Our History

V: Choosing Gear

26 The Wing

27 The Motor Unit

28 Accessories

29 Home Building

VI: Getting the Most

30 Other Uses

31 Traveling With Gear

32 Photography

--- Not in book ---

33 Organizing Fly-Ins

34 Places To Fly

35 Preserving the Sport

36 Tandem

The Bump Scale

Section I First Flight, Chapter 5: The Flight

See also: Handling Turbulence/Collapses, and Active Flying

Crosswind launch  Nailing Every Landing  Analyzing the Forward Launch  Analyzing the Reverse Launch  The Bump Scale

The Bump Scale was developed so pilots could communicate what turbulence they're feeling or felt. When used properly, an experienced pilot's 5 will be a new pilot's 5. That is why it is tied to specific events such as tip collapses.

There are variations in wings, of course, and techniques to fly them. A highly skilled pilot will better keep the wing overhead and tracking straighter which reduces collapses. A pilot flying a higher performance wing or lightly loaded will be more likely to get small collapses than on a lower performance wing or heavily loaded.

These levels have been adopted by the PPG Bible, Powered Sport Flying Magazine and Powered Paraglider Radio.

Two important reference points are: 5 is small tip collapses on an average wing and 7 is a 50% collapse on that average wing with no input.
Value Description (reaction without active flying input)
0 Completely smooth.
1 Getting jostled, no noticeable change in flight path
2 Causes small changes in flight path. The most that new pilots should fly in.
3 Fairly bumpy. Causes body swings of around 3 feet with no control input.
4 Uncomfortably bumpy for most. Causes moderate changes in flight path and body movements of around 5 feet. Causes significant surging/retreating of the wing. May cause small tip collapses on lightly loaded or high performance wings.
5 Very active air. Causes small tip collapses even on beginner wings that are normally loaded.
6 Causes 50% collapses on lightly loaded or high performance wings.
7 Causes 50% collapses even on beginner wings that are normally loaded.
8-10 Increasing levels of dangerous air where 10 is completely uncontrollable regardless of skill level. Getting balled up in a dust devil would be a 10.

This dust devil reached over 1000 feet high. Flying in conditions strong enough to breed such beasts is really asking for it. It's the one you don't see that'll get you. 

© 2016 Jeff Goin & Tim Kaiser   Remember: If there's air there, it should be flown in!