Chapter 2 — Aerodynamics of Flight
Aerodynamic Terms — 2-1
Powered Parachute Wing Pressurization and Flexibility — 2-3
Forces in Flight — 2-4
Lift — 2-5
Drag — 2-6
Weight — 2-7
Thrust — 2-7
Center of Gravity — 2-8
Axes of Rotation — 2-9
Ground Effect — 2-9
Moments — 2-9
Thrust Line Moments — 2-10
Gravity Moment — 2-10
Wing Attachment to Cart — 2-10
Stability — 2-12
PPC Angle of Attack Characteristics — 2-12
Normal Flying Conditions — 2-12
Flaring Increases Angle of Attack — 2-13
Porpoising Creates Variations in AOA — 2-14
Stalls: Exceeding the Critical Angle of Attack — 2-14
Turning Effect — 2-15
Weight, Load and Speed Changes — 2-15
PPC Aerodynamics Summary — 2-16
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