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Fatigue ......................................................................1-13
Hypothermia ............................................................1-13
Medical Summary ....................................................1-14
Chapter Summary ........................................................1-14
Chapter 2
Aerodynamics ......................................................2-1
Introduction ....................................................................2-1
Aerodynamic Terms ...................................................2-1
WSC Wing Flexibility ...................................................2-6
Forces in Flight ..............................................................2-7
Dynamic Pressure (q) .................................................2-7
Lift ..............................................................................2-7
Drag ............................................................................2-8
Thrust .......................................................................2-10
Ground Effect ...........................................................2-11
Center of Gravity (CG) ............................................2-11
Axes of Rotation ..........................................................2-12
Lateral Axis—Pitch ..................................................2-12
Longitudinal Axis—Roll ..........................................2-13
Vertical Axis—Yaw .................................................2-13
Stability and Moments ................................................2-13
WSC Unique Airfoil and Wing Design ....................2-13
Trim—Normal Stabilized Flight .............................2-13
High Angles of Attack ..............................................2-13
Low Angles of Attack ..............................................2-14
Pitch Pressures ..........................................................2-14
Roll Stability and Moments ......................................2-16
Yaw Stability and Moments .....................................2-17
Thrust Moments .......................................................2-18
Stalls: Exceeding the Critical AOA .............................2-18
Whip Stall–Tuck–Tumble ........................................2-19
Weight, Load, and Speed ............................................2-20
Basic Propeller Principles ............................................2-20
Chapter Summary ........................................................2-20
Chapter 3
Components and Systems .................................3-1
Introduction ....................................................................3-1
Wing ..............................................................................3-2
Wing Frame Components ..........................................3-2
Keel ........................................................................3-3
Crossbar .................................................................3-4
Control Frame .........................................................3-4
King Post With Wires-on-Top Wing Design ..........3-5
Topless Wings With Struts ....................................3-5
Battens and Leading Edge Stiffener ......................3-7
Sail Material and Panels ........................................3-7
Pockets and Hardware ...........................................3-7
Sail Attachment to Wing Frame ............................3-7
Cables and Hardware ....................................................3-7
Wing Systems .............................................................3-8
Refl ex Systems .......................................................3-8
Table of Contents
viii
Roll Control System ..............................................3-9
Trim Systems ..............................................................3-9
Ground Adjustable Trim Systems .........................3-9
Infl ight Adjustable Trim Systems ........................3-10
Structure ...................................................................3-11
Landing Gear ...........................................................3-11
Landing Gear for Water and Snow .......................3-14
Electrical Systems ....................................................3-15
Ballistic Parachute ...................................................3-15
Flight Deck ...................................................................3-16
Dashboards and Instrument Panels .........................3-16
Flight Instruments ................................................3-17
Navigation Instruments ........................................3-17
Engine Instruments ..............................................3-17
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Weight-Shift Control Aircraft Flying Handbook(2)
