| Foreword |
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vii | |
| Section A: The Sailplane In Still Air |
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1 | (32) |
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Units, and Some Basic Ideas |
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3 | (8) |
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Units, dimensionless coefficients, Reynolds number, Mach number. |
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True and equivalent speeds. |
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Boundary layers: laminar and turbulent. |
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Properties of two-dimensional wing sections. |
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11 | (6) |
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Wings of finite span: downwash and induced drag. |
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Effects of span loading and aspect ratio, taper and twist. |
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Non-planer lifting systems. |
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Three dimensional lift curve slope. |
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Drag of three dimensional wings. |
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17 | (6) |
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The total drag of a sailpalane. |
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Simple case of a parabolic drag polar: minimum drag and minimum power. |
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Actual polars: effects of reynolds number, ballast and altitude. |
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23 | (10) |
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General equations of motion for flight in a vertical plane. |
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Results for a parabolic polar. |
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The dimensionless performance curve. |
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Best speeds for motor sailplanes. |
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Performance in turning flight. |
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Best gliding angle and minimum sink. |
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Effect of ballast and flaps. |
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Performance in turning flight. |
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| Section B: Instruments for soaring flight |
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33 | (18) |
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Instruments for Soaring Flight |
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35 | (11) |
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The measurement of vertical velocity. |
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The concept of Total Energy. |
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Methods of compensating variometers: venturis, the Irving tube. |
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Air mass-movement indicators. |
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46 | (5) |
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The altimeter and its calibration. |
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The airspeed indicator: pitot and static sources, pressure errors and their effect on limitations and best speeds to fly; calibration; other errors. |
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Reduction of neverexceed speed with height to avoid flutter. |
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| Section C: The sailplane in the atmosphere |
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51 | (73) |
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The Sailplane in the Atmosphere |
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53 | (12) |
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Thermals: observations in the laboratory and in the atmosphere. |
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Mathematical descriptions: power laws: spherical bubbles: general remarks. |
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Flying in Thermals: the Classical Analysis |
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65 | (10) |
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Best speeds to fly and the effect of down-draughts. |
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The BGA handicapping system. |
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Some Ideas on the Practice of Cross-Country Flying |
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75 | (8) |
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The practice of cross-country flying. |
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The MacCready ring and its calibration. |
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Practical considerations and techniques. |
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More Advanced Ideas on Cross-Country Flying |
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83 | (8) |
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More advanced ideas on cross-country flying. |
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Flight when the load factor is not unity. |
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Computer calculations of sailplane performance. |
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Use of water ballast and the effect of flying at the non-optimum weight. |
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91 | (10) |
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Generalised optimisation calculations: the Calculus of Variations. |
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Flight under a cloud street. |
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101 | (10) |
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Flight between fixed points in a cross-wind. |
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Triangular flights in the presence of a wind. |
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The final glide: height to leave the last thermal. |
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The Effect of Centre of Gravity Position |
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111 | (5) |
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Effect of CG position on performance. |
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Loss of energy height at low and high speeds: overall loss of energy height. |
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A Brief Note on Computers, Flight Data Recorders, GPS, etc |
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116 | (8) |
| Appendices |
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I. Some Useful General References |
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118 | (3) |
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121 | (1) |
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III. The Standard Atmosphere |
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122 | (2) |
| Symbols |
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124 | (5) |
| Index |
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129 | (4) |
List of Authors Quoted at the End of Each
Chapter |
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133 | |
Lisainfo e-raamatute kohta