Page:Aerial Flight - Volume 1 - Aerodynamics - Frederick Lanchester - 1906.djvu/463

 * to edge resistance, § 158; Langley on, § 232; supposed negligibility, Dines in agreement with Langley and Maxim, § 229; anomalous value of, §§ 182, 183; primâ facie evidence of, § 240; determination of coefficient of, § 240 et seq.; as deduced from loss of pressure in pneumatic transmission, § 247
 * Small angles, planes at, the laws for, § 159
 * Soaring, rationale of, energy derived from wind fluctuation, App. V.
 * Sound waves, momentum of, due to displacement of matter, App. II.; velocity of, calculated from communication of momentum, App. II.A.; negative momentum, App. II.A.; Larmor's theorem defective in respect of, App. II.B.; sound pressure experiments discussed, App. II.B.
 * Source and sink, definition, § 62; φ, ψ lines of, § 75; superposed on translation, § 76; system the equivalent of a solid, § 78
 * Speed of flight, of greatest range and least power, § 164; of birds computed from pressure, § 187
 * Sphere, stream lines, § 79
 * Stability of flow set up by impulse, § 60
 * Stability of aerodone, statement as to, § 239
 * Stokes' law, in the curve of resistance, confirmed by Allen, §§ 50, 51
 * Stokes, on discontinuous motion, § 99
 * Streamline body, Newtonian method not applicable, §§ 8, 9; resistance absent, Froude's demonstration, § 10; transference of energy by, § 11; imperfect form of, § 19; as interpreted by nature and art, fish forms, torpedo forms, § 24; conclusions as to, § 25; mutilations of the, truncated forms, §§ 26, 27; dictum of Froude, limitations of, § 27; definition of, § 23; streamline form not based on analytical theory, § 78; universal character of streamline motion, § 28; all bodies of streamline form in Eulerian fluid, §§ 23, 78, 79
 * Stream lines, definition of, as distinct from lines of flow, § 79; examples, plotted from hydrodynamic equation, §§ 79, 122
 * Streamline motion. See Streamline body.
 * Superposed planes, §§ 122, 154; thickness of layer acted upon by, §§ 160, 161
 * Superposed rotation, impossibility of, § 92
 * Superposition, of fundamental irrotational forms of motion, §§ 73, 74
 * Sweep, meaning of term, § 109, glossary; hypothesis of constant sweep, §§ 109, 160, 131
 * "Swish" of stick in motion, explanation of pitch note, § 106; "swish" or "whirring" of bird's wing an evidence of discontinuous motion in periptery, § 190


 * Tables, constants C and c, § 177; plausible values κ and ε, § 180 ; β and γ values, § 181; aerofoil pressures appropriate to least resistance, §§ 185, 186
 * Tension, fluid tension as hypothesis, § 82

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