Page:Aerial Flight - Volume 1 - Aerodynamics - Frederick Lanchester - 1906.djvu/461

 * Newtonian method, application to normal plane, §§ 4, 136; deficiency of the, § 5; application by Rankine and Froude to theory of propulsion, §§ 8, 198; results in the sine-squared law, § 145; sine-squared law plotted, § 147; Newtonian law subjected to experimental investigation, § 222. See also Momentum.
 * Newtonian theory modified, the hypothesis of constant sweep, §§ 160, 161, 172, et seq.
 * Normal plane, stream lines and lines of flow, for inviscid fluid, § 79; theory and data of the, § 130 et seq.; law of pressure, § 130; pressure due to wind on, § 131; still air pressure determination, § 132; quantitative data, §§ 133, 134; in fluids other than air, § 135; theory summarised, § 136; theory and experiment compared, §§ 136, 137; influence of shape of plane, § 139; in the light of efflux theory, § 140; effect of projecting lip, §§ 140, 141; planes of varying proportions, pressure on, § 142; influence of perforations, § 143


 * Orbital motion, of fluid particles, §§ 16, 17; Rankine's curve, § 18
 * Osborne Reynolds, on turbulence, § 37


 * Parachutist, weight borne by earth's surface, § 6
 * Peripteral area, meaning of, § 210; expression for, § 210; in relation to the soaring mode of Hight, App. V.
 * Peripteral zone. See Peripteral area.
 * Peripteral motion, §§ 126, 127; alternative theories relating to, § 190
 * Peripteral system, considered as wave motion, § 116
 * Peripteroid motion, types of, § 122; plotting of the field of flow, § 122; energy in the periptery, § 123; modified systems of, § 124; in a simply connected region, § 125
 * Periptery, the, f. n. § 107; motion in the, § 107 et seq.
 * Phillips, H. F., on arched section of aerofoil, § 108; superposed supporting members, § 154
 * Plan-form of aerofoil, aspect ratio, § 119; a standard of form, § 192
 * Plausible values, employment of, §§ 177, 178
 * Power, conditions of least h.p., § 164; expended in flight, §§ 219, 220
 * Poynting, momentum of sound waves, App. II. B. and II. D.
 * Pressure, as related to density, 58; lines of equal, §§ 60, 113; distribution in a field of How, § 82; system compounded of accelerative system and steady motion system, § 88; on normal plane, §§ 130, 138; on pterygoid aerofoil, best value of, § 185; on aeroplane, best value of, 186; tables of best values, §§ 185, 186; actual examples, § 187
 * Propulsion, theory of, § 197 et seq.; in relation to body propelled, § 199; hypothetical study in, negative slip, § 200; Newtonian method vindicated, jet propulsion fundamentally deficient, § 201; variety of methods of, § 201; the screw propeller, § 202 et seq.