What Makes Airplanes Fly?: History, Science, and Applications of AerodynamicsNew York, 1991 - 225 strán (strany) |
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Strana 96
... friction coefficients on which the mean values of Figure 7.7 are based . Again this expression applies to smooth surfaces . Attain- ing the required smoothness for minimum surface friction - for example , for an airfoil - is a serious ...
... friction coefficients on which the mean values of Figure 7.7 are based . Again this expression applies to smooth surfaces . Attain- ing the required smoothness for minimum surface friction - for example , for an airfoil - is a serious ...
Strana 97
... friction drag . To get a feeling for actual values of surface friction and for what its effects on an aircraft might be , let us consider the friction factor on a flat plate for a Reynolds number Re , = 5 × 105. One can achieve either a ...
... friction drag . To get a feeling for actual values of surface friction and for what its effects on an aircraft might be , let us consider the friction factor on a flat plate for a Reynolds number Re , = 5 × 105. One can achieve either a ...
Strana 98
... friction drag prevails . We shall see later that a modern airliner also has a high frictional - drag fraction of total drag , but the ratio of friction drag to total drag of an airship is not reached . The total drag of the airship body ...
... friction drag prevails . We shall see later that a modern airliner also has a high frictional - drag fraction of total drag , but the ratio of friction drag to total drag of an airship is not reached . The total drag of the airship body ...
Obsah
Milestones of the Modern Age | 25 |
The Nature of Liquids and Gases | 41 |
The Atmosphere of the Earth | 47 |
Autorské práva | |
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aerodynamic drag aeronautics aircraft airfoil airliners airplane airship altitude angle of attack Appendix apply atmosphere automobile aviation balloon Bernoulli's equation birds body boundary layer Cayley Cayley's Chapter computed constant craft cylinder density dimensionless dimensions discussed distance drag and lift drag coefficient effect energy engine experiments fact flight speed flow field flow speed fluid mechanics flying machines fuel gases given gliders increase inviscid jet turbines km/h laminar lift force Lilienthal liquids Mach number Magnus effect mass motion moving ornithopter parameters passengers pilot plane plate pressure problems produced propeller propulsion range ratio Reynolds number rocket shape shear shock wave shown in Figure space speed of sound sphere steady streamlines supersonic surface friction Table temperature test section thrust tion trailing edge transport tube turbojet turbulent boundary layer turn unit values velocity vortex vortices wind tunnel wing Wright brothers Wright Flyer