## The Physics of Flight |

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### Contents

General Principles | 5 |

Relative Wind Wind Tunnels | 7 |

Streamlines and Streamtubes | 12 |

51 other sections not shown

### Common terms and phrases

adhesion aerodynamic ailerons air speed aircraft airfoil airplane altitude angle of attack angular aspect ratio bank Bernoulli's theorem biplane blade element boundary layer camber characteristic curves chord circulation value CL and CD Cl/Cd climb component constant cross-section decreases direction distance downwash downwash velocity drag coefficient dynamic engine equal equation equilibrium excess pressure flat plate flow past fluid formula ft/sec fuselage gliding angle gyro gyroscopic horsepower increase induced drag kinematic viscosity lbs/ft2 leading edge level flight lift and drag lift coefficient load maximum value measured miles/hr momentum monoplane obtained parallel parasite drag perpendicular pilot pitch planform position produce propeller thrust pV2S relative wind resulting Reynolds number rotation rotor rudder Similarity of flow solid body span stability stagnation point streamline pattern streamtube torque trailing edge travelling tube tunnel turbulence two-dimensional flow vector vortex line vorticity weight wind force wind velocity wing area wing profile wing tips yields