A Commonplace Book

Category: aircraft...

  • a flight in an open-cockpit aircraft
  • on a long airline flight, sitting next to someone who really does not want to talk
  • aircraft have four forces acting on them: lift (upward-acting), drag (a retarding force of the resistance to lift and to the friction of moving through the air), weight (downward effect of gravity), and thrust (forward-acting provided by the propulsion system)
  • The wings of birds are specially curved surfaces called airfoils -- which aircraft depend on, too.
  • The kite is the ancestor of the airplane
  • aerial navigation involves plotting the aircraft's course (heading) and airspeed, and speed and direction of the wind
  • On the wings there are three types of articulated flap, the wing seats, the trailing edge flaps, and the spoilers. In the tail assembly, the rudders and elevators are the articulated flaps.
  • The three movements of an airplane are pitch, roll, and yaw. These are changes exerted on the aircraft in flight that affect its behavior and a pilot must know how to correct them.
  • Since the days of the mythical birdman Daedalus in ancient Greece, people have longed to fly like birds.
  • Leonardo da Vinci never tried to build the flying machines he sketched. They never would have flown because imitating bird flight is more complicated than even Leonardo understood.
  • The large biplane bombers built toward the end of the first World War formed the basis for the first airliners in peacetime.

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