flight

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flight

(flīt)
1. The motion of an object through air.
2. Escape.
[O.E. flyht]

flight

any locomotion through air, either active or passive (gliding). Active flight is brought about by the movement of wings by muscles as in bats, birds and insects; gliding involves a minimum of muscular effort and is found only in some larger birds and certain mammals adapted for flight, such as the flying lemur or flying fox. In birds, muscles are attached directly to the wings and are of two main types: depressor muscles which produce the downstroke and run from the humerus to the STERNUM, and elevator muscles which produce the upstroke and are attached to the upper surface of the HUMERUS by a tendon which runs through the pectoral girdle to the sternum. In insects such as bees, wasps, flies, beetles and bugs, the muscles raising and lowering the wing are attached to the walls of the thorax (indirect flight muscles) and not to the wings and are called asynchronous fibrillar muscles. Direct flight muscles attached to the wings alter the angle and adjust the wings to the resting position. In other insects, for example, the dragonflies, the flight muscles are called synchronous muscles, being attached directly to the wings. Asynchronous wing beats are much slower than synchronous ones.
References in periodicals archive ?
Test and refine their designs by measuring and recording data on their load-carrying ability, distance and height obtained, and making at least one adjustment that improves these statistics based on their knowledge of the basic principles of flight.
The teachers, who were chosen by the Supreme Education Council (SEC), were trained by staff from the Museum of Flight in lessons to take back to the classroom about the science of aviation -- from the principles of flight to the properties of air.
During the course, the students completed five units of instruction, spanning all aspects of aviation from history through career exploration, with an emphasis on principles of flight and piloting.
Oman Air and Boeing Commercial Airplanes Communications welcome delegates from throughout Oman to an intensive training seminar covering a range of topics, such as the principles of flight and the design, manufacture and testing of commercial jetliners.
6] David Allerton, Principles of Flight Simulation, Wiley, 2009.
Among the topics are principles of flight, weather, navigation, the airspace system, radio communications, and medical facts for pilots.
The researchers are studying insect flight in order to "distil the biological principles of flight control".

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