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((flap
an act of flapping something, typically a wing or arm, up and down…
flap
an act of flapping something, typically a wing or arm, up and down or from side to side.
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millennium: an anniversary of a thousand years. 
Ornithopter: a machine designed to achieve flight by means of flapping wings.
aerodynamics: the study of the properties of moving air and the interaction between the air and solid bodies moving through it
attempted: make an effort to achieve or complete
crop-dusting: the spraying of powdered insecticide or fertilizer on crops, especially from the air.
enormous: very large in size, quantity, or extent.
controllable: capable of being directed or influenced.
accessible: (of a place) able to be reached or entered.
manoeuvrable:(especially of a craft or vessel) able to be maneuvered easily while in motion.
nationality:an ethnic group forming a part of one or more political nations.
drift:a continuous slow movement from one place to another.
Manned=(especially of an aircraft or spacecraft) having a human crew.
aircraft=an airplane, helicopter, or other machine capable of flight.
Resulting= to spring, arise, or proceed as a consequence of actions, premises, etc.; be theoutcome .
Safety= the condition of being protected from or unlikely to cause danger, risk, or injury.
far-sighted: showing a prudent awareness of future possibilities.
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