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Aeronautic terminology in dribs and drabs... <b>O as "Orthopter"</b>
Rome, Italy - Today only experimental
 
				Orthopter, heavier-than-air craft that is propelled by the flapping of wings. Heavier-than-air craft is a non-buoyant aircraft that requires a source of power to hold it aloft and to propel it. The orthopter is an airplane with dynamic lift in which the relative motion between fluid and body achieves through an alternating movememt of the wing from bottom to up (like several insects, belonging...
					AVIONEWS - World Aeronautical Press Agency - 1081199
					
AVIONEWS - World Aeronautical Press Agency
				
				
			AVIONEWS - World Aeronautical Press Agency