Category:Aircraft
From ArticleWorld
An aircraft is any machine that can conduct an atmospheric flight. It can be either heavier than air (helicopters, autogiros, airplanes and so on) or lighter than it (airships, hot air balloons) with several types of such machines possible based on different designs, propulsion methods and usage by institutions or individuals. Categorizing aircrafts is done by many criteria and can be diverse, based on the application and even the type of load it transports: objects and animals or people.