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I does not have to be "sustained" for more than a few minutes to be called a flight. https://fr.wikipedia.org/wiki/Deltaplane https://fr.wikipedia.org/wiki/Del
by Koshkin 4y ago
I does not have to be "sustained" for more than a few minutes to be called a flight.
https://fr.wikipedia.org/wiki/Deltaplane https://fr.wikipedia.org/wiki/Deltaplane
- goto11 4y agoSure, but beside the point. There are many historical examples of heavier-than-air flight (kites, gliders etc.), but without means of self-propulsion it is not very practically useful.