Dyson makes several different models of self-propelled vacuums.
a self-propelled aircraft
self propelled reaper
A ship is propelled by wind or a propeller, and an airplane is propelled by a jet engine, propeller or turboprop.
Some lawn mowers are called self propelled because they require no electric plug to turn on. They have batteries in them that power them and make them work.
Lunokhod-1 was the first self-propelled vehicle on the moon.
An aircraft with an engine. A non-self propelled aircraft would be a balloon or a glider.
the wright brothers were the first in the world to create a self sustained and self controlled flight via the huge canard (rear propelled) plane. So yes, the wright flyer was the first working airplane in the world, not only the U.S.
I would say self propelled. You can always release the self propelled part to make your turns, or if it's front wheel drive you can just push down on the handle and raise the front to turn.
Very carefully.
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