Assertion: hovercraft's engine | /r/ObjectUse | used for thrust
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Source sentences:
text: This will vary according to type, size of engine, whether 1 or 2 engines are used, for lift and thrust, the payload – weight of passengers and fuel, whether you stop and start frequently since this takes more effort especially on water, and conditions such as strong headwind or tail wind.
text: Either 2 separate engines are used for thrusters & central fan OR both are driven by the same engine with the help of gears.