Assertion: hovercraft's propeller | /r/CapableOf | introduce twist
Facets:
value: along the length of the blades
type: OTHER
Source sentences:
text: While some earlier engineers had attempted to model air propellers on marine propellers, the Wright Brothers realized that a propeller is essentially the same as a wing, and were able to use data from their earlier wind tunnel experiments on wings, introducing a twist along the length of the blades.