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noun

impeller

the blade of a rotor (as in the compressor of a jet engine)

In a sentence

Six example sentences with impeller, each labelled with its topic.

  • A cracked impeller inside the pump housing sent vibration through the whole rack until the maintenance team swapped the unit.

    Technology

  • Engineers redesigned the impeller so migrating eels pass through the intake unharmed instead of being drawn into the spinning vanes.

    Environment

  • The lab measured how fast each impeller could move viscous fluid, logging revolutions against pressure at the outlet.

    Science

  • The jet boat's impeller draws water through the hull and fires it out the stern, so nothing spins beneath the boat.

    Travel

  • The tower's chilled water loop failed when a pump impeller wore thin, and the top ten floors warmed within an hour.

    Architecture

  • Victorian foundries cast each mine pump impeller in one piece, since a loose blade would shake the whole engine apart.

    History

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