Related Clues:

• It provides thrust in either direction
• Blender spinner
• Revolving part of a machine
• Revolving aerofoil
• Blade: some antihero to respect
• It's a chopper blade, whichever way round it goes
• Generator's spinning part
• What may go round and round, and up and down?
• Palindromic turbine part
• Whirler on a whirlybird
• What goes round and round and round
• It provides thrust up or down
• Helicopter blade device
• Spinner in a generator
• Turner Prize contradicting itself: so protesting, every second