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August 11, 2009Traditional rotor blades4 minutesPlayHow rotor blades are constructed to cut through the air and keep the helicopter off the ground....moreShareView all episodesBy The Open University3.544 ratingsAugust 11, 2009Traditional rotor blades4 minutesPlayHow rotor blades are constructed to cut through the air and keep the helicopter off the ground....moreMore shows like The physical world: helicopters - for iPod/iPhoneView allBon départ: beginners' French - Audio171 ListenersExploring Philosophy - Audio18 ListenersJames Joyce’s Dublin - Audio4 ListenersWriting Poetry - Audio23 ListenersPhilosophy and the Human Situation - Audio12 ListenersWriting family history - Audio4 ListenersDoreen Massey: Space, Place and Politics - Audio2 ListenersAndante: beginners' Italian - Audio60 Listeners9/11: Attack on the Wires - for iPod/iPhone3 ListenersThe hidden history of learning disability - Audio0 Listeners
August 11, 2009Traditional rotor blades4 minutesPlayHow rotor blades are constructed to cut through the air and keep the helicopter off the ground....more