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Fan or Multi-Swing Wings, to Reduce Wing Loading in large Multi-Seat Passenger Aircraft to Make Possible "Pancake" Emergency Landings, Using a Stabilising Parachute, and to enable an Aircraft, Convertible to an Automobile, to be Stored in an Automobile Garage
Mathematical model of the solar radiation force and torques acting on the components of a spacecraft(Mathematical model of solar radiation force and torques acting on components of spacecraft in vectorial form)