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3 Topic Pages Found in Aeronautics & Watercraft and starting with the letter P
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petrol engine

The most commonly used source of power for motor vehicles, introduced by the German engineers Gottlieb Daimler and Karl Benz in 1885. The petrol


one of a number of floats used chiefly to support a bridge, to raise a sunken ship, or to float a hydroplane or a floating dock. Pontoons have been


device consisting of a hub with one or more blades that propels a craft to which it is attached by rotating its blades in a fluid such as air or