The Flettner Airplane made its debut in the 1930s. Instead of wings, it flies using rotating cylinders that stick out from either side of its body. We’ll tell you about its inventor, and show you how ...
From towing kite propulsion to sails fitted with solar panels, modern engineers have been working hard to find ways to make our increasing reliance on big cargo shipping more energy efficient and ...
On 19 November 1924, a ship slowly manoeuvred through the Port of Kiel. On board were Ludwig Prandtl and Albert Betz from the Aerodynamic Research Institute (AVA) in Göttingen – a predecessor of today ...
The twin Flettner rotor ship Buckau made its maiden voyage into Grangemouth in 1925 It must have been a bizarre sight when a freight ship, equipped with two large rotating towers, made its way under ...
The increasing hinge moments (forces required to move control surfaces) on larger, faster aircraft made manual control challenging, necessitating solutions beyond simple mechanical advantage or basic ...
Idlers along the Charles River in Cambridge, Mass., last week beheld a scene out of the sepia supplements of the Sunday papers. A beamy, 35-foot Navy cutter was moving steadily by, showing neither ...
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