Quadcopters tend to have very poor efficency because of their high disk loading. High disk loading– that is, how much weight ...

Controllable-pitch propellers have been developed and produced on the Baltic coast of Germany since 1962 – initially in Rostock, and then in Wismar from 1964. The first units were manufactured for 86 ...

Presentation of the DNV GL certificate by Dr. Olaf Richter (right) in the presence of his inspector, Dieter Ekat (2nd from left) who supported the test series, to Piening boss Mathias Pein (2nd from ...

Until recently Hamilton has had a virtual monopoly of the propeller business. Lately, however, it and its most formidable rival, famed old Curtiss-Wright Corp., have been seeking another ...

The stock market crash of 1929 and the Great Depression threatened the continued existence the American aviation industry just as it started to grow in the wake of unprecedented government legislation ...

Click to open image viewer. In the late 1950s and early 1960s, several aircraft manufacturers developed Vertical Take Off and Landing (VTOL) aircraft under military research contracts. One unexpected ...