IN his article on the Cierva auto-gyro in NATURE of October 31, Prof. Bairstow repeats an argument originally used against the helicopter, that the longer spiral path of the blades, as compared with ...

The aircraft goes by several other names: a gyroplane, an autogyro or a rotoplane -- to name a few. The FAA uses the term gyroplane. So, we will, too. Gyroplanes were invented by Juan de la Cierva in ...

For 20 minutes last week Parisians watched one of Juan de la Cierva’s autogyros (TIME, Oct. 1) hang stationary in the air. The feat was possible because the autogyro can keep in horizontal flight at ...

The report carried by The Times (January 9) regarding the inventor of the autogyro is misleading. The autogyro was invented by Juan de la Cierva and was first flown successfully in January 1923. The ...

Tuesday's fatal gyroplane crash in Highlands County has raised questions about the aircraft at the center of the tragedy. The aircraft goes by several other names: a gyrocopter, an autogyro or a ...

THE argument for relative efficiency of aeroplane v. auto-gyro as given in my article does not depend on the area of the wings used, and it would seem that Munk can only reach his conclusion by ...