EARLY WHIRLYBIRD Crossword Clue
EARLY WHIRLYBIRD Crossword Clue
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Crossword Puzzle Infos
The term 'Early Whirlybird' is a reference to the Giro, an early type of helicopter developed in Italy in the 1920s. The Giro was the first successful helicopter to use a single main rotor and tail rotor configuration, which is now the most common type of helicopter design. It was also the first helicopter to be mass-produced and used for commercial purposes.