Italy's ____ da Vinci made the first real studies of flight in the 1480s and created numerous drawings that illustrated his theories. The Ornithopter flying machine was never actually created but suggested how man could fly. The modern day ____ is based on this concept. The ____ brothers, Joseph Michel and Jacques Etienne Montgolfier, were ____ of the first hot air balloon. In 1783, the first passengers were a sheep, ____ and duck: it reached about 6,000 feet and travelled more than 1 ____. After this success, they achieved their first manned flight on November 21, 1783. German ____, Otto Lilienthal, produced a ____ that would carry a human passenger/pilot. Based on his studies of birds, he wrote a book on ____ that was published in 1889 and this text was used by the Americans - the famous ____ brothers - as inspiration for their designs. After more than ____ flights, Lilienthal was killed when he lost control in strong wind and crashed into the ground. In modern times, ____ Airport in London is the UK's largest and busiest airport as well as the busiest airport in ____; almost 20 million passengers use the airport each year.

EARLY FLIGHT GAP FILL

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