What is the Air-speed Velocity of an Unladen Swallow?


The air speed velocity of unladen swallow is 38.6 kilometres per hour. Swallows are passerine birds which are grouped in the family Hirundinidae. The birds have fork tails and are distributed in most continents except Antarctica.
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Although 47 of the 74 worldwide swallow species are found in Africa, only two species are named after the continent: the West African Swallow and the South African Swallow also known as the South African Cave Swallow. A 54-year survey of 26,285 European Swallows captured and released by the Avian Demography Unit of the University of Capetown finds that the average adult European swallow has a wing length of 12.2 cm and a body mass of 20.3 grams.
An Unladen Swallow has an average air speed velocity of 38.62 km per hour. You need to determine the wing length and body mass of the bird which are used to determine the velocity. Several estimates also need to be carried out on the wave form of the wing to determine the strouhal value in cruising flight.
The estimated speed of a European unladen Swallow is 11 meters per second or 24 miles per hour
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