Page 84 - The Miracle of Migration in Animals

THE MIRACLE OF MIGRATION IN ANIMALS

The special curved shape of birds’ wings is imitated in the design of aircraft
wings. Airfoil shape creates an airlift effect due to the airflow around the
wings—a great supportive force during take-off for both birds and aircraft.

crease in pressure. As the upper surface of the wing has greater cam-
ber than the lower, the air flows faster over the wing than under it.
This lowers the air pressure above the wings, and the difference in
pressure between the upper and lower surfaces causes lift. 25

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