

World War
I (1914-1918) greatly advanced aeroplane development. Early in the
war, both sides discovered the usefulness of the aeroplane for locating
enemy forces and military bases. Engineers designed more powerful
engines to put swift fighter planes and heavy bombers into the skies.
Germany, the United States, France, and England began to turn out thou-sands
of these planes. Dogfights (air battles between fighters) became
common. Seaplanes were used for taking pictures of enemy naval forces
and for bombing enemy submarines. At the beginning of the war, most planes
could fly 60 to 70 mph (97 to 110 kph). By the war's end, many could
go 130 mph (209 kph) or faster. Hugo Junkers, a German inventor and
manufacturer, created one of the most influential aeroplane designs of
the war. His plane, called the Junkers J 1, made its first flight
in 1915. The plane was the first to be made entirely of metal and
the first to have cantilever wings. Earlier aeroplane wings were
supported by struts (braces) between the body and wings, which slowed it
down. Cantilever wings are completely supported by an internal framework.
| The outstanding early British fighters included the
Sopwith Pup (1916) and the Sopwith Camel (1917), which flew as high as 5800 m (19,000 ft) and had a top speed of 190 km/h (120 mph). Notable French fighters included the Spad (1916) and the Nieuport 28 (1918). By the end of World War I, both sides had fighters that could fly at altitudes of 7600 m (25,000 ft) and speeds up to 250 km/h (155 mph). |
![]() |