Bell X-1 in flight, the first supersonic aircraft
First supersonic aircraft. Bell X-1 aircraft used by Charles "Chuck" Yeager to fly faster than sound on 14 October 1947. The X-1 was carried into the air under a converted B-29 bomber, and released at 6800 metres altitude over Muroc, California, USA. The X-1 was powered by a four-chamber XLR-11 rocket engine that generated 26.5 kilonewtons of thrust. This pushed the aircraft to a speed of 1078 kilometres per hour at an altitude of 12, 800 metres - equivalent to 1.015 times the speed of sound. Yeager unofficially named the aircraft "Glamorous Glennis" after his wife. It is now displayed in a museum in Washington DC, USA.
© U.S. AIR FORCE/SCIENCE PHOTO LIBRARY
Detail of a Viking tapestry from Skog Church, Halsingland, Sweden, 12th century. Artist
Detail of a Viking tapestry from Skog Church, Halsingland, Sweden, 12th century. Tapestry detail illustrating the struggle between Christianity and paganism. The three figures to the right are ringing bells to frighten away evil spirits and pagan gods. From the Statens Historiska Museum, Stockholm.
© Werner Forman Archive / Heritage-Images
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