20th Century
During World War II, a large number of barrage balloons were inflated over the city of London in an effort to obstruct Luftwaffe air attacks during the Battle of Britain. Whatever their effectiveness, they were a cheap defense but did not stop heavy damage inflicted on Londoners during the Blitz, probably because the Heinkel He 111 bombers flew too high. Nonetheless, some 231 V-1 flying bombs were destroyed.
In the early and mid-20th century, hydrogen balloons were used extensively in upper-atmosphere research in such projects as Osoaviakhim-1, the Stratobowl launches, Project Manhigh, and Project Strato-Lab. A series of ascensions set a number of high-altitude records before space flight eclipsed ballooning as an endeavor. When governments lost interest in manned balloons, private citizens continued to strive to set records, especially for long distances, and to achieve "first" marks (such as Double Eagle II (first to cross the Atlantic Ocean) and Breitling Orbiter 3 (first to circumnavigate the world).
Although manned high-altitude balloon ascensions are still undertaken, they are more likely to be the work of adventurers than researchers.
Read more about this topic: History Of Ballooning
Famous quotes containing the word century:
“A strange effect of marriage, such as the nineteenth century has made it! The boredom of married life inevitably destroys love, when love has preceded marriage. And yet, as a philosopher has observed, it speedily brings about, among people who are rich enough not to have to work, an intense boredom with all quiet forms of enjoyment. And it is only dried up hearts, among women, that it does not predispose to love.”
—Stendhal [Marie Henri Beyle] (1783–1842)