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Keterangan
English: In 1978, Ben Abruzzo, Maxie Anderson, and Larry Newman took off from Presque Isle, Maine in the gas balloon Double Eagle II and successfully crossed the Atlantic. The flight took 137 hours, 6 minutes and covered 5,021 kilometers (3,120 miles) landing in a wheat field near Miserey, France.

This was the first successful transatlantic crossing by a manned balloon. After Charles Lindbergh’s famous 1927 flight across the Atlantic, ballooning across the ocean remained one of the great, unconquered aviation challenges. Abruzzo and Anderson failed at their first attempt in 1977. Less than a year later with a long-time friend, Newman, the group succeeded.

Extreme temperature variations during the flight caused ice to build up outside the balloon each night, and heat from the sun caused helium to expand during the day. This led to what the pilots called the “Big Drop.” On Aug 6, 1978, Double Eagle II descending to 1,219 meters (4,000 feet) due to atmospheric conditions and then rose to 7,315 meters (24,000) feet the same afternoon after being heated by the sun.
Tarikh
Sumber https://airandspace.si.edu/stories/editorial/august-11-1978-crossing-atlantic-balloon
Pengarang Unknown authorUnknown author

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This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code. Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
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The gas balloon Double Eagle II over Presque Isle, Maine attempting to cross the Atlantic

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11 Ogos 2016

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