Because hot air is lighter than cold air, the heated air inside the ballon produces lift for flying. Most hot air balloons use a compressed gas burner to heat the air to around 212 degrees f in order to achieve ability to make a balloon fly...
http://answers.ask.com/Vehicles/Aviation/how_do_hot_air...
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In a hot air balloon, a gas burner is used to heat air to a temperature of about 212°F (100°C). Since hot air is lighter and less dense than the cool air around the balloon, the heated air causes the whole balloon to rise. When the air insi...
http://www.boeing.com/companyoffices/aboutus/wonder_of_...
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Two fundamental principles of physics govern hot air balloon flight. They are not the same principles that govern airplane flight. At a hot air balloon festival, hot air balloons slowly fill and then rise majestically in the predawn sky. Th...
http://physics.suite101.com/article.cfm/why_do_hot_air_...
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Great article explaining how hot air balloons fly and what it takes to become a balloon pilot. ... Have you ever wondered what keeps a hot air balloon flying? The same principle that keeps food frozen in the open chest freezers at the grocery store allows hot air balloons to fly.
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www.hotairballooning.com/howfly.php
www.hotairballooning.com/howfly.php
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Hot air balloons are also an ingenious application of basic scientific principles. In this article, we'll see what makes these balloons rise up in the air, and we'll also find out how the balloon's design lets the pilot control altitude and vertical speed.
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travel.howstuffworks.com/hot-air-balloon.htm
travel.howstuffworks.com/hot-air-balloon.htm
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It might seem like hot air balloons would be a little outside of our area of interest, but actually, since the radiation we are most interested in observing is absorbed by the Earth's atmosphere, many of our high energy astrophysics experiments are flown on balloons.
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imagine.gsfc.nasa.gov/docs/ask_astro/answers/970106a.ht...
imagine.gsfc.nasa.gov/docs/ask_astro/answers/970106a.html
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For our group, it's a sneak peek ahead of the Albuquerque International Balloon Fiesta, when hundreds of hot-air balloons of all shapes and sizes will fill the skies from Oct. ... Ben Abruzzo and Maxie Anderson -- for whom the local balloon museum is named -- were part of the first team to fly across the Atlantic Ocean,
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www.canada.com/topics/travel/usa/story.html?id=44a88714...
www.canada.com/topics/travel/usa/story.html?id=44a88714-8f33-4f6e-b09f-a2c8433004ed
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Hot-air balloons fly over the Palote dam during the "Hot Air Balloons Festival" in the city of Leon, in the state of Guanajuato, Mexico November 17, 2008.(Xinhua/Reuters Photo); Photo Gallery>>>
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news.xinhuanet.com/english/2008-11/18/content_10376806....
news.xinhuanet.com/english/2008-11/18/content_10376806.htm
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Introduction to Hot Air Balloons. Part of the series: How to Fly a Hot Air Balloon. Learn about various areas of hot air ballooning, tips and techniques for beginning ballooning in this free ballooning video ... Going Hot in Hot Air Balloons ... Part of the video series: How to Fly a Hot Air Balloon...
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www.ehow.com/video_4413527_introduction-hot-air-balloon...
www.ehow.com/video_4413527_introduction-hot-air-balloons.html
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