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A gore is the sector of a curved

surface that lies between two close lines

of longitude and may be flattened

to a plane surface with distortion.

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the valve is used by the pilot of the

HAB to release hot air to slow ascent (lift)

or start/increase descent (landing).

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During the second world war,

Japan used the HABs as bombs.

from late 1944 to early 1945.

they were useless and only caused

the death of six people.

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www.padlet.com/messi1/thisisstupid

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http://www.sciencekids.co.nz/sciencefacts/vehicles/hotairballoons.html

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http://en.wikipedia.org/wiki/Hot_air_balloon

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The inside temperature of a

envelope is uselly kept under

120 degrees celsius.

its called a envelope because ...

I don't really know why. Guess

the maker thought it looked like one.

The most common shape is just round little like a lamp, but there is annimal shapes and other shapes that are used in festivales.

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The baskets come i different sizes

and can carry from 2-30 passengers

a time.

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Hot Air Balloons History Channel Documentary

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A little brief history of the hot air balloon. Soundtrack: Vive la vida by: Coldplay

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The scientist named Pilatre De Rozier,

launched the HAB Aerostat Reveillon.

Because this was never tested before

so the choose of passengers was: a sheep,

a duck and a rooster. Animal cruelty...sure

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A hot air balloon is inflated partially with cold air from a gas-powered fan,

before the propane burners are used for final inflation.

The basket is commonly made of woven wicker, rattan or aluminium .

The burner works as a gas pedal for the ballon. It unites liquid propane mixed

with air, ignites the mixture and directs the flame into the mouth of the envelope.

In case of ignition problems the pilot has a backup ignition, ex: a flint spark lighter.

Fuel tanks are cylindrical pressure vessels that are made of aluminium, stainless steel

or titanium. In one end there is a valve to feed the burner and refuel it.

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The origion of HAB was given from the chines

airborn lanters from 220-280 B.C.

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The first ballon ride was on the 21 november 1783, Jean-Francois

and Francois Laurent.

The Ballon they flew on was created 14/12-1782 by the Mongolfier brothers.

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This is a presentation about hot air ballons and how they work.