Bertrand Piccard and Brian Jones when they flew around the world in 1999. They were flying a very special balloon, a combination of a helium and a hot air balloon and were aloft for 477h 47m.
The longest someone has flown in the air is 50 hours!
The air inside a hot air balloon is heated by burning fuel (usually propane). The air is kept inside the balloon so it doesn't readily mix with the cold air outside the balloon, but there is of course energy transfer from the hot air to the fabric and then to the surrounding colder air. This is why a balloon needs to fire the burner periodically, to reheat the air that has cooled or been lost through venting (to cause the balloon to rotate or fly lower)
Hot-air balloons function on the principle that warm air rises, and the balloon mechanism holds onto hot air to ascend. Despite this, the hot air can't stay in the balloon forever, the opening at the top of the balloon allowing a slow and steady flow of the hot air out of the balloon and a gentle descent to the ground.
If there is warm air in the balloon, cooler air makes the balloon rise and if there is cold air in the balloon warmer air makes the balloon fall.
To break the world record for keeping a balloon in the air the longest, you will need a high-quality helium balloon to ensure it stays buoyant, a lightweight and durable string to control its movement, and a reliable air pump for quick inflation. Additionally, having a comfortable space with minimal distractions and potential obstacles is crucial for maintaining focus during the attempt. A timer or stopwatch to track the duration is also essential.
The heat from the sun causes the air molecules inside the balloon to expand, increasing the pressure within the balloon. If the pressure becomes too high, the balloon will burst to release the excess pressure.
Probably, they have world record for everything else!
i think it takes a long time for a hot air balloon to fly
Heat causes substances to expand. When left in the sun the air inside the beach ball will expand. If the air expands enough it will burst the beach ball.
The longest someone has flown in the air is 50 hours!
On January 15, 1991, the Virgin Pacific Flyer balloon completed the longest flight in a hot air balloon when Per Lindstrand (born in Sweden, but resident in the UK) and Richard Branson of the UK flew 7,671.91 km (4,767.10 mi) from Japan to Northern Canada.
No, hot air balloons are kept up in the air by buoyancy, the same thing that keeps helium balloons up in the air, or that keeps ships afloat. The hot air in the balloon is less dense than the surrounding air, so the balloon weighs less than the air it displaces, at least while the balloon is rising.
As time passes, a balloon will gradually deflate due to the air molecules inside the balloon escaping through the balloon material. This will result in a reduction in the size of the balloon over time.
The air inside a hot air balloon is heated by burning fuel (usually propane). The air is kept inside the balloon so it doesn't readily mix with the cold air outside the balloon, but there is of course energy transfer from the hot air to the fabric and then to the surrounding colder air. This is why a balloon needs to fire the burner periodically, to reheat the air that has cooled or been lost through venting (to cause the balloon to rotate or fly lower)
Hot-air balloons function on the principle that warm air rises, and the balloon mechanism holds onto hot air to ascend. Despite this, the hot air can't stay in the balloon forever, the opening at the top of the balloon allowing a slow and steady flow of the hot air out of the balloon and a gentle descent to the ground.
In 1783
When a balloon is placed in the freezer, the air inside it contracts and decreases in volume due to the cold temperatures. The rubber of the balloon becomes less flexible in the cold, making it so the balloon can't stretch to accommodate the reduced air volume inside. This increase in pressure causes the balloon to burst.