Why does the volume of a balloon increase during the day but at night decreases?
When the ballon is made of elastic material, it expands because of the excess pressure inside. Its volume increases and its internal pressure decreases. As it expands, its buoyancy increases, but not the pull of gravity, so it continues to rise as a result of the expansion.
What is the best time to launch balloons Why?
morning
How hot is it inside a hot air balloon?
For typical atmospheric conditions (20 °C or 68 °F), a hot-air balloon heated to 99 °C (210 °F) requires about 3.91 m3 of envelope volume to lift 1 kilogram (equivalently, 62.5 cu ft/lb).
What do you wear on a balloon ride?
Casual attire is absolutely appropriate, even expected on a hot air balloon ride. So, aside from a few exceptions, just dress comfortably. The weather up high is about the same as it is at ground level, so dress as you normally would for a walk in your local park.
Is it noisy in a hot air balloon?
Aircraft flying at speeds greater than Mach I (the speed of sound) would cause an unacceptable disturbance or impact because of the characteristics of the sonic boom. Hot air balloons; although usually associated with clear, crisp, quiet mornings, are actually inherently noisy.
Is hot air balloon ride safe?
Unfortunately, balloon accidents are not as rare as people might think. Statistics from the National Transportation Safety Board indicate there have been 760 hot air balloon accidents in the United States since 1964. In those accidents, 967 people have been injured and 73 people have been killed.
What are the chances of a hot air balloon crashing?
During the 12-yr period, 78 hot-air balloon tours crashed, involving 518 occupants. There were 91 serious injuries and 5 fatalities; 83% of crashes resulted in one or more serious or fatal outcomes.
Are hot air balloons tethered?
What is a Tethered Balloon Ride? A tethered balloon ride is one where the balloon boards passengers then goes aloft to a low altitude while remaining tethered to the ground using straps or lines. Ideal for people with fears of flying or heights, it is the safest possible way to experience a hot air balloon ride.
What are hot air balloons used for mostly today?
Hot-air balloons are commonly used for recreational purposes. In addition to quiet morning or afternoon flights drifting cross-country to enjoy the view, many balloonists enjoy competitive sporting events and attempting to set new records. A balloonist may fly alone in the basket or carry several passengers.
Can hot air balloons fly at night?
It is possible for balloons to fly at any time during daylight hours on a calm winter’s day. Very rarely, sporting and recreational balloon flights are conducted at night, but these are invariably planned to land after sunrise. Activity is usually higher at weekends and on public holidays.
Why do you think most hot air ballooning is done in the morning?
Flying our hot air balloons in the morning ensure good use of the stable winds which are associated with colder air present just after sunrise. While temperatures can be colder during the winter months the large burner on the balloon provides lots of nice warmth as your lift off from the ground.
What is the longest hot air balloon flight?
5,209 miles
Can hot air balloons fly all day?
When surface winds are calm, hot air balloon ride pilots can control the altitude of the balloon very finely by heating or venting the air inside. Birds and glider pilots love them but for a hot air balloon; thermals make it very difficult to control the balloon. …
What is the best weather for flying a hot air balloon?
The best weather for hot air balloon flying is blue skies, light winds, and little or no rain. Strong winds and heavy rain make it too dangerous to fly, and pilots will not take risks. Some balloon flights do operate in winter, but there is more of a chance that the flight will be cancelled due to bad weather.
Do Hot air balloons fly better in hot or cold weather?
The temperature difference between inside and outside the balloon envelope determines the lift of a balloon, so balloons can fly well in cold weather. However, if the liquid propane in the fuel tanks is too cold it may become too cold for the propane to work. What is visibility?
What wind speed is safe for hot air balloons?
4 to 8 miles per hour