Do you know how hot air balloons carry humans up and down?
Hot air balloons use heated air or certain gases such as hydrogen or helium whose density is lower than that of the air outside the balloon to create buoyancy for flight.
Hot air balloons mainly through their onboard heater to adjust the temperature of the air in the airbag, to control the purpose of balloon lift. The basic principle of a hot air balloon is thermal expansion and contraction. When the air is heated and expanded, the specific gravity will become lighter and rise upward.
1. Driving
Hot air balloon is not really "piloted", it is with the wind. Since the wind has different directions and speeds at different heights, the pilot can choose the appropriate height according to the direction of flight needs.
2. Speed
A hot air balloon floating speed fast or slow is determined by the speed of the wind, because the hot air balloon itself does not have a power system, the flight speed depends entirely on the wind speed. The Balloon's maximum descent speed of 6 m / s, and the maximum speed of 5 m / s rise.
3. The best time to fly
The best time of day to fly a hot air balloon is when the sun is just rising or one or two hours before the sun goes down because at this time the wind is usually calm and the airflow is stable.
4. Flight duration
A hot air balloon usually carries enough LPG or propane to last for two hours, but some factors also affect the duration of the flight, such as temperature, wind speed, basket weight (including passengers), and the specific time of the flight in the day.
5. Recovery
The recovery of a hot air balloon requires the help of a ground crew who follows the floating balloon in a truck or minivan and arrives at the landing site in advance.
A hot air balloon drifting requires the services of three to four ground crews and ground radio equipment to ensure a safe and successful flight.
6. The composition of the hot air balloon
A hot air balloon, more strictly speaking should be called a sealed hot air balloon, composed of three parts: balloon, basket, and heating device.
Balloon skin is made of reinforced nylon (some hot air balloons are made of polyester). Despite its light mass, it is extremely strong and the balloon is airtight.
If work and life make you feel tired, take a hot air balloon ride and let the different scenery cure you.
