The balloon skin must hold sufficient volume of lighter, hot air in order to pull the associated weight of the skin itself, the onboard gas cylinders and heating apparatus, any ropes which are needed to hold a dangling basket, the basket, counter-weights, passengers, supplies, and any other items of any weight up through the denser cold air outside it.
Heat makes for less dense molecule compaction because those molecules are moving in relation to the charge of energy they are holding. Less dense molecules rise above the more dense molecules which surround them. The pull of gravity on the ensemble must be overcome, so there must be sufficient volume within. Thus, a bigger balloon can lift more weight.
well, hot air balloons are made from nylons because so it does not burn or catch on fire with the flames
Hot air balloons need to be large in order to generate enough lift to carry their payload. The volume of hot air inside the balloon determines its buoyancy, so a larger balloon can hold more hot air and lift more weight. Additionally, the size of the balloon helps create a stable and controlled flight path.
Yes, hot air balloons flew first. Though I don't know the exact details, as the history is so diverse, spread over many years, and even includes the candle lit paper hot air balloons released at parties or festivals. It would take some research on the internet to get the full details.
Hot air balloons are filled with hot air from a propane burner in the basket. Hot air rises. So provided the cooling air in the balloon is topped up from short blasts from the burner, the balloon will rise off the ground.
Circles and spheres have the least amount of surface area per volume than any other shape, and so it is a very popular shape for hot-air balloons as less heat is dissipated through the skin of the balloon.That being said, hot-air balloons have been made in many different shapes.
well, hot air balloons are made from nylons because so it does not burn or catch on fire with the flames
Hot air balloons need to be large in order to generate enough lift to carry their payload. The volume of hot air inside the balloon determines its buoyancy, so a larger balloon can hold more hot air and lift more weight. Additionally, the size of the balloon helps create a stable and controlled flight path.
oh yeah! they are so cool! big balloons... fun.. no actually, it sucks
Balloons can be filled with air (don't float), or with hydrogen or helium (float because the gas is less dense). Hot air balloons use burners to heat the air so that it becomes slightly less dense than the cooler air around it, providing some lift.
Because the balloons are so large even a light breeze will blow them sideways.
Hot air balloons have no forward propulsion or steering mechanism. The pilot only has control over the vertical travel of the aircraft. In order to achieve travel in any given direction, the pilot must find an altitude in which the wind is blowing the desired direction. There is a large amount of luck involved in navigating a hot air balloon. Hot air balloons can be extremely difficult to launch and/or land, and doing so safely requires a large team of personnel.
They achieve liftoff by filling up the envelope with hot air, hot air is less dense and so it rises. To lower the hot air balloon, they will pull a string to release the hot air.
Hot air balloons burn fossil fuels to produce the heat they need to fly. Anything which burns fuel must also release some pollutants. So yes, hot air balloons do pollute. But it should be noted that most burn propane which is a very clean fuel.
The hot air inside the balloon is less dense than the cold air outside, so the balloon floats on the denser air. But an airplane relies on a wing moving through the air to create lower pressure on the top of the wing, so that air below pushes the wing up. hot air balloons require no movement.
Helium is the gas usually used now. Hydrogen works, but is inflammable and so dangerous. There are also hot air balloons which require a heater to create the hot air and keep it hot.
Yes, hot air balloons flew first. Though I don't know the exact details, as the history is so diverse, spread over many years, and even includes the candle lit paper hot air balloons released at parties or festivals. It would take some research on the internet to get the full details.
a hot air balloon only works using thermals, which are currents of hot air rising because one area is heated more than the others. so hot air balloons depend on air to keep it airborne, specifically hot air. once it leaves the earths atmosphere, it is a vacuum. there is no air, so the hot air balloon will fall back into the earth. hence, we see that hot air balloons cannot leave the earth's atmosphere.