Information about hot air balloons

1, a hot air balloon is a lighter object than air. The upper part is an atmospheric sphere and the lower part is a hanging basket. Air is heated inside the balloon, and the air density is lower than that of cold air outside, which plays a role in buoyancy and makes the whole body shift; Hanging baskets can carry passengers and heat sources (mostly open flames). Modern sports balloons are usually made of nylon fabric and the opening is made of refractory material.

2, can be used in air sports, photography, tourism, etc. The first manned hot air balloon was made by Montgolfier Brothers, and was launched in Jean-Fran, Paris, France on June1783+065438+1October 2 1. Ois Pilatre de Rozier and Fran? Ois Laurent dArlandes, start with two people. The first hot air balloon flying in the United States was launched from the Walnut Prison in Philadelphia by Jean Pierre Blanchard of Air France on June 5438+0793+1October 9. At present, there are four types: AA, AX, AM and AS.