Aerostat туралы слайд,презентация
A balloon is an aircraft easier than air, using for flight the carrying capacity of the gas celled in a shell with a closeness less, than surrounding air density
gas - шарльеры,
thermal - монгольфьеры,
combined (gas and thermal simultaneously) - розьеры.
No one is seriously did not believe it . Churchmen , learning about the venture brothers spat and were baptized. Others said that they were crazy . Where the birds fly , not a place of creation of human hands .