"Heavier than air" refers to airplanes.
air is heavier than balloon, air rises
Warm air is heavier than cold air so it rises up.
The balloon contains air andthe products of combustion of propane, namely carbon dioxide, which is heavier than air, and steam, which is much lighter than air.
They flew their first heavier-than-air powered airplane.
A hot air balloon is inflated with air and then heated by a propane fueled burner. The balloon contains air andthe products of combustion of propane, namely carbon dioxide, which is heavier than air, and steam, which is much lighter than air.
An airplane is a heavier than air flying craft
An airplane is a heavier than air flying craft
making the first airplane and succesfully flying it
There are two types of air-craft: Heavier-than-air and lighter-than-air. Lighter-than-air craft are things like zepplins and balloons that, due to the gas inside actually weigh less than air, and so float upwards. Heavier-than-air craft are basically everything else. Airplanes and the like are not able to float on air and require some sort of thrust and lift system to get them airborn.
Answer is AVIATE
Any object, provided it is aerodynamic in its design, may be rendered airborne, providing it can generate the needed lift and thrust.
Glider
An aerodyne is a heavier-than-air craft, deriving its lift from motion.
There are "lighter-than-air" craft which are known as blimps or balloons, "heavier-than-air" craft which are divided into fixed-wing (airplanes) and rotary wings (helicopters).
The first true air transport company of the heavier than air craft was Boeing. It began service in 1920.
An aviette is a heavier-than-air flying machine in which the motive power is furnished solely by the aviator.
"Lighter than air" aircraft are lighter than air! The most common are blimps. They do not rely on wings to generate lift. They contain a lighter than air gas (ex:helium) that lifts the craft into the air when ties to the ground are released. "Heavier than air" aircraft are the opposite. They rely on wings to generate lift to get into the air. Common heavier than air aircraft are general airplanes you see in the sky everyday.