2. A fixed-wing aircraft refers to an aircraft with wings and one or more engines. It is driven by its own power, and its density in the atmosphere can exceed that of air. If the density of an airplane is less than air, it is a balloon or an airship. If there is no power device and you can only glide in the air, it is called a glider. If the wings of an airplane are not fixed, a helicopter or rotorcraft generates lift by rotating the wings. The fixed-wing aircraft is the most common type of aircraft. The power source includes piston engine, turboprop engine, turbofan engine or rocket engine.
For more information, can I take the glass incubator on the plane? Go to:/ask/0e32a41616112168.html? Zd view more content