The fuselage is the main body of the aircraft, which connects all the parts of the aircraft together, and many other large parts are also connected to the fuselage. The fuselage is generally as streamlined as possible to reduce drag. The design of the fuselage varies widely. The fuselage accommodates the cockpit where pilots and crew sit, and provides space for passengers and cargo. It can also carry all kinds of weapons. Some aircraft fuselage carries fuel; Others carry fuel on the wings. In addition, the engine can be accommodated in the fuselage.