You have to have at least one. (If you don't have an engine, your are classified as a glider.) The largest planes typically run 4 or 6 jet engines. Most planes have 1,2,3,4 or 6 engines. Very large aircraft sometimes have more. There are propeller planes, turbo prop and jet engines. There are also VTOL Vertical TakeOff and Landing planes, such as the Harrier and Osprey
no. a few variaties do though.
Usaly
Yes, jets are planes but jets are mostly known as supersonic planes.
Smaller planes have piston engines, but bigger planes like the Boeing 717-777 and other planes have turbine engines
the arrival of Allied transport and glider planes
its engines
they used a glider and they kept it in a hangar(special shed for planes).There first glider was made mostly in the Wright Cycle Co..
A Glider or sailplane. Schweitzer has a virtual monopoly on these in the Us at present, there were other makes such as Bowlus in War II and earlier.
Planes powered by internal combustion engines came first.
airplanes and aircraft
The engines propel the airplanes.