There are many ways the F-15 airplane and the F-16 airplane can take off and land. The F-16 and the F-15 both need a runway upon which they can accelerate and lift off. The F-15 and the F-16 were not designed for vertical take-offs or for take-offs from aircraft carriers, and therefore they lift off in a horizontal position.
In order for an aircraft to take off it must overcome gravity; therefore, it requires lift. Lift is a factor of speed and wing design. Wing design involves the curve of the top of the wing and a flat bottom. The air moving under an airplane wing travels a shorter distance and is slower than the air traveling over the top of an airplanes wing. The faster moving air on top of the wing creates a lower pressure on top of the wing than the slower moving air under the wing. As the forward speed increases, these differences in pressure increase, and the aircraft is able to take off. The heavier an aircraft is, the more lift it needs for it to take off. Warplanes such as the F-15 and the F-16, are made to carry both armament and weapons, and this equipment is heavy. They also need to be fast and maneuverable in order to avoid being shot down. In order to be able to carry adequate weapons and armor at a reasonable speed, the F-15 and the F-16 both have a large engine to support all the extra weight. At this time, the F-15 and the F-16 still remain the best fighter aircraft available today.
Taking off is one of the most difficult things for a warplane to do. When the F-15 and the F-16 are headed into combat they are very heavy, because they carry full fuel tanks and armament at the time of take-off. For this reason, both planes need a long runway and a powerful engine to create enough speed to generate enough lift for the planes to overcome the pull of gravity. All of the latest technology has been used in both the F-15 and the F-16 aircraft, and they are made as light as possible, yet they are very strong and powerful.