Variable power vertical short-distance takeoff landing aircraft with fixed wings

The invention provides a variable power vertical short-distance takeoff landing aircraft with fixed wings. Engines are installed at the lower front portions and in the middles or at the upper rear portions of the wings, the engines are movably connected by single supports or dual supports and gear bearing groups, acting angles of the engines are changed, the gear bearing groups can be used by a small airplane, acting directions of engines of a large airplane can be changed through hydraulic devices, a horizontal beam shaft is connected with the gear bearing groups when the engines are installed in the middles of the wings, and the acting angles of the engines can be changed through the two ways. The variable power engines installed on two sides of the front portion and two sides of the rear portion of an airplane body are connected through the horizontal beam shaft and a vertical pressure fluted disk. The gear bearing groups drive pressure fluted disk driven teeth so as to change the acting directions of the engines, and various actions are completed.