Aerodynamic layout of a high-altitude long-endurance aircraft with twin fuselages, high rear wings and three surfaces

Abstract

The invention discloses a high-altitude long-endurance aircraft aerodynamic layout using twin fuselages, a high rear wing and three surfaces. The high-altitude long-endurance aircraft aerodynamic layout using the twin fuselages, the high rear wing and the three surfaces adopts the twin fuselages, a front wing, a rear wing, a double-support tail, a horizontal tail and a turbofan engine; the front wing and the rear wing have a difference between the dihedral angle and the cathedral angle so that an adverse inductive effect of a front wing tip vortex on the aerodynamic performance of the rear wing is effectively improved. The rear wing is supported by the double-support tail to be beneficial for improving the integral aerodynamic performance of a twin-surface layout; and the rear wing adopts larger span so that the adverse downwash induction effect of the front wing on the rear wing can be weakened. Meanwhile, a layout in which an the front wing and the rear wing layout have unequal spans is adopted; and as the span of the front wing is short and the span of the rear wing is long, the aerodynamic characteristic of the rear wing is improved. As the horizontal tail and the engine are mounted at the rear edges of the twin fuselages, the aerodynamic characteristic of the rear wing is further improved by using favorable interference of the horizontal tail to the rear wing.

Description

technical field [0001] The invention belongs to the field of aircraft aerodynamic layout design, in particular to an aerodynamic layout of a high-altitude long-endurance aircraft that adopts twin fuselages, high rear wings and three airfoils. Background technique [0002] High-altitude and long-endurance aircraft are generally used to perform strategic / campaign reconnaissance missions. They have persistent intelligence collection and reconnaissance and surveillance capabilities, and can be used as unmanned combat platforms. Therefore, they have become the focus of weapons and equipment development in various countries today. In order to make better use of the platform advantages of high-altitude and long-endurance aircraft in terms of strategic reconnaissance and intelligence collection, the flying height and flight time of such aircraft are constantly increasing, which requires such aircraft to be capable of carrying large loads to achieve high-altitude High-speed, long-las...

AI Technical Summary

Problems solved by technology

The layout consists of two wings, the rear wing favorably interferes with the front wing, whereas the front wing interferes negatively with the rear wing

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