Aerodynamic layout of a canard-swept forward-swept telescoping wing with variable wing area

Abstract

The invention relates to a canard forward-sweep telescoping wing aerodynamic configuration with variable span wing area. The canard forward-sweep telescoping wing aerodynamic configuration comprises a fuselage, canards, wings, and a vertical fin; the wings comprise forward-sweep inner wings and forward-sweep telescopic outer wings having internal connections with the forward-sweep inner wings by a telescoping mechanism; and the telescoping mechanism extends to allow the forward-sweep telescopic outer wings to extend to the outside of the forward-sweep inner wings when the mach number (Ma) of an unmanned aerial vehicle is 0.2, and the telescoping mechanism contracts to allow the forward-sweep telescopic outer wings to contract to the inside of the forward-sweep inner wings when the Ma of the unmanned aerial vehicle is 0.4, wherein the area ratio of the forward-sweep telescopic outer wings to the forward-sweep inner wings is 0.25-0.45. The telescoping wing configuration with variable span wing area adopted in the invention allows the unmanned aerial vehicle to have good aerodynamic performances in scopes of different spatial domains and different speeds and the mobility and the flexibility of the unmanned aerial vehicle to be improved. According to the canard forward-sweep telescoping wing aerodynamic configuration of the invention, when Ma is equal to 0.2 or 0.4, the cruise lift-to-drag ratio of the high aspect ratio aerodynamic configuration is over 20% higher than the cruise lift-to-drag ratio of the low aspect ratio aerodynamic configuration when the unmanned aerial vehicle flies at a low speed, and the cruise lift-to-drag ratio of the low aspect ratio aerodynamic configuration is about 15% higher than the cruise lift-to-drag ratio of the high aspect ratio aerodynamic configuration when the unmanned aerial vehicle flies at a high speed, so the capacities of the cruise flight with the Ma of 0.2 and 0.4 are possessed.

Description

technical field [0001] The invention relates to an aerodynamic layout of an unmanned aerial vehicle, in particular to an aerodynamic layout of a canard-type forward-sweep variable wing area and a telescopic wing, which belongs to the technical field of aerodynamic layout of an unmanned aerial vehicle. Background technique [0002] In recent years, with the rapid development of aviation technology, the design of aircraft is gradually developing in the direction of multi-task and multi-function. The traditional design of fixed-wing aircraft, limited by technology, can only make compromises between different flight mission states. The aircraft can only have good aerodynamic performance in a certain airspace range and a certain speed state range. The aerodynamic performance of the aircraft decreases when flying at the design point. Therefore, the function of a kind of fixed-wing aircraft type is highlighted single, and its maneuverability and flexibility all are greatly restric...

AI Technical Summary

Problems solved by technology

[0003] At present, UAVs mainly adopt fixed-wing aerodynamic layout, which has problems such as inability to take into account high and low speed performance, few combat functions, and poor survivability.

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