Multiple-searching technology based three-dimensional wave-rider rapid design method

A design method and waverider technology, applied in the field of rapid design of three-dimensional waveriders based on multiple search technology, can solve the problems of reducing design efficiency, time-consuming, and large flow field data, so as to improve tracking efficiency and expand design. The effect of space and stability
CN105069245AActive Publication Date: 2015-11-18CHINA ACAD OF AEROSPACE AERODYNAMICS
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA ACAD OF AEROSPACE AERODYNAMICS
Publication Date
2015-11-18

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Abstract

The present invention discloses a multiple-searching technology based three-dimensional wave-rider rapid design method. The multiple-searching technology based three-dimensional wave-rider rapid design method comprises the following steps of: (1) determining a three-dimensional flow field; (2) determining a shock wave curved surface, and fitting a leading edge curve; and (3) performing streamline tracing by adopting a multiple-searching technology to generate a wave-rider lower surface, and automatically acquiring a wave-rider outline with a given length by performing scaling adjustment on a shock wave outlet shape line at the same time. The multiple-searching technology based three-dimensional wave-rider rapid design method has the following beneficial effects: (1) the condition that the existing design method is limited to a two-dimensional or quasi two-dimensional flow field is broken through, and a shock fitting method is used for accurately computing the three-dimensional flow field and accurately distinguishing the shock wave curved surface; (2) in order to solve the problem of mass data point addressing in a three-dimensional wave-rider design, data are divided into multiple subareas by use of an octree, and the point addressing efficiency strength can be greatly improved by combining a virtual boundary method; and (3) the three-dimensional flow field based on the shock fitting method expands the design space, and is combined with a multiple-searching based streamline tracing method to greatly improve the tracing efficiency and meet rapid design requirements of aircraft layout.
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Description

technical field

[0001] The invention belongs to the technical field of aircraft design, in particular to a rapid design method for a three-dimensional waverider based on multiple search techniques. Background technique

[0002] Hypersonic aircraft is an important weapon system to deal with future wars and break through missile defense systems. It has extremely high-speed long-range strike and defense penetration capabilities, and can achieve "global instant arrival". It has become a popular weapon system that countries around the world are competing to develop and develop. Has extremely important military value. No matter what kind of near-space hypersonic vehicle, high speed, high maneuverability and long range are its main development goals.

[0003] The layout of the waverider stands out from the low-drag shape due to its high lift-to-drag ratio, and has become one of the most widely studied aerodynamic shapes of hypersonic vehicles. Boeing, Nuoenlop, etc. in the United ...

Claims

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