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Waverider designing method based on reference flow field of revolution body of cuspidal Von Karman curve

A technology of curve turning and design method, which is applied in the direction of affecting the air flow flowing through the surface of the aircraft, supersonic aircraft, transportation and packaging, etc., and can solve the problem of the characteristic reduction of the lift-to-drag ratio of the cone-guided waverider and the difficulty of taking into account the lift-to-drag ratio at the same time Issues such as specificity and volumetric properties

Active Publication Date: 2014-12-10
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

If the volume of the cone-guiding waverider is increased by increasing the cone half-vertex angle 2, the lift-to-drag ratio of the cone-guiding waverider will be reduced. Therefore, the biggest defect of the cone-guiding waverider design method is that it is difficult to simultaneously Taking into account the lift-to-drag ratio and volume characteristics

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  • Waverider designing method based on reference flow field of revolution body of cuspidal Von Karman curve
  • Waverider designing method based on reference flow field of revolution body of cuspidal Von Karman curve
  • Waverider designing method based on reference flow field of revolution body of cuspidal Von Karman curve

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Embodiment Construction

[0023] The present invention provides a design method of a waverider based on the reference flow field of a body of revolution around a pointed Von Karman curve, including the following steps:

[0024] Step S1, modifying the bus bar of the von Karman curve of revolution into a pointed Von Karman curve of revolution bus bar, and designing the pointed von Karman curve of revolution.

[0025] like Figure 4 As shown, the curves 29-30 are the generatrices 31 of the von Karman curves of revolution, given the length 33 and bottom radius 34 of the von Karman curves of revolutions, the shape of the bus 31 of the von Karman curves of revolutions can be uniquely determined by using formula (1) , that is, the coordinate value of the generatrix of the Von Karman curve on the axial coordinate axis X and the coordinate value on the radial coordinate axis Y of the cylindrical coordinate system, where the axial coordinate axis X of the cylindrical coordinate system is the pointed von Karman ...

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Abstract

The invention discloses a waverider designing method based on a reference flow field of a revolution body of a cuspidal Von Karman curve. The method includes: patching a generatrix of a revolution body of a Von Karman curve to a generatrix of the revolution body of the cuspidal Von Karman curve; designing the revolution body of the cuspidal Von Karman curve; solving a supersonic-velocity axisymmetric reference flow field of the zero-incidence cuspidal Von Karman curve revolution body; performing streamline tracing in the supersonic-velocity axisymmetric reference flow field; and generating a waverider aerodynamic configuration. By adoption of the technical scheme of the method, the volume and the lift-drag ratio of a waverider are increased.

Description

technical field [0001] The invention relates to the technical field of aerodynamic shape design of a hypersonic vehicle, in particular to a waverider design method based on a reference flow field of a body of revolution around a pointed Von Karman curve. Background technique [0002] Hypersonic aircraft refers to an aircraft with a flight Mach number greater than 5, powered by an air-breathing engine or its combination engine, and capable of long-distance flight in the atmosphere. Its application forms include hypersonic cruise missiles, hypersonic manned / unmanned aircraft and Aerospace planes and other aircraft. In order to pursue good cruise and strike performance, a hypersonic vehicle must have a high lift-to-drag ratio and a large available space, and the large available space is used to increase the proportion of the payload in the total volume. [0003] The aerodynamic shape of hypersonic vehicles mainly includes three types: axisymmetric configuration, lift body conf...

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Application Information

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IPC IPC(8): B64C21/00B64C30/00B64F5/00
Inventor 丁峰沈赤兵柳军黄伟刘珍李开
Owner NAT UNIV OF DEFENSE TECH
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