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Aerodynamic layout design method based on variable-configuration aerospace vehicle

An aerospace vehicle and aerodynamic layout technology, which is applied to aircraft parts, ground devices, transportation and packaging, etc., can solve problems such as great difficulty in engineering realization, to ensure system stability and maneuverability, optimize flight performance, The effect of improving aerodynamic performance

Active Publication Date: 2018-05-04
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
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  • Application Information

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Problems solved by technology

Combining all these features on a fixed-wing aircraft requires meeting all requirements, which will undoubtedly bring great difficulty to engineering realization

Method used

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  • Aerodynamic layout design method based on variable-configuration aerospace vehicle
  • Aerodynamic layout design method based on variable-configuration aerospace vehicle
  • Aerodynamic layout design method based on variable-configuration aerospace vehicle

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Embodiment Construction

[0050] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0051] Such as figure 1 Shown is an aerodynamic layout design method based on a variable configuration aerospace vehicle, including the following steps:

[0052] Step 1: Build a parametric geometric model

[0053] Determine the low-speed reference layout and high-speed reference layout of the variable-configuration aerospace vehicle respectively, and use the state type function method to parametrically describe the geometric shape of the variable-configuration aerospace vehicle; The geometric parameters of its shape features, and determine whether these parameters are completely independent and the constraints between the parameters, obtain a complete geometric parameter set that can describe the aircraft, and then specify the value of the parameter set, and use the component disassembly method to generate a specific aircraft shape.

[0054] As shown ...

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Abstract

The invention discloses an aerodynamic layout design method based on a variable-configuration aerospace vehicle. The aerodynamic layout design method comprises the steps that the low-speed datum layout and the high-speed datum layout of the variable-configuration aerospace vehicle are determined correspondingly; the geometrical shape of the variable-configuration aerospace vehicle is described ina parameterization mode through a state-type function method; a corresponding parameterization kinetic model is established through an engineering estimation method, models of different speed domainsare integrated based on the similarity criterion, and a corresponding agent model is established; the influence of the flight condition and aerodynamic layout change on the performance of a flight control system is determined through a sensitivity analysis method, and the stability boundary and system requirements of the variable-configuration aerospace vehicle are determined; and through full-speed-domain performance matching analysis, a variable-layout scheme of the variable-configuration aerospace vehicle is determined. By properly changing the wing configuration of the aerospace vehicle, it is guaranteed that the aerospace vehicle has the optimal aerodynamic layout at each mission stage, large envelope continuous flight under the minimum energy consumption is achieved, and the need ofintegrated design of the aerospace vehicle is met.

Description

technical field [0001] The invention relates to an aerodynamic layout design method based on a variable-configuration aerospace vehicle, and belongs to the technical field of overall design of aircraft. Background technique [0002] The reusable horizontal take-off and landing flight technology is considered to be a disruptive technology to and from space, and it is the goal that human beings are constantly pursuing. The purpose of traveling to and from space. However, the flight speed of the aircraft passes through the subsonic, transonic, supersonic and hypersonic ranges, and has the characteristics of large flight envelope and complex aerodynamic environment. It is difficult for a single aircraft configuration to meet the complex flight mission requirements. Variable body, by appropriately changing the wing configuration of the aircraft, it can ensure that the aircraft has an optimal aerodynamic layout in each mission stage, thereby reducing the overall harsh requirement...

Claims

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Application Information

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IPC IPC(8): B64F5/00
CPCB64F5/00
Inventor 刘燕斌陈柏屹沈海东陆宇平
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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