A Compatibility Measurement and Characterization Method for Aircraft Multibody Separation
A technology of multi-body separation and aircraft, applied in design optimization/simulation, geometric CAD, etc., to achieve the effect of solving a large amount of calculation
Active Publication Date: 2021-12-14
CALCULATION AERODYNAMICS INST CHINA AERODYNAMICS RES & DEV CENT
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[0005] The main purpose of the present invention is to solve the multi-body separation problem of aerospace vehicles based on the limited number of multi-body separation trajectory data obtained by means of numerical simulation. How to quickly identify the main cause and quantify the impact of different factors on the separation trajectory and The problem of safety impact provides means to support the determination of the multi-body separation safety envelope and the design of the separation scheme
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[0039] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.
[0040] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.
[0041] The flow of a measurement and characterization method suitable for aircraft compatibility assessment in this embodiment is as follows: figure 1 As shown, it includes analysis of influencing factors of multi-body separation, design space sampling, analysis of multi-body separation motion trajectory, rapid measurement method based on proxy model, identification of main cause of separation safety based on sensitivity analysis, and multi-fa...
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The invention discloses a measurement and characterization method suitable for aircraft multi-body separation compatibility, which can simultaneously consider the influence of multiple factors in the aircraft multi-body separation process, and the measurement and characterization method of separation compatibility evaluation relies on a proxy model. Realization, based on the limited amount of motion trajectory data of aircraft multi-body separation process obtained by numerical simulation, an analysis method for the whole process from sampling design, sample construction, model establishment, sensitivity research, inverse problem solving and verification is proposed, and the aerospace field has been realized. The rapid measurement of multi-variable impact trends in the analysis of multi-body separation problems, at the same time, the best feasible separation conditions can be obtained according to the attitude requirements of the aircraft after separation, and the multi-body separation compatibility measurement and characterization method proposed by the present invention is used to carry out The safety research of the separation problem can effectively solve the problem of large amount of calculation and long cycle in the study of the influence of multiple factors on the separation of many bodies.
Description
technical field [0001] The invention relates to the technical field of aircraft aerodynamic design, in particular to a measurement and characterization method suitable for evaluating the compatibility of aircraft multi-body separation. Background technique [0002] The problem of multi-body separation compatibility is one of the key technologies that must be solved in the development of various aviation and aerospace vehicles. The main task of multi-body separation compatibility research is to verify the safety of separation between multiple bodies. The separated aircraft has good The flight attitude is completed, and the follow-up flight tasks are completed, so as to determine the multi-body separation safety envelope. [0003] Multi-body separation compatibility issues involve the mutual coupling and interaction of flow, aerodynamics, and motion. It is necessary to accurately obtain the unsteady aerodynamic forces on different separation bodies, so as to accurately evaluat...
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IPC IPC(8): G06F30/15G06F30/28
Inventor 贾洪印陈江涛张培红罗磊李欢崔鹏程龚小权唐静吴晓军邓有奇
Owner CALCULATION AERODYNAMICS INST CHINA AERODYNAMICS RES & DEV CENT