A method for calculate nonlinear load of flying-wing unmanned aerial vehicle

A load calculation and nonlinear technology, applied in the field of flying-wing UAV, can solve the problem that the nonlinear load calculation method of flying-wing UAV is not disclosed.
CN109460596APending Publication Date: 2019-03-12CHENGDU AIRCRAFT INDUSTRY GROUP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHENGDU AIRCRAFT INDUSTRY GROUP
Publication Date
2019-03-12

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Abstract

The invention discloses a non-linear load calculation method of a flying wing unmanned aerial vehicle, which comprises the steps of solving flight attitude parameters. A multi-degree-of-freedom coupling flight dynamics simulation model is adopted for aerodynamic and dynamic flight calculation of the aircraft based on aerodynamic non-linear coefficients in solving the flight attitude parameters, Atthe same time, an objective function is established to optimize the flight attitude parameters which do not meet the requirements by using the optimization algorithm, and the output flight attitude parameters are used as the input of the nonlinear concentrated load calculation. As for that aerodynamic non-linearity characteristic of the whole aircraft of the unmanned aerial vehicle (UAV), the invention adopt a flight dynamics simulation model of multi-degree-of-freedom coupling to solve the flight attitude parameters of three-axis couple non-linearity on the basis of the aerodynamic non-linearity coefficient; Thus, the nonlinear load calculation of flying-wing UAV is realized, which has good practicability.
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Description

technical field

[0001] The invention belongs to the technical field of flying-wing drones, and in particular relates to a nonlinear load calculation method of flying-wing drones. Background technique

[0002] As the basis for the design of aircraft structural strength, flight load determines the flight safety and structural weight of the aircraft and affects the flight performance of the aircraft. Effective and accurate calculation results of flight loads can reduce the structural weight and improve the safety of the aircraft flight structure. Aircraft flight performance and survivability.

[0003] The flight load calculation of conventional layout UAVs generally uses a simplified flight dynamics model with limited degrees of freedom. When calculating the aerodynamic load of components and the whole machine, the aerodynamic derivative incremental linear solution of the rudder surface components or the simple airfoil components are used. Calculation method of the total coeff...

Claims

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