The invention provides a rapid prediction method for a supersonic rotation dynamic derivative of an aircraft. The method comprises the following steps: firstly, solving a steady state aerodynamic torque coefficient Cm0 of the aircraft under a given working condition; secondly, obtaining a corresponding aerodynamic moment coefficient Cm of the aircraft at the additional rotating speed q under the same working condition through quasi-steady calculation, and further obtaining the disturbance quantity of the aerodynamic moment; and finally, directly obtaining the rotation dynamic derivative based on the definition # imgabs0 # of the rotation dynamic derivative. According to the method, the rotating dynamic derivative of the supersonic aircraft can be obtained on the basis that only quasi-steady solution is carried out, multiple times of unsteady forced vibration calculation in the design process are avoided, meanwhile, high prediction precision is achieved, and technical support can be provided for rapid evaluation of the ultrasonic dynamic derivative of the aircraft.
本发明提供了一种飞行器超声速旋转动导数的快速预测方法,首先求解飞行器给定工况下定常状态气动力矩系数Cm0;其次通过准定常计算获得飞行器相同工况附加旋转速度q时相应的气动力矩系数Cm,进而获得气动力矩的扰动量;最后基于旋转动导数的定义#imgabs0#直接获得旋转动导数。本发明方法可在仅进行准定常求解的基础上获得超声速飞行器旋转动导数,避免了设计过程中多次非定常强迫振动计算,同时具有较高的预测精度,可为飞行器超声速动导数快速评估提供技术支撑。
Rapid prediction method for supersonic rotation dynamic derivative of aircraft
一种飞行器超声速旋转动导数的快速预测方法
25.04.2025
Patent
Elektronische Ressource
Chinesisch
IPC: | G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen / G06Q Datenverarbeitungssysteme oder -verfahren, besonders angepasst an verwaltungstechnische, geschäftliche, finanzielle oder betriebswirtschaftliche Zwecke, sowie an geschäftsbezogene Überwachungs- oder Voraussagezwecke , DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES / B64F GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT , Boden- oder Flugzeugträgerdeckeinrichtungen besonders ausgebildet für die Verwendung in Verbindung mit Luftfahrzeugen / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung |
Europäisches Patentamt | 2019
|Europäisches Patentamt | 2021
|Europäisches Patentamt | 2021
|