Prediction Method of Disturbance Quantity of Aerodynamic Characteristics of Interstage Separation of Tandem Aircraft

Abstract

The invention relates to the technical field of aircraft, and discloses a method for predicting the interference amount of aerodynamic characteristics of a series aircraft separated between stages. The method includes: using a computational fluid dynamics method to obtain unsteady aerodynamic performance data F1 and six-degree-of-freedom motion data M1 of the aircraft corresponding to different physical separation moments during the separation process of the aircraft and the booster stage; Perform unsteady virtual flight calculation to obtain unsteady aerodynamic performance data F2 at the corresponding physical time; based on unsteady aerodynamic performance data F1 and unsteady aerodynamic performance data F2, determine the aerodynamic characteristic interference data of the inter-stage separation of the aircraft. As a result, the problems of various support interference errors in the ground wind tunnel test and the difficulty of obtaining the interference amount data in the flight test are solved.

Description

technical field [0001] The invention relates to the technical field of aircraft, in particular to a method for predicting the interference amount of aerodynamic characteristics of a series aircraft separated between stages. Background technique [0002] In the aerospace field, the series connection of aircraft / payload and rocket booster / launch vehicle is one of the most widely used forms. For example, my country's Long March series of launch vehicles are widely used in series, and space powers such as Europe, the United States, Russia and other aerospace powers, except for space shuttles, use parallel connection. In addition to the form, the series form is almost used. Such as the Soyuz series launch vehicle, the Saturn V launch vehicle, the Soviet N-1 launch vehicle, the Energy launch vehicle and the Proton launch vehicle and the ESA Ariane launch vehicle. [0003] The amount of disturbance to the aerodynamic performance of the aircraft during the interstage separation proc...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a method for predicting the interference amount of the aerodynamic characteristics of the inter-stage separation of the tandem aircraft, which can solve the problem in the above-mentioned prior art that the interference amount of the inter-stage separation process to the aerodynamic performance of the aircraft cannot be accurately obtained

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