Helicopter dynamics simulation method based on Unignine

Abstract

A helicopter dynamics simulation method based on Unignine comprises the steps that firstly, each component of a helicopter body is abstracted into a mass point, and the mass centers of all the mass points are calculated and serve as the mass center of a helicopter; and then a helicopter body motion equation, a rotor mathematical model and a tail rotor mathematical model are respectively constructed so as to obtain a dynamic model of the whole helicopter. According to the inherent attribute, the external environment and the current state of the helicopter to stimulate .stress of the helicopter,so that the helicopter can feed back the air environment in time. The attitude characteristics of the helicopter in flowing air are accurately reproduced, and the phenomena of load increase, load decrease, load movement and the like of the helicopter are accurately simulated by adopting a centroid dynamic calculation mode. Helicopter power under different speeds, different models and different environments can be simulated, and the helicopter attitude can be simulated more accurately.

Description

technical field [0001] The invention relates to a helicopter dynamics simulation method under the Unigine environment, belonging to the technical field of data processing. Background technique [0002] Helicopter dynamics simulation is the basis for flight training and handling of helicopter special situations in a virtual environment, and it is also an important part of establishing accurate helicopter flight characteristics. At present, the helicopters in the Unigine environment adopt static models. When the load changes and load movement occurs on the helicopter, the dynamic characteristics of the helicopter cannot be dynamically updated according to the current situation, and the dynamic changes when the above phenomena occur cannot be fed back in time. Moreover, the rotor aerodynamic model, tail rotor aerodynamic model, and fuselage aerodynamic model used are relatively simple, and there are problems such as the helicopter's flight effect is rigid, and the forward and t...

AI Technical Summary

Problems solved by technology

At present, the helicopters in the Unigine environment use static models. When the load changes and load movement of the helicopter occurs, the dynamic characteristics of the helicopter cannot be dynamically updated according to the current situation, and the dynamic changes when the above phenomena occur cannot be fed back in time.

In addition, the rotor aerodynamic model, tail rotor aerodynamic model, and fuselage aerodynamic model used are relatively simple, and there are problems such as the helicopter's flight effect is rigid, and the forward and turning characteristics are quite different from the real helicopter.

As a result, the overall simulation effect is not good, and it is impossible to realistically simulate the flight effect of the helicopter in the real atmosphere, as well as the drag characteristics of different models and speeds, and the attitude characteristics of the helicopter when turning

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