Flight real-time simulation method and flight real-time simulation system for marine rescue helicopter

Abstract

The invention provides a flight real-time simulation method and a flight real-time simulation system for a marine rescue helicopter. The method comprises the following steps: constructing a computer cluster required by computational fluid dynamics CFD calculation; selecting a simulation environment, establishing a three-dimensional model of the scene building based on the simulation environment, and abstracting the helicopter rotor into a rotor model; using a flight dynamics calculation unit for calculating aerodynamic force borne by a rotor wing and storing the aerodynamic force in a shared memory for being called by a CFD unit; enabling the CFD unit to read the rotor hub position data and aerodynamic force from the shared memory, calculate to obtain coupling flow field data and store thecoupling flow field data in the shared memory for being called by the flight dynamics unit; and performing repeated calculations until landing. According to the invention, a bidirectional coupling method is adopted to simulate the marine flight of the helicopter, the accuracy of analogue simulation is improved, and the real-time performance of analogue simulation can be improved through the CFD and visual distributed simulation subsystem, so that a pilot can perform flight simulation training.

Description

technical field [0001] The invention relates to the technical field of computer simulation, in particular to a real-time flight simulation method and a simulation system of a marine rescue helicopter. Background technique [0002] With the increasing development of my country's helicopter technology, helicopters have become an indispensable tool for carrying out rescue missions in disasters, and maritime rescue missions cannot be ignored either. When a helicopter is landing on a ship at sea or landing on a building such as a drilling platform, due to the high-speed wind and waves on the sea level, as well as the complex vortex formed between the rotor and the ship deck, hangar and obstacles, it is difficult for the helicopter to land, and it is also prone to occur. ACCIDENT. Therefore, it is very necessary to develop a corresponding driving simulator. In order to be able to more accurately simulate the coupled airflow between the helicopter and the building, it is necessar...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, during the simulation, it is impossible to accurately simulate the coupled airflow between the helicopter and the offshore structures, and it is impossible to calculate the forces and pose states of the helicopter rotor, fuselage and other components during the sea flight in real time, and it is impossible to display the flight process of the helicopter in real time

Because the simulation method or system in the prior art is far from the actual helicopter flight process, it is not conducive to the improvement of pilot skills

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