Research And Application Of Life Saving Equipment Release For A Special Aircraft

One important task for helicopters or freighters is to carry rescue mission on the sea.The saving system as a significant way to rescue plane usually includes a lifesaving station,a locator and a air-drop lifesaving equipment.After receiving rescue information,the plane first locates the target,and then drops the rescue equipment.The opportunity and accurate dropping of lifesaving equipment are th e key indicators that matters the success of rescue mission.Based on a civil aircraft project from AVIC,this paper studies the problem of automatic and accurate release of lifeboat from the air,sets up relevant algorithm models and makes the application.First,study and propose a real-time calculation method of dropping trajectory of lifeboat,in this paper,the lifeboat is analyzed in detail from being pushed out of the cabin to dropping into the water,including its automatic inflating process and motion,combined with the lifeboat inflating process,this paper establishes a theoretical mathematics model for every phase of dropping and a four times fitting trajectory model based on multiple stepwise regression,which lays a foundation for the realization of the airborne real-time automatic dropping calculating.Second,study and establish a model for dropping a lifeboat and targeting its dropping point automatically and accurately,This paper defines the relative coordinate system and builds up a theoretical and simplified model to calculate the targeting process while dropping,based on continuous airdropping aiming principle and the trajectory calculation model.Follow,sets up overall design of the relevant interface and operation process of dropping,based on the structure of a special aircraft task system,this paper carries out the analysis of the relevant requirements of dropping,and proposes the overall design scheme of the interfaces and operation process.Last,sets up simulation and test of life saving dropping,this paper mainly introduces the precision calculation,precision simulation software and precision calculation results for the development of a special aircraft launching system.At the same time,it explains the system ground test and flight test verification.