Method for predicting optimal release point of airdropped material

Abstract

The invention discloses a method for predicting an optimal release point of an airdropped material. The method comprises: performing calculation by regarding a parachute as a three-dimensional 6-degree-of-freedom variable mass body, analyzing a motion characteristic of the airdropped material in a parachute opening and stable descent process according to an actual parachute descent working procedure, establishing a reliable dynamic model of a goods and materials airdropping process, simulating a motion track of the airdropped material after leaving from an aircraft, and calculating a parachute descent trajectory; and calculating and analyzing optimal release point, release time and release angle of the airdropped material with a Monte Carlo method according to a known target release point. With the method, the parachute descent airdropping process is subjected to high-precision dynamic modeling and solving, so that an airdropping point in a specified airdropping condition can be calculated reliably and a theoretical reference is provided for accurately mastering a release opportunity in a parachute descent implementation process to enable goods and materials to land in a predetermined landing site.

Description

Technical field [0001] The invention relates to the technical field of airdrops of materials, in particular to a method for predicting the optimal drop point of airdrops. Background technique [0002] Based on the analysis of the domestic airdrop technology level, my country has basically solved the problem of equipment "can be dropped" during the "Eleventh Five-Year Plan" period. However, due to the low level of research on the working mechanism of the airdrop parachute system, the success rate of airdrops is low. , Airdrops have a large and long assembly time, which is still a problem that cannot be solved by airdrops and equipment airdrops, especially in complex climate and terrain conditions, even unusable. In the process of parachuting of airdropped materials, correct calculation of the delivery point and accurate grasp of the timing of the delivery are an important condition for the materials to land in the scheduled landing field. It is not only related to landing safety, ...

AI Technical Summary

Problems solved by technology

[0002] From the analysis of the level of domestic airborne airdrop technology, my country has basically solved the problem of "lowering" equipment during the "Eleventh Five-Year Plan" period. However, due to the limited research on the working mechanism of the airborne airdrop parachute system, the success rate of airdrops is low. , The airdrop spreads a large area and takes a long time to gather, which is still a problem that cannot be solved by airborne and equipment airdrops, especially in complex climate and terrain conditions, and even cannot be used

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