Temperature influences of the recoil characteristics for aluminum honeycomb buffer in the tether-net launcher  

作　　者：Wen-hui Shi Shuai Yue Chun-bo Wu Zhou Liu Zhi Liu Bei-bei Zhao Zhong-hua Du Guang-fa Gao 

机构地区：[1]School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing,210094,China [2]Aerospace System Engineering Shanghai,Shanghai,201109,China [3]Xi'an North Qinghua Electromechancal Co.,LTD,Xi'an,710038,China

出　　处：《Defence Technology（防务技术）》2023年第11期39-54,共16页Defence Technology

基　　金：supported by the National Natural Science Foundation of China(Grant No.52102436);the Fundamental Research Funds for the Central Universities(Grant No.30920021109);Natural Science Foundation of Jiangsu Province(BK20200496);China Postdoctoral Science Foundation(Grant No.2020M681615);the project of Key Laboratory of Impact and Safety Engineering(Ningbo University),Ministry of Education(Grant No.CJ202107);the State Key Laboratory of Mechanics and Control of Mechanical Structures(Nanjing University of Aeronautics and astronautics)(Grant No.MCMS-E-0221Y01)。

摘　　要：Fluctuations in outer space's temperature would affect the spacecraft's regular operation.This paper aims to study the temperature influences of the aluminum honeycomb buffer in the tether-net launcher.Firstly,a buffer structure was designed to attenuate the pyroshock generated by the pyrotechnic device.Secondly,the mechanical properties of aluminum honeycomb at different temperatures were obtained through quasi-static compression experiments.Then,the internal ballistic responses of the launcher were gained by the closed bomb tests and the equivalent classical interior ballistic model.Finally,the recoil performance of the launcher with aluminum honeycomb buffer at different temperatures was studied.It is revealed that the aluminum honeycomb crushing force gradually decreases with the temperature increases.The peak pressure,burning rate coefficient and velocity increase while the peak time decreases with the temperature increase for the interior ballistics.For the launcher recoil responses,the average launch recoil decreases if the aluminum honeycomb doesn't enter the dense stage.The impact acceleration,projectile velocity and displacement increase as the temperature increase.The paper spotlights the temperature's influence on the recoil characteristics of the aluminum honeycomb buffer,which provides a new idea for buffering technology of pyrotechnic devices in a complex space environment.

关 键 词：Tether-net launcher Temperature Aluminum honeycomb buffer Interior ballistic responses Launch recoil characteristics 

分 类 号：TG1[金属学及工艺—金属学]