Design and Performance Study ofa Reusable Low-Impact Motor-Driven Separation Device
Affiliation:
1.Shaanxi Appl;2.ied Physics and Chemistry Reasearch Institute,Xi’an,710061
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摘要:针对航天器以及高端武器装备对高可靠性、可重复使用低冲击分离机构的不断需求,本文设计了一种基于电机驱动可重复使用的低冲击分离装置,通过试验研究了其分离过程中的冲击响应特性以及与火工驱动分离装置的性能参数进行了对比,试验结果表明：电机驱动分离装置在解锁分离过程中,随着载荷的重量不断增加,加速度最大响应增加,其解锁分离时间越长；随着电机转速不断提升,加速度最大响应也不断增加,其发生最大加速度响应的频率在降低,但是相对于不同重量载荷时解锁分离过程中的冲击响应变化幅度较小；电机驱动分离装置将解锁分离过程中的冲击响应最大加速度控制在900g以内,可实现航天器的分离,相对于火工驱动分离装置解锁分离时间增长了61ms,其加速度最大响应比火工驱动分离装置降低了2574.8g,降幅达76.3%,并且可重复使用,为未来可重复使用航天分离装置的技术发展提供了技术支撑。
Abstract:In response to the increasing demand for high-reliability, reusable low-impact separation mechanisms in spacecraft and high-end weaponry and equipment, this paper designs a reusable low-impact separation device based on motor drive. Through experiments, this paper studies the impact response characteristics during its separation process and compares its performance parameters with those of pyrotechnic-driven separation devices. The test results show that: during the unlocking and separation process of the motor-driven separation device, as the load weight increases, the maximum acceleration response increases and the unlocking and separation time becomes longer; as the motor speed increases, the maximum acceleration response also increases, while the frequency of maximum acceleration response occurrence decreases—but the variation range of impact response during the unlocking and separation process is smaller for loads of different weights; the motor-driven separation device controls the maximum acceleration of impact response within 900g during the unlocking and separation process, which can realize the separation of spacecraft. Compared with the pyrotechnic-driven separation device, its unlocking and separation time increases by 61ms, and its maximum acceleration response decreases by 2574.8g (with a reduction rate of 76.3%). In addition, it is reusable, providing technical support for the future technological development of reusable aerospace separation devices.
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