Research on Reliability Evaluation Method of Aerospace Pyrotechnic Devices Based on Energy Measurement
High reliability is the basic requirement of aerospace pyrotechnic devices. Traditional reliability evaluation methods require a lot of tests, which become too expensive; therefore, the small-sample evaluation method is needed to reduce the cost. Using energy as a performance parameter can better re...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-11-01
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| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/10/22/8200 |
| _version_ | 1797547426192556032 |
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| author | Yubo Zhu Jili Rong Qianqiang Song Zhipei Wu |
| author_facet | Yubo Zhu Jili Rong Qianqiang Song Zhipei Wu |
| author_sort | Yubo Zhu |
| collection | DOAJ |
| description | High reliability is the basic requirement of aerospace pyrotechnic devices. Traditional reliability evaluation methods require a lot of tests, which become too expensive; therefore, the small-sample evaluation method is needed to reduce the cost. Using energy as a performance parameter can better reflect the essence of the function of the pyrotechnic device compared to using force. Firstly, this article assumes that the strength obeys the normal distribution, and the stress is a constant; therefore, the reliability evaluation formula based on the t distribution is proposed. Then, taking the pin puller as the research object, four sets of energy measuring devices were developed so as to obtain its performance parameters. Finally, the evaluation results show that the pin puller has a high reliability of 0.9999999765 with a confidence level of 0.995. The reliability method proposed in this paper is a small-sample method for evaluating aerospace pyrotechnic devices, which can greatly reduce the cost of reliability evaluation. Moreover, the energy measuring devices developed in this paper can provide a new way of measuring performance parameters for piston-type pyrotechnic devices. |
| first_indexed | 2024-03-10T14:43:58Z |
| format | Article |
| id | doaj.art-859880493ea3443cb257072ef04b491a |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T14:43:58Z |
| publishDate | 2020-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-859880493ea3443cb257072ef04b491a2023-11-20T21:32:29ZengMDPI AGApplied Sciences2076-34172020-11-011022820010.3390/app10228200Research on Reliability Evaluation Method of Aerospace Pyrotechnic Devices Based on Energy MeasurementYubo Zhu0Jili Rong1Qianqiang Song2Zhipei Wu3MOE Key Laboratory of Dynamics and Control of Flight Vehicle, School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, ChinaMOE Key Laboratory of Dynamics and Control of Flight Vehicle, School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, ChinaBeijing Institute of Astronautical System Engineering, Beijing 100076, ChinaChina Academy of Launch Vehicle Technology, Beijing 100076, ChinaHigh reliability is the basic requirement of aerospace pyrotechnic devices. Traditional reliability evaluation methods require a lot of tests, which become too expensive; therefore, the small-sample evaluation method is needed to reduce the cost. Using energy as a performance parameter can better reflect the essence of the function of the pyrotechnic device compared to using force. Firstly, this article assumes that the strength obeys the normal distribution, and the stress is a constant; therefore, the reliability evaluation formula based on the t distribution is proposed. Then, taking the pin puller as the research object, four sets of energy measuring devices were developed so as to obtain its performance parameters. Finally, the evaluation results show that the pin puller has a high reliability of 0.9999999765 with a confidence level of 0.995. The reliability method proposed in this paper is a small-sample method for evaluating aerospace pyrotechnic devices, which can greatly reduce the cost of reliability evaluation. Moreover, the energy measuring devices developed in this paper can provide a new way of measuring performance parameters for piston-type pyrotechnic devices.https://www.mdpi.com/2076-3417/10/22/8200reliability evaluationenergy measurementsmall-sample evaluationpyrotechnic devicespin puller |
| spellingShingle | Yubo Zhu Jili Rong Qianqiang Song Zhipei Wu Research on Reliability Evaluation Method of Aerospace Pyrotechnic Devices Based on Energy Measurement Applied Sciences reliability evaluation energy measurement small-sample evaluation pyrotechnic devices pin puller |
| title | Research on Reliability Evaluation Method of Aerospace Pyrotechnic Devices Based on Energy Measurement |
| title_full | Research on Reliability Evaluation Method of Aerospace Pyrotechnic Devices Based on Energy Measurement |
| title_fullStr | Research on Reliability Evaluation Method of Aerospace Pyrotechnic Devices Based on Energy Measurement |
| title_full_unstemmed | Research on Reliability Evaluation Method of Aerospace Pyrotechnic Devices Based on Energy Measurement |
| title_short | Research on Reliability Evaluation Method of Aerospace Pyrotechnic Devices Based on Energy Measurement |
| title_sort | research on reliability evaluation method of aerospace pyrotechnic devices based on energy measurement |
| topic | reliability evaluation energy measurement small-sample evaluation pyrotechnic devices pin puller |
| url | https://www.mdpi.com/2076-3417/10/22/8200 |
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