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首页> 外文会议>New Developments in Optomechanics; Proceedings of SPIE-The International Society for Optical Engineering; vol.6665 >Design and Test of an Airborne IR Countermeasures Hyper-Hemispherical Silicon Dome
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Design and Test of an Airborne IR Countermeasures Hyper-Hemispherical Silicon Dome

机译：机载红外对策超半球形硅穹顶的设计与测试

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摘要

A 6.5 inch diameter hyper-hemispherical silicon dome was developed on IRAD for an infrared countermeasures aircraft self-protection system. Having passed operational level environmental testing and many hours of flight performance, a prototype dome was subjected to MIL test requirements in simulated crash safety testing at the manufacturer's facility. Although the dome cracked during shock testing, it remained intact preserving aircraft integrity and actually passing safety requirements. This paper describes design requirements, stress analyses of the dome and its mounting, and test results including a forensic cause of failure study of the dome. The results add insight to the margins of safety normally applied to the stress analyses of brittle optical materials and examine actual cause of failure in the prototype part.
机译：在IRAD上开发了一个6.5英寸直径的超半球形硅穹顶，用于红外对策飞机的自我保护系统。通过了运营级别的环境测试和许多小时的飞行性能后，圆顶穹顶在制造商的工厂进行的模拟碰撞安全测试中经受了MIL测试要求。尽管圆顶在冲击测试中破裂，但它仍然完好无损，可以保持飞机的完整性并通过安全要求。本文介绍了设计要求，穹顶及其安装的应力分析以及测试结果，包括对穹顶进行故障研究的法医原因。结果为通常用于脆性光学材料应力分析的安全裕度提供了见识，并检查了原型零件中的实际故障原因。

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