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Attenuation of the Cassini Spacecraft Acoustic Environment

机译：卡西尼号航天器声环境的衰减

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Lockheed Martin Astronautics recently conducted a comprehensive set of acoustic tests to support NASA's Cassini program. The primary goal was to evaluate the performance of two new payload fairing acoustic blanket designs under full-scale test conditions. Secondary goals included evaluating the effect of partial blanket coverage, mapping the acoustic levels within the payload fairing and determining the vibro-acoustic response of the fairing. This article will focus on the performance of the acoustic blankets, the effect of partial blanket coverage on the acoustic levels within the payload fairing and the analytical prediction model. A model has been developed to predict acoustic levels within the payload fairing, with the goal of providing accurate acoustic predictions to the pay-load user. Additionally, this article will discuss the difference between chamber test data and acoustic data acquired during launch of a Titan Ⅳ launch vehicle.
机译：洛克希德·马丁宇航公司最近进行了一套全面的声学测试，以支持NASA的卡西尼计划。主要目标是评估两种新的有效载荷整流罩隔音毯设计在全尺寸测试条件下的性能。次要目标包括评估部分毯子覆盖的效果，绘制有效载荷整流罩内的声级并确定整流罩的振动声响应。本文将重点介绍声学毯的性能，部分毯覆盖对有效载荷整流罩内声学水平的影响以及分析预测模型。已经开发了一种模型来预测有效载荷整流罩内的声学水平，目的是为有效载荷用户提供准确的声学预测。此外，本文还将讨论在TitanⅣ运载火箭发射过程中获得的舱室测试数据与声学数据之间的区别。

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