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原文传递 Experimental Validation of the Dynamic Inertia Measurement Method to Find the Mass Properties of an Iron Bird Test Article.

题名：	Experimental Validation of the Dynamic Inertia Measurement Method to Find the Mass Properties of an Iron Bird Test Article.
作者：	Chin, A. W.; Herrera, C. Y.; Spivey, N. D.; Fladung, W. A.; Cloutier, D.
关键词：	Aerospace vehicles, Inertia, Ground tests, Vibration tests, Moments of inertia, Flight characteristics, Center of gravity, Frequency response, Pendulums, Support systems, Structural analysis
摘要：	The mass properties of an aerospace vehicle are required by multiple disciplines in the analysis and prediction of flight behavior. Pendulum oscillation methods have been developed and employed for almost a century as a means to measure mass properties. However, these oscillation methods are costly, time consuming, and risky. The NASA Armstrong Flight Research Center has been investigating the Dynamic Inertia Measurement, or DIM method as a possible alternative to oscillation methods. The DIM method uses ground test techniques that are already applied to aerospace vehicles when conducting modal surveys. Ground vibration tests would require minimal additional instrumentation and time to apply the DIM method. The DIM method has been validated on smaller test articles, but has not yet been fully proven on large aerospace vehicles.
总页数：	Chin, A. W.; Herrera, C. Y.; Spivey, N. D.; Fladung, W. A.; Cloutier, D.
报告类型：	科技报告