Vibration Modal Characterization of a Stirling Convertor via Base-Shake Excitation

摘要: ABSTRACT The U.S. Department of Energy (DOE), Lockheed Martin (LM), Stirling Technology Company (STC), and NASA John H. Glenn Research Center (GRC) are currently developing a high-efficiency convertor for use in Radioisotope Generator (SRG). DOE have identified the SRG potential as an advanced power system future Space Science missions, providing spacecraft onboard electric deep space missions unmanned Mars rovers. Low-level, base-shake sine vibration tests were conducted on Demonstration Convertor (TDC), at GRC’s Structural Dynamics Laboratory, February 2001, part development this technology. purpose these was to provide better understanding TDC's internal dynamic response external vibratory base excitations. knowledge obtained can therein be used help explain success that TDC enjoyed its previous random qualification (December 1999). This explanation focuses TDC’s characteristics 50 250 Hz frequency range, which corresponds maximum input levels test specification. structural now been measured two separate under different motoring loading conditions: (1) with being electrically motored, excitation load, (2) turned off, alternator internals undergoing via hammer impact loading. paper addresses setup, procedure results testing motored TDC, will compare those from (May 2001) non-motored TDC. physical construction multi-layered