Nonlinear Combustion Instability Data Reduction
نویسندگان
چکیده
A crucial element in the practical solution of combustion instability problems in rocket motor development programs is the accurate interpretation of data secured in pulsed motor stability testing. There presently exist no universally accepted or wellestablished methods for carrying out this type of data analysis. Most investigators apply only linear combustion instability theory; any attempted nonlinear interpretation is then entirely qualitative. Availability of some new high-quality nonlinear experimental data collected in an international collaborative research program presents the opportunity to reexamine the data interpretation methodology currently employed. These data sets contain much information that has not been fully explained, nor have they been subjected to searching scrutiny from the standpoint of nonlinear instability theory. In particular, information of direct value in producing an improved nonlinear instability theory and data reduction procedure is evident in the published material. In this paper, presently accepted nonlinear instability concepts are critically examined from the standpoint of both their correspondence to the observations and their use as diagnostic tools. Suggestions are made for improved experimental techniques and for new directions in the development of practical theoretical models.
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تاریخ انتشار 2003