%0 Journal Article %A Hessler, R. O. %A Glick, R. L. %A Bertele, R. %A Cedro, D. %A Fiorentino, G. %D 2002 %I Begell House %K Combustion instability, passive diagnostics, acoustic response, mode shapes %N 1-6 %P 889-902 %R 10.1615/IntJEnergeticMaterialsChemProp.v5.i1-6.910 %T FREQUENCY RESPONSE OF A MODEL SUBSCALE ROCKET MOTOR %U https://www.dl.begellhouse.com/journals/17bbb47e377ce023,76f8e14974df93a8,5655dee37b7d6ae2.html %V 5 %X Burg's Method is applied in a passive linear stability measurement (PLSM) procedure to extract estimates of acoustic mode frequencies, stability parameters α, and mode shapes from multiple measurements of low-level pseudorandom oscillations in a model subscale rocket motor chamber. Radial variations of mode shapes suggest inadequacy of 1D analysis for even relatively small variations of chamber cross-sectional area. %8 2002-01-01