RT Journal Article ID 5655dee37b7d6ae2 A1 Hessler, R. O. A1 Glick, R. L. A1 Bertele, R. A1 Cedro, D. A1 Fiorentino, G. T1 FREQUENCY RESPONSE OF A MODEL SUBSCALE ROCKET MOTOR JF International Journal of Energetic Materials and Chemical Propulsion JO IJEMCP YR 2002 FD 2002-01-01 VO 5 IS 1-6 SP 889 OP 902 K1 Combustion instability K1 passive diagnostics K1 acoustic response K1 mode shapes AB 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. PB Begell House LK https://www.dl.begellhouse.com/journals/17bbb47e377ce023,76f8e14974df93a8,5655dee37b7d6ae2.html