Investigation on Acoustic Properties of Thruster Chamber with Coaxial Injectors and Plenum Chamber

Figure 6

FFT analysis of pressure oscillations at the observation point for the Model B chamber with different injector lengths.

(a) 2.2 cm

(b) 3.2 cm

(c) 4.4 cm

(d) 6.2 cm

(e) 7.8 cm

(f) 10.0 cm