Analysis on Vibroacoustic Fatigue Life of Empennage in a Hypersonic Vehicle

Table 3

Noise acceptance test sound pressure level spectrum.

Center frequency (Hz)	Sound pressure level within octave bandwidth (dB)
	Acceptance level	Appraisal level
31.5	146	150
63	150	154
125	153	157
250	154	158
500	155	159
1000	156	160
2000	154	158
4000	150	154