1. Cylinder weight,N Figures 4-5:Optimal relative SPL vs.model weight for unstiffened circumferential 4) and longitudinal5) models. • -Baseline, • -Acoustic with weight <
2. 5 1 0 1 5 2 0 Figures 6- 10:Normalizedstartingandendingdesign
3. 2-1- i i i i r i i i i i i \ i i i i i i i r 1 5 1 0 1 5 2 0
4. 5 1 0 1 5 2 0 2-1-