Figure 4-32. Calculation of PWL Criterion, Mode by Using This Data from in Reserve Order (DD From 2302)

Figure 4-31. Estimated Insertion Loss of Woods Shown in Figure 4-30 (DD From 2301)

PWL of engine sources

Power Plant Acoustics - index
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verse order, shows the steps in this calculation.

The PWL criterion for the total power plant noise

This is illustrated in figure 432.

can now be calculated. DD Form 2302, used in re-

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