Tupolev 154M noise asesment

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ng experimental data, we determine lining and cell geometry:

For the first harmonic, parameters will be:

Distance between linings 28.5 cm;

Lining length 45 cm;

Lining depth 2.5 cm;

Cell length 2 cm

For the second harmonic, parameters will be the following:

Distance between linings 4.5 cm;

Lining length 5 cm;

Lining depth 2.5 cm;

Cell length 0.4 cm.

Figure 7.4 shows the placement of the lining in engine nacelle.

Figure 7.4 Lining placement in the nacelle.

Реферат опубликован: 28/08/2007