Diffuser action-aircraft maintance, Other Engineering

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Diffuser action:

The flare, which increases the area of the duct, is known as a diffuser and its shape determines the rate of compression and the amount by which the air is compressed. For best results, the airflow must remain smooth and, because of this, a most important design feature is the angle of divergence. When air is compressed by this process it is called subsonic diffusion and it is a principle that is used extensively in jet engine design.

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