Experimental Study of Strength and Existance Domain of Ground-To-Air Inlet Vortices by Ground Board Static Pressure Measurements

摘要

When an air inlet is aspirating in close proximity to the ground an inlet vortex will be established between the ground plane and the inlet under some flow conditions. This vortex could cause problems with foreign object ingestion that might damage the blading of the engine. In this investigation the strength and existence domain of the inlet vortex has been studied in a low speed wind tunnel by measurements of the ground plane time average static pressure below the inlet.