TEST ARTICLE 

PLACEMENT

To reduce live fire test and evaluation costs subcomponent testing is typically performed. Critical to fire testing is the need to ensure a proper airflow.

This was initiated by 1st measuring the velocity field exiting the high speed air supply duct. Based on these results the boundary condition was modified and computational mesh of consisting of 275,000 elements was configured.

Since live fire testing is performed at full scale and the sources for external air flow are limited there is a need to properly place the component under test to obtain the desired flow conditions. 

To ensure proper test article placement, ESI computed the flow field around a generic wing. 

Initial solutions indicated that the velocity field around the airfoil was biased off the duct centerline.

Offsetting this generic wing   a significant distance enabled an approximately uniform flow field to be attained.

Two cases are presented to demonstrate the placement effect. 

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