Blockage corrections for different geometries in enclosed free-jet test section of high altitude test system

The 'High Altitude Test System, HATS' consists of a test chamber that isolates the test article from the outside atmosphere and simulates the high altitude environment. Typically, the test article is installed inside the test chamber through appropriate support systems. This thesis focused on the effects of blockage of the test articles that have different area ratios for determination of the working characteristics of the 'HATS'. Within the framework of the cold flow tests, Schlieren images were recorded with high speed camera and static pressures and temperatures of the test chamber were also be collected. Results from experimental tests and numerical analyses have been compared in terms of both test chamber pressure and Schlieren images.