국문요약 1. Introduction 2. Background 2.1 Shock Structure and Loss Mechanisms 2.2 Effect of Incidence 3. Experimental Methods 3.1 Wind Tunnel Facility 3.2 Test Section 3.3 The Nozzle Studied 4. Data Acquisition and Data Reduction 5. Uncertainty Analysis 6. Shadowgraph and Color Oil Flow Visualization 7. Results and Discussion 8. Conclusions References