Subscale, Hydrogen-Burning, Airframe-Integrated-Scramjet: Experimental and Theoretical Evaluation of a Water Cooled Strut Airframe-Integrated-Scramjet: Experimental Leading Edge

摘要

A water-cooled leading-edge design for an engine/airframe integrated scramjet model strut leading edge was evaluated. The cooling design employs a copper cooling tube brazed just downstream of the leading edge of a wedge-shaped strut which is constructed of oxygen-free copper. The survival of the strut leading edge during a series of tests at stagnation point heating rates confirms the practicality of the cooling design. A finite difference thermal model of the strut was also proven valid by the reasonable agreement of calculated and measured values of surface temperature and cooling-water heat transfer. (Author)