Investigation of a Low-Drag Gun Port in the NACA Two-Dimensional Low-Turbulence Tunnel

[摘要] Tests were made in the NACA two-dimensional low-turbulence tunnel of three gun ports with a height of approximately 4 percent of the chord faired into an NACA 66,2-213 low-drag-airfoil section by bulging the section at the gun port. Gun ports faired in this manner had practically no effect on the maximum lift and the critical compressibility speed of the section and showed only small increase in the drag in the range of lift coefficients for high-speed and cruising-flight conditions.

[发布日期] 1942-09-01

[学科分类] 航空航天科学