摘要: A study of the design and analysis of winglets for military aircraft has been completed. This study is a continuation of the work reported in AFFDL-TR-76-6. The program consisted of investigating analytically the AFFDL/Boeing wing... 展开 A study of the design and analysis of winglets for military aircraft has been completed. This study is a continuation of the work reported in AFFDL-TR-76-6. The program consisted of investigating analytically the AFFDL/Boeing winglet on the take-off and landing configuration of the KC-135A. Also investigated analytically were th effect of a wing leading-edge device on the performance of the AFFDL/Boeing winglet and the design of a compromise high-speed/low-speed winglet. Two wind tunnel tests were conducted by the NASA-Langley Research Center 8-foot transonic tunnel. A high-speed and low-speed test were conducted to determine the effect of the AFFDL/Boeing winglets on the KC-135A's aerodynamic performance and longitudinal and lateral-direction stability. A preliminary plan for a KC-135A winglet retrofit program was developed and its cost estimated. Based on a 1979 program start, the retrofit costs would be recovered by the start of 1984. 收起