| タイトル | A Study of Viscous Interaction Effects on Hypersonic Waveriders |
| 本文（外部サイト） | http://hdl.handle.net/2060/19920015437 |
| 著者（英） | Chang, Jinhwa |
| 著者所属（英） | Maryland Univ. |
| 発行日 | 1992-03-01 |
| 言語 | eng |
| 内容記述 | The effects of viscous interaction in the analysis and design of improved classes of viscous optimized hypersonic waveriders is examined. The Corda computer program is used to generate viscous optimized hypersonic waveriders from conical flow fields without viscous interaction. Each waverider is optimized for maximum L/D, and comparison studies are made between cases with and without viscous interaction. The results show that aerodynamic performance of the viscous interaction waveriders are reduced due mainly to a large increase in skin-friction drag associated with the viscous interaction phenomena that grows with increasing Mach number and altitude, but some of this performance loss can be recouped by including viscous interactions within the optimization procedure. When the waverider is optimized for viscous interaction, the shape can change dramatically. A significant result of the present work delineates on a velocity-altitude map the region where viscous interaction effects are significant for modern hypersonic waveriders by performing parametric runs to produce L/D, C sub L, and C sub D contour plots for Mach numbers from 6 to 30 at altitudes from 30 to 80 km. |
| NASA分類 | AERODYNAMICS |
| レポートNO | 92N24680
NASA-CR-189587
NAS 1.26:189587
UM-AERO-91-44 |
| 権利 | Copyright, Public use permitted |
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