Wave Drag Reduction with Acting Spike Induced by Laser-Pulse Energy Depositions

被引：38

作者：

Kim, Jae-Hyung ^{[1
]}

Matsuda, Atsushi

Sakai, Takeharu ^{[1
]}

Sasoh, Akihiro ^{[1
]}

机构：

[1] Nagoya Univ, Dept Aerosp Engn, Chikusa Ku, Nagoya, Aichi 4688502, Japan

来源：

AIAA JOURNAL | 2011年 / 49卷 / 09期

关键词：

SUPERSONIC-FLOW; BLUNT-BODY;

D O I：

10.2514/1.J051145

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

The wave drag reduction with acting spike induced by laser-pulse energy depositions was investigated. A time-averaged drag force is measured by the force-balance system using a load cell. Its drag resolution is 15mN and response time is better than 90ms. Laser pulses are irradiated through the BK-7 side window so that they do not suffer optical interference with the shock layer. The beam is reflected against three 45 deg mirrors, and then focused with a convex lens with a focal length of 60mm set right before the BK-7 side window. It was observed that drag reduction scales with a laser-pulse repetition frequency even with the strong pulse-to-pulse interactions.

引用

页码：2076 / 2078

页数：3

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