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http://dx.doi.org/10.5139/JKSAS.2017.45.8.619

Attitude Angle and Drag Coefficient Measurements of Free-Falling Hemisphere Using a Visualization Technique  

Song, Hakyoon (Korea Advanced Institute of Science and Technology)
Lee, Sungmin (Korea Advanced Institute of Science and Technology)
Lee, Jong Kook (Agency for Defense Development)
Park, Gisu (Korea Advanced Institute of Science and Technology)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.45, no.8, 2017 , pp. 619-626 More about this Journal
Abstract
In this work, the effect of attitude angle variation on drag coefficients of hemisphere in a Mach 6 flow has been investigated. Experiments were conducted in a shock tunnel and a free-falling technique was used to minimize flow disturbance by a sting. For attitude and drag coefficient measurements of a free-falling hemisphere, a free-falling technique based on a releasing mechanism with a stair-typed module and an electromagnet was developed. A shadowgraph technique was used for flow visualization using a high-speed camera.
Keywords
Free-Fall; Hemisphere; Shock Tunnel; Drag Coefficient; Attitude Determination;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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