Laser energy deposition in Edney IV interaction
Hypersonic vehicles are subject to intense local aerothermodynamic loading associated with specific local flow phenomena. An example is the well-known Edney IV interaction which can result in peak heat transfer rates which are orders of magnitude above the already high stagnation point heat transfer. Failure to alleviate or control such local aerothermodynamic loading can leading to serious degradation of vehicle aerodynamic integrity and performance, and even to catastrophic failure. In this paper, we explore the capability of pulsed laser energy deposition to favorably modify the shock structure associated with an Edney IV interaction generated by the intersection of an oblique shock with the blunt body shock associated with a sphere at Mach 3.45. Surface pressure measurements indicate a signicant modification of the surface pressure during the interaction including substantial reduction in peak surface pressure.
KeywordsSurface Pressure Blast Wave Surface Heat Transfer Shock Structure Oblique Shock
Unable to display preview. Download preview PDF.
- 1.R. Adelgren: Localized Flow Control with Energy Deposition. PhD Thesis, Department of Mechanical and Aerospace Engineering, Rutgers University, New Brunswick, NJ (2002)Google Scholar
- 2.R. Adelgren, H. Yan, G. Elliott, D. Knight, T. Beutner, A. Zheltovodov, M. Ivanov: Localized flow control by laser energy deposition applied to Edney IV shock impingement and intersecting shocks. AIAA Paper 2003-0031 (2003)Google Scholar
- 3.B. Edney: Anomalous heat transfer and pressure distributions on blunt bodies at hypersonic speeds in the presence of an impinging shock. The Aeronautical Research Institute of Sweden, FAA Report 115 (1968)Google Scholar
- 4.R. Jenkins: Hypersonics before the shuttle, a concise history of the X-15 research airplane. Monographs in Aerospace History, No. 18, NASA Publication SP-2000-4518 (2000)Google Scholar
- 6.Y. Raizer: Laser Induced Discharge Phenomena. (Consultants Bureau, New York, 1977)Google Scholar