Hypersonic Wind Tunnel Test Techniques
Abstract
This report describes the procedures used in the continuous flow hypersonic tunnels of the AEDC for static stability, pressure, heat transfer, materials/structures, boundary-layer transition, and electromagnetic wave testing. Particular emphasis is placed on heat-transfer techniques because of the importance of defining the thermal environment of hypersonic vehicles. An overview of the materials/structures test methodology used in the development of hypersonic vehicle components is presented. Unfortunately the methodology to predict transition has eluded the aerodynamicist for over three decades, and there are still many unanswered questions. This report briefly touches on the many parameters that affect transition and provides numerous references for those who are interested in specializing in this topic. The methodology of using trip spheres is discussed, and illustrative data are presented. Electromagnetic wave testing represents a relatively new test technique that involves the union of several disciplines: aerothermodynamics, electromagnetics, materials/ structures, and advanced diagnostics. The essence of this new technique deals with the transmission and possible distortion of electromagnetic waves (RF or IR) as they pass through the bow shock, flow field, and electromagnetic (EM) window of a missile flying at hypersonic speeds. Electromagnetic waves, Missile seeker system, Hypersonic vehicles, Boundary layer, Boresight error, Radomes
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1994
- Accession Number
- ADA284057
Entities
People
- R. K. Matthews
- R. W. Rhudy
Organizations
- Arnold Engineering Development Complex