GASEOUS RADIATION IN HYPERSONIC STAGNATION POINT FLOW.
Abstract
Measurements of gaseous radiation in shock tube flows can be used to predict the radiant heat transfer to an actual re-entry vehicle if the flow is in equilibrium and the actual tempera tures and densities are duplicated. A scheme which enables determination of flow regimes where non-equilibrium effects become important is discussed. Reported also are results of spectral radiation measurements for flow regimes in which equilibrium exists. These measurements cover the spectral range from 3800 A to 6300 A. Experi ments were performed using 3/8 and 3/4-in diam eter hemisphere cylinders. Light radiating from the bow shock region was collected by a light tube extending to the stagnation point of the model. As evidenced by the tests results, this technique yields good reproducibility of data. It constitutes a direct measurement of radiant light flux at the stagnation point, which is not masked by the impurity radiation encountered if measurements are made through a window in the shock tube wall. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 30, 1963
- Accession Number
- AD0418113
Entities
People
- Imants Reba
Organizations
- IIT Research Institute