STUDY OF INFRARED EMISSION IN HEATED AIR
Abstract
A study of the infrared emission in heated air s sumarized. The experimental apparatus for quantitative measurement of the radiated infrared energy is descri ed. The design, calibration and testing of the shock tube and a ultichannel infrared spectrometer are presented. Preliminary measurements of the radiation from nitrogen in the wavelength range from 0.95 to 1.10 microns are reported. These results clearly show the strong (0,0) and (2,2) bandheads of the nitrogen 1st positive system. Measurements of the dependence of the radiation intensity on temperature over the range studied (5700 - 7000 K) are in good agreement with predctions for this and system based on the equilibrium populions of the upper energy levels from which the transitions occur. A genel analysis of the nonequilibrium flow around re-entry vehicles is presented which consides finite-rate kinetics and includes the coupling of vibration and dissociation in the gas. The numerical techniques to be employed in the solution of the equations are discussed. (AUTHOR)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1960
- Accession Number
- AD0275881
Entities
People
- Paul V. Marrone
- Walter H. Wurster
Organizations
- Calspan