THERMAL RADIATION OF HIGH-TEMPERATURE COMBUSTION PRODUCTS.
Final technical rept. 1 Jan 65-29 Jul 66,
BELL AEROSYSTEMS CO BUFFALO N Y
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An experimental program was initiated in an effort to amplify the scarce existing information concerning those physical properties of gases which determine their thermal radiation at high temperatures and elevated pressures. Well-known methods of quantitative spectroscopy were used for this purpose. Experimental methods were developed for producing the test gas in a certain zone in a flame burning in an inert gas, the pressure of which would be varied within certain limits. The experimental technique was developed at atmospheric pressure in order to keep to a minimum the experimental difficulties. A water cooled multihole burner with a radiating path length of 11 cm was developed. The burner, when fed by premixed oxygen and acetylene at the proper mixture ratio and surrounded by a high velocity shield of nitrogen gas, contained a test zone where CO was the only radiating component of the 3100K combustion products. The evaluation of the radiation measurements conducted on the test zone showed that successful techniques were developed for producing and isolating from the surrounding environment a uniform high temperature test gas. A thorough analysis was conducted concerning the reliability of the approximate measurements of the radiative properties of gases that must necessarily be obtained from a real spectrometer of limited sensitivity and resolution. Author
- Atomic and Molecular Physics and Spectroscopy
- Combustion and Ignition
- Liquid Rocket Propellants