Infrared Wake Radiation.
DEFENSE RESEARCH CORP SANTA BARBARA CA
Pagination or Media Count:
In pure air at elevated temperatures there are a number of source of infrared radiation e.g., electron scattering. However, unless the temperature is excessively high approx. 5000 K, the only significant source consists of the vibrational transitions of the nitric oxide molecule. Thus, for those portions of the wake of a re-entry vehicle where the temperature is not excessive and ablation of the surface material is not significant, the infrared radiation emitted can be identified with the vibrational bands of NO. In this memorandum a method for calculating the spectral intensity of band radiation is described and results of a calculation of the spectral intensity in the fundamental and first overtone bands of NO for the wakes of two different vehicles are given. Other aspects of infrared wake radiation have been discussed elsewhere.
- Guided Missile Reentry Vehicles
- Optical Detection and Detectors