Accession Number:

ADA089724

Title:

Further Assessment of Infrared Data From Aircraft and Rocket Probes.

Descriptive Note:

Final rept. 1 Dec 78-31 Oct 79,

Corporate Author:

PHOTOMETRICS INC LEXINGTON MA

Personal Author(s):

Report Date:

1979-11-30

Pagination or Media Count:

134.0

Abstract:

Measurements from an aircraft and rockets of the yield of 2.8-3.1 micrometers-band photons from air irradiated by ionizing particles are evaluated. The night-time column emission in aurora, viewed from below by a sensitive radiometer with less than 1 km field of view, is found to be temporally-spatially correlated with the column energy input to within a few sec and a few km. The equilibrium chemiluminous efficiency in the SWIR band, measured with lower-resolution instruments in several hr of flight, shows statistically-significant variations of about a factor two data from 1976 missions, reported in HAES 79, lie in a narrower range. Its mean value is very near that expected from laboratory and HAES rocket measurements. Altitude profiles of the SWIR photon yield from two DNAAFGL rockets have a pronounced minimum near 110 km altitude, qualitatively similar to that predicted by models of collisional quenching of vibrationally-excited nitric oxide molecules by oxygen atoms. Preliminary results of the aircrafts photometric including airglow-sensitive video and radiometric measurements on the ionospheric plasma depleton produced by release of H2 and H20 from an Atlas Centaur rocket engine are presented.

Subject Categories:

  • Atmospheric Physics
  • Test Facilities, Equipment and Methods
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE