Ground Cloud Dispersion Measurements During The Titan IV Mission #K21 (6 November 1995) at Cape Canaveral Air Station.
Abstract
Launch cloud imagery, ground-level HCl measurements, and meteorological data recorded during the 00:15 EST launch of a Titan IV vehicle at Cape Canaveral Air Station (CCAS) on 6 November 1995 (mission #K21) are presented. These data will be used to determine how accurately the Rocket Exhaust Effluent Diffusion Model (REEDM) can predict toxic hazard launch corridors. Infrared imagery showed that the ground cloud stabilized at a height of 1375 m at T + 4 to 5 min. REEDM predicted a stabilization height of 1131 m and a T + 7.7 minute stabilization time based on T - 0.7 hour rawinsonde data. The stabilization height predicted by REEDM is in closer agreement with the value determined by imagery for this launch than for launches #K19 and #K23 where the ground clouds were found to stabilize at heights twice those predicted by REEDM. The imagery data show that the ground cloud rose and spread with minimal east/west transport for the first 10 min following launch. Ground-level HCl measurements made by dosimeters placed on the pad's lightning towers and perimeter fence show that the majority of the ground-level HCl moved northwest and south-southwest of the launch pad, consistent with the imagery data.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 21, 1996
- Accession Number
- ADA316797
Entities
Organizations
- The Aerospace Corporation