Accession Number : ADP004482

Title :   Improved Atmospheric Dispersion Models for Space Shuttle Launches at Vandenberg AFB,

Corporate Author : CRAMER (H E) CO INC SALT LAKE CITY UT

Personal Author(s) : Cramer,H. E. ; Rafferty,J. E. ; Naugle,D. F.

Report Date : AUG 1984

Pagination or Media Count : 9

Abstract : To assist in evaluating the environmental effects of material injected into the lower atmosphere during launches of the Space Transportation System (STS) at Vandenberg (VAFB), the U. S. Air Force (USAF) is implementing an improved and modified version of the REEDM computer code currently used to support STS launches at Kennedy Space Center (KSC). This paper describes the basic features of the REEDM program and outlines in detail the modifications and improvements being made to adapt this program for STS launches at VAFB. The modifications/improvements include a new model for predicting the fallout and surface deposition of acidic particles for use at both KSC and VAFB; development of turbulent dispersion coefficients appropriate for VAFB; incorporation of a mesoscale wind-field model for calculating the effects of the complex terrain at VAFB on the trajectories and dispersion of the STS exhaust clouds. An additional important task is the performance of an extensive environmental risk assessment for VAFB using VAFB rawinsonde data with the modified REEDM computer program.

Descriptors :   *COMPUTER PROGRAMS, *MATHEMATICAL MODELS, *ENVIRONMENTAL IMPACT, *ROCKET EXHAUST, SPACE SHUTTLES, LAUNCHING, SPACECRAFT DEBRIS, DISPERSING, FALLOUT, ACIDS, PARTICLES, DEPOSITION, PREDICTIONS, RISK, MODIFICATION, SYMPOSIA

Distribution Statement : APPROVED FOR PUBLIC RELEASE