Accession Number : ADA302750

Title :   Launch Vehicle Abort Source Strength Model - Volume 2: Source Characterization.

Descriptive Note : Final rept. 10 Aug 92-10 Aug 94,

Corporate Author : MARTIN MARIETTA ASTRONAUTICS GROUP DENVER CO

Personal Author(s) : Prince, Stephen P. ; Banning, Douglas W.

PDF Url : ADA302750

Report Date : 04 MAR 1995

Pagination or Media Count : 250

Abstract : A mathematical model was generated to predict toxic chemicals released from an explosion involving a Titan II, Delta II, or Titan IV launch vehicle. The model was based on a variety of scientific and engineering input: the chemical description of interacting rocket propellants, data from previous accidents involving these or similar launch systems, an analysis of vehicle failure modes and propellant mixing characteristics, and thermochemical properties of reacting rocket propellants and their combustion products. Outputs of the model include the chemical composition and average molecular weight of the fireball cloud, the adiabatic flame temperature, the fireball size, and the total heat release. Input variables to the model include the time and altitude of abort, the mixing ratio for liquid propellants, amounts of unreacted liquid rocket propellants thermally decomposed, and the amount of air entrained into the fireball cloud. The mathematical model has been encoded into Fortran 77 for integration with the Rocket Exhaust Effluent Diffusion Model (REEDM) currently used at the Vandenberg Air Force Base (VAFB) Space Launch Complex.

Descriptors :   *MATHEMATICAL MODELS, *CHEMICAL CONTAMINATION, *INTERACTIONS, *TOXICITY, *EXPLOSION EFFECTS, *LAUNCH VEHICLES, *ROCKET PROPELLANTS, INPUT, OUTPUT, GUIDED MISSILES, RATIOS, TEMPERATURE, SIZES(DIMENSIONS), MODELS, CHEMICALS, MOLECULAR WEIGHT, EXPLOSIONS, FAILURE, VARIABLES, CHEMICAL COMPOSITION, THERMOCHEMISTRY, LAUNCHING, RELEASE, NUCLEAR CLOUDS, LIQUID PROPELLANTS, MIXING, AIR FORCE FACILITIES, FLAMES, HEAT, ALTITUDE, LIQUID ROCKET PROPELLANTS, ADIABATIC CONDITIONS, LAUNCHING SITES, ACCIDENTS, NUCLEAR FIREBALL, COMBUSTION PRODUCTS, ABORT.

Subject Categories : Physical Chemistry
      Operations Research
      Guided Missile Launching and Basing Support
      Rocket Propellants

Distribution Statement : APPROVED FOR PUBLIC RELEASE