Accession Number:

ADA413685

Title:

Modeling of Radiation from High Temperature Chemically Reacting Flows

Descriptive Note:

Rept. for 15 Apr 1998-30 Sep 2002

Corporate Author:

PENNSYLVANIA STATE UNIV UNIVERSITY PARK DEPT OF AEROSPACE ENGINEERING

Report Date:

2002-01-28

Pagination or Media Count:

7.0

Abstract:

The interaction of a jet from a 60-lbf thruster positioned on the side of a small rocket, using the direct simulation Monte Carlo method DSMC was applied to model the three-dimensional jet-atmosphere interaction. Chemical reactions between free stream and plume species were included in the simulations. Altitudes of 80 to 160km and velocities of 3, 5 and 8 kmsec were considered. Chemical reactions between free stream and plume species were included in the simulations. Both uniform and non-uniform conditions were used at the thruster exit. A Navier-Stokes solver was used to calculate flow inside the thruster and in the near field of the plume. A two-stage DSMC numerical strategy was then used to calculate the plume, with sequential computations of an axisymmetric plume coreflow and three-dimensional plume-freestream interaction. The impact of rocket velocity and altitude on the plume-atmospheric interaction in terms of species produced by chemical reactions that can contribute to UV and MWIR radiation was examined. The UV radiation due to the NO and OH species has been computed and is sufficiently high such that an imager filtered to the 250 and 310 nm pass bands would be able to detect this radiation. These methodology is now being applied to generic cases related to the Miniaturized Kill Vehicle MKV.

Subject Categories:

  • Statistics and Probability
  • Rocket Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE