A Phenomenological Framework for Reentry Dispersion Source Modeling
Abstract
Analysis of the total trajectory deflection (or impact miss) of a ballistic reentry vehicle (BRV) is still an approximate science. Advances in ballistic trajectory estimation have allowed the effects of individual dispersive events that occur in flight tests to be accurately quantified. However, the prediction of these effects on an a priori basis is a flight mechanics problem with complex aerothermodynamic coupling that has proven difficult to model without considerable testing and theoretical iteration. As a result, the need exists for an overall modeling framework which is both complete and flexible enough to accommodate the various phenomenological models that evolve for the contributors. This framework has been developed and is embodied in a unique hybrid computer code. The code is modular in construction enabling interchanging and upgrading of the various elements. It has proven to be a powerful tool for evaluating the BRV dispersion phenomena and for determining model and parameter sensitivities. It is constructed to allow Monte Carlo statistical studies to be conducted economically. This report provides an overview of the various dispersion-producing events and describes the code structure, modeling and application.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1977
- Accession Number
- ADB024098
Entities
People
- J. J. Pettus
- R. A. Larmour
- R. H. Palmer
Organizations
- The Aerospace Corporation