NASA STTR 2017-II Solicitation

Proposal Summary


PROPOSAL NUMBER:
 17-2- T1.02-9954
PHASE 1 CONTRACT NUMBER:
 NNX17CM23P
SUBTOPIC TITLE:
 Detailed Multiphysics Propulsion Modeling & Simulation Through Coordinated Massively Parallel Frameworks
PROPOSAL TITLE:
 Multiphase Modeling of Solid Rocket Motor Internal Environment
SMALL BUSINESS CONCERN (SBC):
RESEARCH INSTITUTION (RI):
Name:   CFD Research Corporation
Name:   Mississippi State University
Street:  701 McMillian Way Northwest, Suite D
Street:  449 Hardy Rd, 129 Etheredge Hall
City:   Huntsville
City:   Mississippi State
State/Zip:  AL  35806-2923
State/Zip:   MS 39762 - 6156
Phone:  (256) 726-4800
Phone:   (662) 325-2346


Principal Investigator (Name, E-mail, Mail Address, City/State/Zip, Phone)
Manuel Gale
manuel.gale@cfdrc.com
701 McMillian Way Northwest, Suite D Huntsville, AL 35806 - 2923
(256) 726-4860

Business Official (Name, E-mail, Mail Address, City/State/Zip, Phone)
Silvia Harvey
silvia.harvey@cfdrc.com
701 McMillian Way Northwest, Suite D Huntsville, AL 35806 - 2923
(256) 726-4858
Estimated Technology Readiness Level (TRL) :
Begin: 3
End: 5
Technical Abstract

Solid rocket motor (SRM) design requires detailed understanding of the slag accumulation process in order to: predict thrust continuity, optimize propellant conversion efficiency, predict coning effects from sloshing, and to assess potential orbital debris (slag) hazard. Current state-of-the-art models for SRM environment do not have the capability to simulate the accumulation and dynamics of slag in SRMs as they rely on a Lagrangian particle approach that are only capable of predicting the location of accumulation. In Phase I, a multiphase framework comprising of gas-phase, a dense slag-phase, and Lagrangian particles representing aluminum and alumina was developed and demonstrated. Phase II effort will focus on extending the developed approach by a) incorporating improved transport and thermal properties of slag, b) improving numerical approach for solving transport of gas and slag-phase in SRM environment, c) enhancing the coupled flow simulation capabilities including accelerated frame of reference to predict slag dynamics and d) providing detailed verification and validation of sub-models and overall simulation capabilities. The tools developed will be of great use in designing and developing next generation SRMs and effect of slag on thrust oscillations, coning and debris prediction.

Potential NASA Applications

Prediction of slag accumulation during SRM operation, Analysis of slag accumulation effects on propellant conversion efficiency, Prediction of sloshing and the potential effects on SRM conning, Assessment of slag as a potential debris hazard, Support new SRM concept and trade studies analysis

Potential Non-NASA Applications

Military application: Prediction of SRM burnout and time at which slag poses as a potential hazard; prediction of thermal signatures associated with slag for both tactical and missile defense. Civilian Applications: Analysis of volcano eruptions and dispersion of hazardous lava; slosh predictions for ships and civil transport applications.


Form Generated on 08/02/2018 17:10:31