Multiphase Modeling of Solid Rocket Motor Internal Environment

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: 80NSSC18C0209
Agency Tracking Number: 170046
Amount: $749,859.00
Phase: Phase II
Program: STTR
Solicitation Topic Code: T1
Solicitation Number: STTR_17_P2
Solicitation Year: 2017
Award Year: 2018
Award Start Date (Proposal Award Date): 2018-09-27
Award End Date (Contract End Date): 2020-09-26
Small Business Information
701 McMillian Way Northwest, Suite D, Huntsville, AL, 35806-2923
DUNS: 185169620
HUBZone Owned: N
Woman Owned: Y
Socially and Economically Disadvantaged: N
Principal Investigator
 Manuel Gale
 (256) 726-4860
Business Contact
 Silvia Harvey
Phone: (256) 726-4858
Research Institution
 Mississippi State University
 Lee Boulevard
Mississippi State, MS, 00000-0000
 Federally funded R&D center (FFRDC)

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.

* Information listed above is at the time of submission. *

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