A Multi-disciplinary Tool for Space Launch Systems Propulsion Analysis

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNX12CG35P
Agency Tracking Number: 110034
Amount: $124,955.00
Phase: Phase I
Program: STTR
Awards Year: 2012
Solicitation Year: 2011
Solicitation Topic Code: T9.01
Solicitation Number: N/A
Small Business Information
AL, Huntsville, AL, 35805-1944
DUNS: 185169620
HUBZone Owned: N
Woman Owned: Y
Socially and Economically Disadvantaged: N
Principal Investigator
 Robert Harris
 Principal Investigator
 (256) 726-4800
 contracts-proposals@cfdrc.com
Business Contact
 Silvia Harvey
Title: Business Official
Phone: (256) 726-4858
Email: sxh@cfdrc.com
Research Institution
 Mississippi State University
 Robyn Remstique
 P.O. Box 9637
Mississippi State, MS, 39762-9637
 () -
 Domestic nonprofit research organization
Abstract
An accurate predictive capability of coupled fluid-structure interaction in propulsion system is crucial in the development of NASA's new Space Launch System (SLS). This STTR effort will develop a multi-disciplinary tool to improve CFD prediction capability in modeling coupled fluid structure interaction (FSI) phenomena for many SLS propulsion applications such as flexible inhibitors for SRMs. During Phase I, an Application Programming Interface (API) framework with conservative interface treatment will be developed to couple a NASA production CFD solver with a DoD open source nonlinear large deformation Finite Element solver developed by the proposing firm. The multi-disciplinary tool will be rigorously validated against coupled as well as decoupled problems (fluid and structure individually). Phase I will demonstrate the improved pressure oscillation modeling fidelity and provide great insight into the physics of nonlinear FSI leading to thrust oscillations in SRMs. The Phase II effort will conduct more validations and investigations of several SLS FSI phenomena including the physics of flexible inhibitors in triggering unsteady pressure oscillations and flow induced vibration of turbine and inducer blades in liquid rocket engines.

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

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