NASA STTR 2007 Solicitation


PROPOSAL NUMBER: 07-1 T8.02-9812
RESEARCH SUBTOPIC TITLE: Component Development for Deep Throttling Space Propulsion Engines
PROPOSAL TITLE: Multi-Phase Flow Analysis Tools for Solid Motor Applications

NAME: Tetra Research Corporation NAME: Mississippi State University
STREET: 420 Park Avenue West STREET: Engineering Research Center
CITY: Princeton CITY: Mississippi State
STATE/ZIP: IL  61356 - 1934 STATE/ZIP: MS  39762 - 9627
PHONE: (815) 872-0702 PHONE: (662) 325-4586

PRINCIPAL INVESTIGATOR/PROJECT MANAGER (Name, E-mail, Mail Address, City/State/Zip, Phone)
Rex Chamberlain
420 Park Avenue West
Princeton, IL 61356 - 1934
(815) 872-0702

Expected Technology Readiness Level (TRL) upon completion of contract: 1 to 5

TECHNICAL ABSTRACT (Limit 2000 characters, approximately 200 words)
The challenges of designing, developing, and fielding man-rated propulsion systems continue to increase as NASA's Vision for Space Exploration Program moves beyond the Space Shuttle and RSRM. The number and type of different propulsion elements required are significant, and predicting internal solid motor behavior and characteristics and assessing external environments due to plume impingement on vehicle structures is a top priority. Solid motors do not require pre-start thermal conditioning but can be throttled by grain shape and pintle design, and thus the analysis tools must be flexible and prepared to meet the appropriate simulation readiness level. Our proposed innovation will enhance existing engineering software by combining new flow solution methodologies with appropriate boundary conditions to create a novel toolset for complex multi-phase solid rocket analyses. The innovation will be based on the LOCI/CHEM multi-physics analysis package and will utilize new LOCI features, new multi-phase flow models, and theoretical and phenomenological boundary conditions to create a unique software tool for solid propellant burning, particle breakup, surface erosion, and environment characterization for next generation solid motors. Our research products will provide NASA with the important capability to simultaneously analyze solid propellant combustion, heat transfer, and nozzle erosion within a single numerical framework.

POTENTIAL NASA COMMERCIAL APPLICATIONS (Limit 1500 characters, approximately 150 words)
This technology will provide NASA with an advanced analysis capability for the prediction of multi-phase flows in solid motors, with and without throttling, that will include models for particle breakup, agglomeration, and surface erosion. Potential enhancements to the these prediction tools include burning particles with smoke in a mixed Eulerian/Lagrangian framework, improved droplet/gas interface modeling for better statistical representations of particle laden flows, and extended model validation. The proposed methodology for multi-phase solid motor flows is also well suited for extensions to additional multi-physics capabilities of commercial interest to NASA, including conjugate heat transfer within the solid propellant.

POTENTIAL NON-NASA COMMERCIAL APPLICATIONS (Limit 1500 characters, approximately 150 words)
The growing trend toward complex multi-phase analyses is opening significant new markets as more difficult problems can be addressed using advanced computational techniques. The ability to easily set up and analyze solid motor problems in a timely manner will allow industry to speed development of new products and streamline testing. Further enhancements to the CHEM solid modeling system, will find application in the aerospace, automotive, environmental, and nuclear industries. The basic architecture of the software will remain the same while new plug-in physical models will be developed to address niche markets.

NASA's technology taxonomy has been developed by the SBIR-STTR program to disseminate awareness of proposed and awarded R/R&D in the agency. It is a listing of over 100 technologies, sorted into broad categories, of interest to NASA.

Fundamental Propulsion Physics

Form Generated on 09-18-07 17:52