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Advanced Numerical Tools for Design and Analysis of In-Space, Valve and Feed…

Award Information

National Aeronautics and Space Administration
Award ID:
Program Year/Program:
2007 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Combustion Research and Flow Technology, Inc.
6210 Kellers Church Road Pipersville, PA -
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2007
Title: Advanced Numerical Tools for Design and Analysis of In-Space, Valve and Feed Systems
Agency: NASA
Contract: NNM07AA62C
Award Amount: $99,993.00


In-space valves for the main fuel and oxidizer feed systems are required to provide precise control, wide throttling range and handle rapid on-off control. These design requirements result in significant unsteady, transient effects both on the fluid mass flow rate, as well as the torque required from the actuators controlling the valve. However, there currently are no fundamental analytical or numerical modeling tools that can predict the unsteady/transient performance of these valves; current design tools are limited to quasi-steady models and empirical correlations. The innovation proposed here is a high-fidelity, comprehensive numerical tool that can characterize the transient performance of these flight valves and provide design support. Geometry complexity and numerical accuracy problems associated with resolving valve configurations with moving surfaces are addressed via a grid adaption strategy within an unstructured framework. Unsteady effects due to both turbulence interactions as well as multi-phase cavitation are addressed with advanced numerical framework that incorporates both real-fluid thermodynamics for cryogens as well as advanced LES models for unsteady turbulence modeling. The tools and technology developed here would directly impact design support efforts for the J-2X upper-stage engine in the Ares 1 launcher envisioned under the Constellation program for the mission to the moon.

Principal Investigator:

Ashvin Y. Hosangadi
Principal Investigator

Business Contact:

Paula Y. Schachter
Business Official
Small Business Information at Submission:

Combustion Research and Flow Technology
6210 Keller's Church Road Pipersville, PA 18947

EIN/Tax ID: 232759059
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No