NASA 1996 SBIR Phase I


PROPOSAL NUMBER : 96-1 01.05-6125A

PROJECT TITLE : A Stand-Alone Sensitivity Solver for Hypersonic Design Applications

TECHNICAL ABSTRACT (LIMIT 200 WORDS)

Recent advancements in both computational efficiency and physical-modeling capabilities have increased the utility of computational fluid dynamics in the hypersonic, vehicle-design process. However, beyond knowing the aerodynamic characteristics of a fixed configuration, the vehicle designer is interested in how to change the design to improve the system's performance. Recent research into the sensitivity-equation (SE) approach has demonstrated the ability to efficiently determine sensitivity derivatives in the framework of a high-order aerodynamic analysis. AeroSoft, Inc. as a small-business concern, proposes to provide a stand-alone software package which solves the valuable and insightful sensitivity equations and couples with any CFD flow solver. Building on past research, the objectives are to improve the sensitivity field at boundaries, incorporate viscous effects, derive the sensitivity equations for the Reynolds-Averaged Navier-Stokes equations and develop models applicable to turbulent flows. The main goal of the sensitivity package is to support NASA's interests in hypersonic flight and air-breathing propulsion systems by providing engineers with a useful tool for aerodynamic optimization, parametric guidance of complex flows, and approximation to near-by flows.
POTENTIAL COMMERCIAL APPLICATIONS
Military, commercial and general-aviation aircraft companies may acquire a missing tool for design of aerodynamic systems at all operational speeds - from high-lift approach to hypersonic re-entry. The software will lead to technological progress, economic growth and new jobs.
NAME AND ADDRESS OF PRINCIPAL INVESTIGATOR
Andrew G. Godfrey, Senior Research Scientist
AeroSoft, Inc.
1872 Pratt Drive, Suite 1275
Blacksburg, VA 24060-6363
NAME AND ADDRESS OF OFFEROR
AeroSoft, Inc.,
1872 Pratt Drive,
Suite 1275,
Blacksburg, VA 24060-6363