NASA SBIR 2005 Solicitation

FORM B - PROPOSAL SUMMARY


PROPOSAL NUMBER:05 A2.08-8060
SUBTOPIC TITLE:Modeling, Identification, and Simulation for Control of Aerospace Vehicles to Prepare for Flight Test
PROPOSAL TITLE:Low-Cost, Integrated Ground Test, Simulation, and Flight Control Development Environment

SMALL BUSINESS CONCERN (Firm Name, Mail Address, City/State/Zip, Phone)
Rolling Hills Research Corporation
420 N. Nash Street
El Segundo ,CA 90245 - 2822
(310) 640 - 8781

PRINCIPAL INVESTIGATOR/PROJECT MANAGER (Name, E-mail, Mail Address, City/State/Zip, Phone)
Michael F Kerho
mike@RollingHillsResearch.com
420 N. Nash Street
El Segundo, CA  90245 -2822
(310) 640 - 8781

TECHNICAL ABSTRACT (LIMIT 200 WORDS)
An important mission for NASA is the development of revolutionary flight concepts and technology. The development of Micro unmanned air vehicles (MAVs) and Mars aircraft has received considerable attention recently. Unlike conventional aircraft, MAVs and Mars aircraft suffer from operation in an extremely low Reynolds number flight regime. Generally, a low Reynolds number is considered to be between 150,000 and 500,000. Both MAVs and Mars aircraft, however, can have operational Reynolds number regimes from 20,000 to 120,000. At these extremely low Reynolds numbers, the aerodynamic flow features are dominated by laminar separation and separation bubble effects, which are highly unstable and very dependent upon the free-stream conditions and atmospheric turbulence. Although it is often argued that an exploratory vehicle will operate over a benign portion of the flight envelope, an encounter with strong winds or gusts, particularly during a maneuver, could excite a highly non-linear response. This means that the assumption of linear derivatives for stability and control may not be valid, which could cause the loss of a vehicle designed with a control system based on linear assumptions. It is proposed that a low-cost, integrated ground test, simulation, and flight control development environment be created to address these challenges.

POTENTIAL NASA COMMERCIAL APPLICATIONS (LIMIT 150 WORDS)
The use of the water tunnel to acquire aerodynamic databases at low Reynolds numbers, which match the flight Reynolds number for small UAVs and other exploratory aircraft, will make this system highly desirable. NASA will be able to utilize this integrated test and design environment to measure nonlinear aerodynamics and account for them in flight control systems for MAVs and Mars exploratory vehicles

POTENTIAL NON-NASA COMMERCIAL APPLICATIONS (LIMIT 150 WORDS)
The use of the water tunnel to acquire aerodynamic databases at low Reynolds numbers, which match the flight Reynolds number for small UAVs and other exploratory aircraft, will make this system highly desirable. RHRC will be able to provide both testing and design services to smaller companies that are developing MAVs. The demonstrated utility of the system will also help market RHRC's water tunnels, balances, and software for use by universities and larger companies. Since many universities currently operate their own UAVs as teaching and research tools, the ability to mathematically model them correctly, simulate them, and develop experimental control systems for them will greatly enhance the value of the UAV as a teaching tool.

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.

TECHNOLOGY TAXONOMY MAPPING
Guidance, Navigation, and Control
Simulation Modeling Environment
Testing Facilities
Testing Requirements and Architectures


Form Printed on 09-19-05 13:12