NASA SBIR 2009 Solicitation


PROPOSAL NUMBER: 09-1 A2.07-9816
SUBTOPIC TITLE: Flight and Propulsion Control and Dynamics
PROPOSAL TITLE: Flight Dynamic Simulation with Nonlinear Aeroelastic Interaction using the ROM-ROM Procedure

SMALL BUSINESS CONCERN (Firm Name, Mail Address, City/State/Zip, Phone)
ZONA Technology, Inc.
9489 E. Ironwood Square Drive
Scottsdale, AZ 85258 - 4578
(480) 945-9988

PRINCIPAL INVESTIGATOR/PROJECT MANAGER (Name, E-mail, Mail Address, City/State/Zip, Phone)
Ping Chih Chen
9489 E. Ironwood Square Dr.
Scottsdale, AZ 85258 - 4578
(480) 945-9988

Estimated Technology Readiness Level (TRL) at beginning and end of contract:
Begin: 2
End: 6

TECHNICAL ABSTRACT (Limit 2000 characters, approximately 200 words)
ZONA Technology, Inc. (ZONA) proposes to develop an integrated flight dynamics simulation capability with nonlinear aeroelastic interactions by combining a flight dynamics model and an added-on nonlinear aeroelastic solver in a Simulink environment. This nonlinear aeroelastic solver is generated by interacting a nonlinear structural reduced order model (ROM) with a Neural-Network-based (NN-based) aerodynamic ROM, called the ROM-ROM procedure, to provide the incremental aeroelastic forces and moments to a given flight dynamics model. In this way, the flight dynamics model is kept with minimum changes so that this integrated flight dynamics simulation remains in the frame work of a 6 degrees-of-freedom simulation environment. The nonlinear structural ROM employs a so-called ELSTEP/FAT procedure that operates on a nonlinear finite element method, such as MSC.Nastrans solution 106 to construct a set of modal-based nonlinear stiffness matrices. The NN-based aerodynamic ROM is generated using a system identification technique operating on a CFD code to evaluate the weights and biases in a two-layer feed-forward neural network system. The end product is called NL-DFS which can simulate the key aeroelastic coupling mechanism between nonlinear structural dynamics and nonlinear unsteady aerodynamics with classical rigid body dynamics of a slender, flexible and sizable aircraft in nonlinear aerodynamic flight conditions.

POTENTIAL NASA COMMERCIAL APPLICATIONS (Limit 1500 characters, approximately 150 words)
A flight dynamics simulation capability with an added-on nonlinear aeroelastic solver is still not available. NASA has been working for many years towards achieving a software package that would accurately predict the interaction between flight dynamics considering airframe structural flexibility in closed-loop with flight control laws.
The proposed NL-DFS is aimed at providing an expedient multidisciplinary nonlinear flight simulation tool to perform an efficient flaw debugging for advanced control laws as well as to promote physical understanding of the in-flight observed dynamic behaviors due to evolutionary designs. It also will assist in the prediction of the instabilities onset prior to envelop expansion programs. NL-DFS will be especially valuable during NASA's current and next generation flying quantities and envelope expansion programs.

POTENTIAL NON-NASA COMMERCIAL APPLICATIONS (Limit 1500 characters, approximately 150 words)
ZONA's business plan for NL-DFS will follow ZONA's flagship software, called: ZAERO, product/service sales strategy. The added capabilities developed in NL-DFS will strengthen ZONA's market position in the aerospace industry. NL-DFS will be marketed towards flight test applications on a wide class of aerospace vehicles such as: (a) USAF's F-22 and F-35 aircrafts at Edwards AFB, (b) UASF's Hilda, sensorcraft as well as stealth and morphing UAV/UCAV, (c) DARPA's Morphing Aerostructure (MAS), (d) Boeing 7E7 and future executive jet designs of Cessna, Raytheon, etc. The proposed NL-DFS can also be applied to validate health management strategies specifically designed for aircraft designs with prominent aeroelastic characteristics.

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.

Controls-Structures Interaction (CSI)
Guidance, Navigation, and Control
Software Tools for Distributed Analysis and Simulation
Structural Modeling and Tools

Form Generated on 09-18-09 10:14