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Flight Dynamic Simulation with Nonlinear Aeroelastic Interaction using the…

Award Information

National Aeronautics and Space Administration
Award ID:
Program Year/Program:
2011 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
ZONA Technology, Inc.
9489 E. Ironwood Square Drive Scottsdale, AZ 85258-
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Woman-Owned: No
Minority-Owned: Yes
HUBZone-Owned: No
Phase 2
Fiscal Year: 2011
Title: Flight Dynamic Simulation with Nonlinear Aeroelastic Interaction using the ROM-ROM Procedure
Agency: NASA
Contract: NNX11CB68C
Award Amount: $599,998.00


ZONA Technology, Inc. proposes to develop an integrated flight dynamics simulation capability with nonlinear aeroelastic interactions by combining a flight dynamics model and an add-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 and a gust ROM to provide the incremental aeroelastic forces and moments of a classical 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 an ELSTEP/FAT procedure that operates on a commercial nonlinear finite element software to construct the nonlinear stiffness matrices. The NN-based and gust 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 NN system. The end product is called FuNL-DFS that can simulate the key aeroelastic coupling mechanism between nonlinear structural dynamics and nonlinear unsteady aerodynamics with classical rigid body dynamics and can be used for control law development, maneuvering flight simulation, flight loads prediction and handling quality assessment. The FuNL-DFS system will be validated with the flight test data of the Predator B Aircraft.

Principal Investigator:

Ping Chih Chen
Principal Investigator

Business Contact:

Jennifer Scherr
Business Official
Small Business Information at Submission:

ZONA Technology, Inc.
9489 East Ironwood Square Drive Scottsdale, AZ 85258-4578

EIN/Tax ID: 860540628
Number of Employees:
Woman-Owned: No
Minority-Owned: Yes
HUBZone-Owned: No