GVT-Based Ground Flutter Test without Wind Tunnel

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$99,913.00
Award Year:
2008
Program:
STTR
Phase:
Phase I
Contract:
NNX08CD34P
Award Id:
87878
Agency Tracking Number:
070179
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
9489 E. Ironwood Square Drive, Scottsdale, AZ, 85258
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
182103291
Principal Investigator:
Ping-Chih Chen
Principal Investigator
() -
pc@zonatech.com
Business Contact:
Jennifer Scherr
Business Official
(480) 945-9988
Research Institution:
Arizona State University

P.O. Box 873503
Tempe, AZ, 85287-3503
(480) 965-1158
Nonprofit college or university
Abstract
ZONA Technology, Inc (ZONA) and Arizona State University (ASU) propose a R&D effort to develop a ground flutter testing system without wind tunnel, called the Dry Wind Tunnel (DWT) system. The DWT system consists of a ground vibration test (GVT) hardware system and a real-time unsteady aerodynamic force generation software developed from an aerodynamic reduced order model (ROM). The ground flutter test using the DWT system operates on the real structural model, thereby no scale-down structural model is involved. Furthermore, the impact of the structural nonlinearities on the aeroelastic stability can be automatically included. Moreover, the aeroservoelastic characteristics of the aircraft can be easily measured by simply including the flight control system in the loop. In addition, the unsteady aerodynamics generated computationally is interference-free from the wind tunnel walls. Finally, the DWT can be conveniently and inexpensively carried out as a post GVT test with the same hardware. In Phase I, we will validate this DWT concept on a rectangular flat plate with a reference flutter solution. Through this validation process, the most significant hardware issues will be resolved to pave the way for a successful Phase II validation on a complex structure, such as a real aircraft.

* information listed above is at the time of submission.

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