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Flutter Analysis Model

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Models a 2 DOF wing using SimMechanics™.



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This model demonstrates how to implement a coupled structural-aerodynamic problem.
The wing, otherwise rigid, is allowed to pitch and plunge. The motion of the wing is defined using SimMechanics blocks. The aerodynamic model is a simple, quasi-steady formulation.

Dynamic pressure is manipulated by varying the Mach number & Altitude. You can also vary the CG location of the wing by double clicking on the picture of the BACT subsystem.

The structural, mass, and aerodynamic properties all come from the following paper:
AIAA 96-3437
"Modeling the Benchmark Active Control Technology Wind Tunnel Model for Application to Flutter Suppression" by Martin R. Waszak of NASA Langley.

Automatic flutter detection is implemented via a state-machine in Stateflow.

Comments and Ratings (15)



david (view profile)

Jayson Gunesh

I did my FYP on aeroelasticity but rather into the mode shapes of vibration caused by the structural dynamics and inertia interaction of 3 different type of transport a/c. I was so eager to run a sim based on what I studied in ANSYS but due to limited time allocated, I had to drop this idea. MATLAB would definitely be very helpful and thanks to your contribution I believe that it would be of tremendous help to me to go that extra mile. Thanks


azuwan (view profile) there anyone here can help me....
i have to make a project that can recognize two type of fruit....epal n oren....can anyone here help me????

For more robust control law design for flutter suppression of BACT model, see Mukhopadhyay, V., “Transonic Flutter Suppression Control Law Design and Wind Tunnel Test Results,” Journal of Guidance, Control, and Dynamics, Vol. 23, No. 5, 2000, pp. 930–937 (see also pp. 913–956; and Vol. 23 No. 6, 2000, pp. 1093–1139; and Vol. 24, No. 1, 2001, pp. 146–192 for all BACT related papers)

Ahmed Lachemat


mohammed khaled

thank you a lot for this informations and i love mathworks very much

mohammed khaled

Milton Fernandez

name name

jaber latify

hamed nozari

Sanjay Mata

Samual roxio

very informative

Mohammed Anwar

I could not open the file with my Matlab version 12.1, is there anyway to open it with this version??


Updated license


Removed the PDF from the submission.


Added license info.

MATLAB Release
MATLAB 7.3 (R2006b)

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