- AE430 - AE429 - ME628
Independent Studies
- AE365 - AE465
Special Topic
- AE675
- ME610 - AE200


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Aerospace Related Project
Modeling of Aircraft
Structural Systems

Dr. Marzocca is interested in developing pertinent models of air-vehicle structural systems in nontraditional
configurations under coupled fluid, thermal, and mechanical loads, and exposed to extreme environmental conditions for structural dynamics and aeroelastic applications. The structural model used to discretize wing, fuselage, tail and other components of the aircraft is usually a combination of plates, membranes, rods, panels, only to name a few. In addition, the aircraft structures will most likely be nonhomogeneous, anisotropic, and composed of passive and active materials. Morphing and other nontraditional configurations are being investigated.
Aeroelastic Modeling
 for Control Design


Dr. Marzocca is interested in developing aeroelastic models that provide realistic representations of wing/aircraft structures for control design purposes. Structural and aerodynamic models are integrated  to properly characterize the wing/aircraft plant. Proper methodologies for the active control of aeronautical structural systems (Optimal, LQR, MBB, LQG, Limiter,  Adaptive, etc) have been considered and are under investigation. Their implementation would enable an increase of the flutter speed, enhance the aeroelastic response, attenuating excessive vibrations, and convert the unstable LCO into a stable LCO.
Unconventional Control


One of the limitations of the performance of the active control consists of the presence of unavoidable time delays in controller and actuators. These delays can be detrimental in the sense that they induce instabilities of the aeroelastic system. Preliminary results of the effects of delayed feedback control on the aeroelastic response and flutter of low-order aeroelastic model has been investigated. New control methodologies are also contemplated: fuzzy logic, neural network, dynamic limiting control, etc.
flutter predictions


As a team effort, Dr. Marzocca is working on a non-destructive procedure applied in flight or in a wind tunnel, enabling one to predict the flutter instability boundary. The proposed technique combines an analytical approach with the experimental tests. The expected outcomes of this study are a) to reduce the risks of flying in the proximity of the flutter critical boundary, a condition that can destroy the aircraft vehicle, and b) to reduce significantly the amount of flights required in any flight clearance test program that are both time consuming and costly (estimated at around $ 70k per test flight). A strictly related work has been presented at the 14th U.S. National Congress of Applied Mechanics in 2002 and included in a book published by Kluwer Academic Publisher.






With his collaborators, Dr. Marzocca has developed new methodologies based on Volterra series, indicial functions, and on Lyapunov stability criteria that will characterize the behavior of three- dimensional wing structures and will enable one to infer about aeroelastic behavior, flutter, post-flutter and subcritical aeroelastic response. The newly developed method based on Volterra series creates opportunities to approach – in a unified and efficient way – problems of nonlinear aero-servo-elastic response, flutter of uncontrolled/controlled aircraft structures, and the character of the instability boundary. The results of this research are likely to play a great role in the design of advanced flight and space vehicles.
All these studies will bring the nonlinear aeroelastic modeling and design of lifting surfaces to the sufficient maturity that will lead to:

  • improve performance of the modern aircraft wing and
  • will ensure the integrity of valuable wind tunnel models, flight vehicles, and safety of their crew and passengers.


Other Research


HeliNet project, a Solar Energy Electrical Airplane,
HeliNet is a telecommunication infrastructure based on HAVE (High Altitude Very long Endurance) unmanned solar aerodynamic platforms, named HELIPLAT (Helios Platforms).

Dr. Marzocca is working with people from industry. In 1997, Dr. Marzocca developed the materials for a course titled “FEM – Patran/Nastran” for graduate students in Italy. In 1995, Dr. Marzocca served as the instructor for the course “Introduction to Electrotechnics and Electronics for Automotive Applications” supported by the Economic European Community (CEE).

In the last few years Dr. Marzocca has also been an active consultant in the structural dynamics field (CSA Engineering, Inc., Archemide Advanced Composite, Torino, Italy). Also, he has monitored structures, applications of information technology, structural designs, evaluation and repair of existing structures and accident analysis in Italy.

Dr. Marzocca reviewed designs, test procedures, specifications, experiments, and analyses of aircraft and mechanical systems, performed analyses and experimental tests in support of reviews and solve abnormal behaviors and system failures. In addition, Dr. Marzocca is working on the design and production of a prototype of a new snowboard, other mountain equipment, and a prototype helicopter.



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