Justin Poh
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AIRFOIL FLUTTER:
A STUDY OF STEADY AND QUASI-STEADY MODELS

Dynamics, Fall 2013

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In aerodynamic design, airfoil flutter is an important consideration because it can be the cause of large amplitude oscillations that could lead to structural failure of the airfoil.


This was a project conducted as part of the Dynamics course at Olin College. The aim was to implement several models using steady and quasi-steady aerodynamics and study the ability of the model to predict the behavior of an airfoil at different airspeeds below, at and above the critical airspeed. In particular, the prediction of the critical speed and the ability of the model to accurately predict airfoil plunge and pitch displacements were studied. 


Through this project, we have concluded that a model implementing steady aerodynamics is able to accurately predict the critical airspeed at which flutter occurs because it is a better model of the steady-state response of the airfoil. However, a model implementing quasi-steady aerodynamics is able to more accurately predict the plunge and pitch behavior of the airfoil becuase it attempts to account for time-dependent effects of the airstream on the airfoil. Despite these conclusions, this project was limited by our ability to accurately determine some of the parameters of our model as well as account for other factors effecting the airfoil. As such, future work should take into account other non-linearities of the system as well as attempt to better determine the parameters of the system such as damping coefficients and the contribution due to dry friction.

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You can download a copy of the full report from the download link at the bottom of this page. You can also view the full report at the following link:
View the Full Report Here!
dynamics_project_fall_2013_final_writeup.pdf
File Size: 5555 kb
File Type: pdf
Download File

Last Updated: 27th January 2021
  • Home
  • About Me
  • Course Projects
    • Mechanical Engineering/Material Science >
      • Design Nature, Fall 2012
      • Transport Phenomena, Fall 2014
      • Mechanical Design, Fall 2014
      • MechSolids, Spring 2014
      • Dynamics, Fall 2013
    • Robotics >
      • Principles of Engineering, Fall 2013
      • Fundamentals of Robotics, Fall 2014
    • Product Design & Development >
      • NEADS System Design, Fall 2015
      • UOCD, Spring 2014
      • Engineering for Humanity, Spring 2013
    • Electrical/Software Engineering >
      • Software Design, Fall 2013
      • Real World Measurements, Spring 2013
      • Modeling & Control, Fall 2012
    • Data Science & Analysis >
      • Analyzing Gait Data, Spring 2015
      • Crowd Flow Modeling, Spring 2015
  • Undergraduate Research
    • Gator Research, Spring 2016
    • Gator Research, Fall 2015
    • Robotic Tuna Research, Fall 2014
    • Robotic Tuna Research, Summer 2014
  • Resume
  • Job History
  • Phoenix Racing