DETERMINING AERODYNAMIC CHARACTERISTICS OF AN ASYMETRIC F-14

DETERMINING AERODYNAMIC CHARACTERISTICS OF AN ASYMETRIC...

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DETERMINING AERODYNAMIC CHARACTERISTICS OF AN ASYMETRIC F-14 Aero Engineering Laboratory AOE 4154 Lab Instructor: Dr. Roger Simpson Lab TA: Scott Burger Lab Section: Friday 3:55 – 5:20 Date Performed: October 2, 2009 Student Name: Craig Sossi Student Number: 904512344 Honor Pledge: By submitting this document I pledge that I have neither given nor received unauthorized aid. Craig Sossi Page | 1
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observe the aerodynamic effects of asymmetric wing sweep and various configurations on an F-14 model. The Virginia Tech Stability Wind tunnel is used in conjunction with LabVIEW and a series of sensors to gather force and moment data on the model during testing. This data is then compiled into plots of useful force and moment coefficients. It is observed that by removing the horizontal stabilizers of the model, the longitudinal forces and moments change, while the lateral- directional forces and moments remained relatively unchanged. INTRODUCTION Wind tunnel testing can provide engineers with valuable information regarding the aerodynamic characteristics of a particular aircraft. Data gathered from wind tunnel tests can be used to determine stability parameters, control surface effectiveness and the effect of various aircraft components on overall aerodynamics of the vehicle. [1] To perform wind tunnel tests that yield useful data, there are many factors that come into play. The aircraft model itself must be a proper representation of the full-scale vehicle. Various parameters of the wind tunnel must also be determined and accounted for, such as tunnel turbulence and flow angularity throughout the test section. Proper mounting devices must also be used so as to not obscure the flow around the model or interfere with model movements that are relevant to the data being gathered. For this experiment, the Virginia Tech Stability Wind Tunnel will be used to determine the aerodynamic characteristics of an F-14 model. In particular, asymmetrical wing sweep and the presence/absence of horizontal stabilizers will be tested to determine the flight characteristics of an F-14 under these conditions. Since wind tunnel testing is relatively inexpensive compared to the cost of a real F-14, flight characteristics for these various configurations can be determined without the loss of millions of dollars. This information can then be taught to pilots so if they encounter a scenario where they must fly with something like asymmetric wing sweep, they know what to expect in terms of aircraft handling and have a better chance of saving the aircraft. EXPERIMENT DESCRIPTION For this experiment, the Virginia Tech Stability Wind Tunnel will be used as the test platform. An overview of the wind tunnel layout is shown in figure 1. Page | 2
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DETERMINING AERODYNAMIC CHARACTERISTICS OF AN ASYMETRIC...

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