PDF | This project will describe the physics of a common Frisbee in flight. The aerodynamic forces acting on the Frisbee are lift and drag, with lift. Issue 1 | Article The Aerodynamics of Frisbee Flight. Kathleen Baumback. University of South Florida. Advisors: Masahiko Saito, Mathematics and Statistics. Use aerodynamic principles to predict the flight direction and distance for a Frisbee.
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I feel I have covered most of the rotational motion torque and angular momentum learning objectives, so I am moving on to aerodynamics! I am not going to go super in depth into the very basic concepts, though I am going to explain the aspects that I feel are most relevant to ultimate. Weight is acting straight down towards the earth, and is the same force that acts on all objects influenced by gravity.
The force exerted by air is split up into two components: The curvature of the disc causes the air moving on top of the disc to travel faster and therefore have lower pressure than the air moving on the bottom of the disc.
Similar to a plane wing, this difference in pressure above the disc and below the disc results in lift. This depends on the shape of the disc and angle of attack.
The angle of attack shown in Figure 2is the angle between the horizontal and the direction of air flow. Generally, C increases linearly in relation to an increase of an angle of attack, until a certain point where it drops off.
Drag can also be calculated by using an equation very similar to lift:. The one difference in these equations is that the C for this equation is the coefficient of drag. Contrary to lift, the coefficient of drag increases quadratically with an increase in the angle of attack. The lift-to-drag ratio varies depending on the angle of attack. The graph below is one showing the lift-to-drag ratio y axis in relation to the angle of attack of the disc x axis for a standard discraft disc. This relates to the game of ultimate because for short throws, where flight efficiency is not as important, releasing the disc parallel to the ground is fine.
The explanations that you gave for the variables in your equations were easy to follow and helped me understand your physics principles.
I liked how you related the physics principles to the actual game rather than just the nature of the disc. More of that would be aerodynzmics to see.
aerodynamics – How do disks generate lift? – Aviation Stack Exchange
I liked how you talked about not only the equations, but also how it relates back to real life and how one should throw the frisbee. It made your post more interesting. Also, do you have any idea how different shapes could effect aeroddynamics C value besides a frisbee? Say, a golf ball? You are commenting using your WordPress.
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The Aerodynamics and Stability of Flying Discs
Notify me of new comments via email. When a Frisbee is in flight there are three main forces acting on it: Lift can aeeodynamics calculated using the equation: Drag can also be calculated by using an equation very similar to lift: Applications of Rotational Motion aedodynamics Ultimate: Leave a Reply Cancel reply Enter your comment here Fill in your details below or click an icon to log in: Email required Address never made public.