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Questions tagged [aerodynamics]

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This is a bit off the cuff. I was watching a video of a performance analyst for cyclists. I'm not that into cycling, but I've been riding more recently and this piqued my interest. One of the things ...
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I recently bought new mountain bicycles. In fear of theft, I stored them a medium sized work room inside the apartment. After ~20 minutes the situation was unbearable. Even after opening all the ...
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Having searched the web and found nothing, I'm asking y'all: Let's say I have two flat surfaces, and I pull them apart quickly. How do I calculate the aerodynamic drag resisting this motion? I'm sure ...
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I currently have a 24" chimney fan rated at about 10000 CFM blowing through a 24" tube. If I were to make a cone so that I could install a 32" fan to blow through the same 24" tube,...
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For payloads of 100kg and 1000kg, what is the cross-over distance at which the weight of the fuel used to travel a certain distance is equal for a ballistic missile and a cruise-missile/plane? Assume ...
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Consider an all-wheel-drive (AWD) car in which the reaction forces on all wheels are equal, and the coefficient of friction is uniform across them. Assuming the vehicle is sufficiently light, the ...
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I am looking at this paper for unsteady propeller blade loading estimation in non-uniform flow. According to the paper, we can estimate the thrust of a propeller blade section in non-uniform flow by ...
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I am setting up a test-bed for an experiment. Here's what I have. A circular car exhaust The gas comes out of the exhaust at a velocity, x. We need to lower the gas velocity to x/3 Conditions The '...
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I'm running a numerical data model of a wind turbine. I know the blade in question is an S814, as described in the NREL documentation here. I have the necessary blade size data in a MATLAB file shown ...
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I am just a noobie in engineering stuff. Should the DC Fan 1 suck the air out of the Al heat sink OR push air into it for more efficient heat dissipation? For the small heat sink placed on the colder ...
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I would like to measure the performance and optimize the design of an axial turbine using mean-line modelling. However, most of the optimization codes I found on GitHub require wedge angles, stagger ...
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The question involves this topic; High-wind rollover damage in center-pivot irrigation systems. This study involves the additive engineering possibilities to achieving an aerodynamic remedy ...
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Just as lift - off of a spacecraft commences, that spacecraft undergoes aerodynamic pressure. After a certain point, the spacecraft reaches Max Q or maximum aerodynamic pressure. I do know that Max Q ...
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I am struggling to understand what characteristic scales mean in the context of thin shear layer equations. I am referring mostly to the following paragraph from the book "Turbulent Shear Layers ...
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I'm trying to figure out the torque due to aerodynamic forces on an aircraft confined to two dimensions (so no sideslip). Defining the windframe with basis vectors $\hat{w_1}, \hat{w_2}$ obtained by ...
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