All Questions
Tagged with aerospace-engineering aerodynamics
59
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How does one calculate the aerodynamic pressure on a spacecraft during Max Q?
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 ...
- 101
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Characteristic scales in Thin Shear Layers Equations (Aerodynamics)
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 ...
- 3
1
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1
answer
48
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Why do wing-tip vortices cause an induced angle of attack upstream?
My question is the following. Wing-tip vortices induce a downward flow on the root side of the wing. So, if this induction happens at the wing, and these vortices are then shed downstream, why is ...
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Why do trailing edge flaps increase the CL,max of a wing?
I was wondering why do trailing edge flaps increase the lift co-efficient for a given angle of attack. I am guessing it has something to do with delayed flow separation, but this is quite unintuitive, ...
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2
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How does stalled diffuser/wing reduce drag at F1 car?
How stalled diffuser/wing reduce drag at F1 car if in aerodynamics stall/separation is always related to increase in drag?
Any graph of pressure distribution when diffuser is stalled?
From "...
- 239
8
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6
answers
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Can we add treadmill-like structures over the airplane surfaces to reduce friction, decrease drag and producing energy?
I am curious about a method to enhance the efficiency of passenger aircraft during cruise speeds by integrating treadmill-like structures on the fuselage and beneath the wings without changing the ...
- 81
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1
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Is there a way to 'switch OR engage/disengage' power between two different rotating shafts depending on a set RPM (wind speed)?
I'm a final year mechanical eng student, I'm working on designing a prototype of a 'Hybrid vertical axis wind turbine (VAWT)". This hybrid turbine consists of two types of VAWTs Savonius & ...
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5
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834
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Why did the Mythbuster's dimple car get better fuel economy?
I'm trying to understand why the Mythbuster's dimple car gets better fuel economy - if it actually would as I'm not
I understand that a golf ball functions by creating turbulent air flow and via the ...
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2
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297
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How to theoretically determine the flow rate for a fan design?
I am trying to design a ducted axial fan. The fan will be pulling air through a filter, and ejecting out into the atmosphere (For a CO2 direct air capture application). However I want to start with ...
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How Does The Aerodynamics Of This Hanging Rotating Wing VAWT Turbine Function?
We are examining videos of this very fast rotating "hanging VAWT" shown on Youtube:
https://youtu.be/O2MZsK0mvBk
https://youtu.be/7hVQ_rVNRUI
It say in the text description that "...
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1
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284
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What is the approximate horsepower/kW output of a cyclist riding a bike at near ~300km/h?
In 2018, a female cyclist set the outdoors record for fastest cycling clocking in at almost 300km/h. (https://en.m.wikipedia.org/wiki/Denise_Mueller-Korenek), and I am curious to know the approximate ...
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2
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391
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How to calculate missile's radius of turn?
I want to make a simple simulator game and in this game there is a missile that must hit something.
The problem is, I can't find the equation to calculate its radius of turn.
The game is a simulator ...
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1
answer
36
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Converting differential pressure
I need to submit a lab report.
I've measured:
Differential pressure [Volts]
Flow rate [Hz]
Flow Rate [m^3/s]
In my report I need to get the Pressure Differential in Pascal but how can I convert ...
- 3
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67
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Does the weight of a pilot exponentially affect the necessary weight of human-powered aircraft?
The MIT Daedalus, a human-powered craft, weighed about 31 kg. This was significantly lighter than its pilot during its record setting trip, though I can't confirm the pilot's exact weight. Still, this ...
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Angle of attack on variable pitch propeller?
For a variable pitch propeller where the angle of attack can be adjusted during flight, are the individual blades similar in design to standard propellers, with a low angle of attack at the edge of ...
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