# Questions tagged [aerodynamics]

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51 views

### What is pitch stability in cars?

Can reduction in pitching moment of a car be referred to as improved pitch stability? Or is this term strictly only with regards to aircrafts?
48 views

### How to make a oblique wing without areodynamics skill?

Is it possible to make a oblique wing just by skewing a profile of a standard wing? Take a wing profile from web Divide it in sagittal slices Move slices along a new axis (still lying on horizontal ...
55 views

### Does the shape of a car really matter for how much gasoline it drinks?

Let's say that we have a mid-1950s "gas guzzler". Now, we take away the exterior "shell"/chassis and replace it with a modern car's. That is, it will visually look just like a modern car from the ...
31 views

### Does a V shape of quadcopter rotors give stability?

If I build a quad copter but angle each rotor slightly inwards, should it be self stabilizing like an aeroplane with V wings, or does a variation of the rocket pendulum fallacy apply here? I feel like ...
35 views

### How far downwind of a Covid-19 emitter has a 1000-fold reduction in PPM?

How far downwind of a Covid-19 emitter has a 1000-fold reduction in PPM? Assuming that Covid-19 (0.12μm diameter) particles have the aerodynamic properties of a gas: Particles < 20 μm behave same ...
44 views

### Aerodynamics - How can you solve for mass when velocity & chord are not given?

My prof is the type who makes up his own questions (rather than pulling them from textbooks). This is his latest work... Anyone got any ideas on how to solve this? He assures me that you don't need ...
25 views

### How do I calculate the forces on a glider's foundation?

I want to calculate the forces applied on a bar holding the wings, and there is a load connected to the middle of the bar. My question is, how are the forces act on the bar, supposed the wings are ...
262 views

### Aerodynamical forces - downforce

I have heard that car weight (for more friction = more stability and higher traction) is being increased when driving by a force called aerodynamic down-force which causes additional force on the car ...
38 views

### Stagnation,static and dynamic pressures

Please can someone help out with the actual concept of stagnation,static and dynamic pressures . I have learnt all that stagnation pressure is when velocity of flow is 0 when isentropically stopped ...
29 views

### Efficiency of propeller with Wind perpendicular to rotation axis

What happens to air flow and propeller efficiency if it is moving with Wind perpendicular to rotation axis. The air is blowing in a direction lying on the Planet of the tips.
24 views

### What determines if a shockwave is normal or oblique

So I am studying Gas dynamics and I know the math regarding Normal and Oblique shockwaves, but I am not sure why would one occur and not the other. Is there a rule when normal shocks will occur or ...