All Questions
Tagged with aerospace-engineering pressure
9
questions
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Fuel cell power output
I've spent innumerable time over the years looking for commercially available hydrogen / oxygen fuel cells that might actually be usable in one project concept or another. The best I've ever managed ...
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votes
1
answer
30
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Saturation of penetration length using Lucas-Washburn equation
The Washburn equation for capillary flow provides the following expression for the calculation of the penetration depth (or capillary rise):
$L \propto \sqrt(t)$
My question is when t goes to infinity,...
- 151
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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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What aerodynamic equation should be used to determine the drop in air pressure over an airfoil embedded within a vertical pipe?
I have a conceptual idea for a thruster for a VTOL aircraft/drone which should produce lift by utilizing a upward-flowing airflow to produce low air pressure over the top surface of an airfoil that is ...
- 303
3
votes
1
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Difference between pressure suits and anti-g suits
This question might come across as a newbie one but are pressure suits and anti-g suits are two names for the same thing? Google didn't turn up differences between them specifically (if there is any), ...
- 33
1
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1
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Propeller design
I see on internet, that aircraft propellers most effective blades angle only 15 degrees on every blade. Why propellers not use 45 degrees angle on propeller's blade that give more thrust on the ...
- 21
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Triple point storage in space travel
Watching Apollo 13 and rereading Lost Moon, Jim Lovell's exciting recollection of the events on the crippled spaceship, I began to wonder. Why does NASA maintain the gasses at the triple point? A ...
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Alternatives to shimming valve springs
Generally, in a pressure drop control valve that uses a piston and a spring (for example, in jet engines to control fuel flow), there is always potential for error in terms of the height of the spring....
- 117
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Chamber Wall Thickness for Liquid Fuel Rocket
In, How to Design, Build, and Test Small Liquid-Fuel Rocket Engines, by Krzycki, page 18 has the following equation:
$$t_w = \dfrac{PD}{16000}$$
Assuming the following:
Pressure ($P$) in combustion ...
- 1