All Questions
Tagged with aerospace-engineering mechanical-engineering
75
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How do I learn about Rockets and planes?
I want to learn how to make aeroplanes and rocket, how they work, etc. I want to be able to make working models. How do I go about it, what books can i read, what videos can I watch for easy, clear ...
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Is front shroud more thick than the lower shroud used in impellers ? Thickness of shrouds of shrouded impellers used in turbo pumps of rocket engines
This is an impeller used in turbopumps for increasing the pressure of propellants to drive the rocket engines. I wanted to ask all the engineers currently working in manufacturing of these impellers ...
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How to modify a ball valve to make it cryogenic
I have designed a manual non-cryogenic ball valve in SolidWorks (based on this tutorial: https://www.youtube.com/watch?v=pYsU1gfx-00)
My aim is to modify this CAD design so that it becomes cryogenic (...
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1
answer
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Atomic weapon design book [closed]
I’m starting my degree in nuclear engineering in September and was wondering if anyone knew any good books for Atomic Weapon design please?
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39
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Improving a poorly designed project. Seed dispersal using a BLDC Turbine
I would like to get ideas on how a project of this sort can be improved.
The Project
A simple sphere of diameter 130mm that is split horizontally by a wall. The wall does not equally divide the sphere,...
user41949
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37
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Location of Reaction wheels in a cubesat
In a pyramid 4 reaction wheel configuration, where would you want to place the reaction wheels. I know that you would want them closer to the center of mass. If you were to place them in a CubeSat for ...
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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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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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111
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Why are stress intensity units MPa√m
The units of stress intensity are usually taken as MPa√m. Cracks are usually measured in (mm), could someone please explain why this convention is used an not consistent SI units
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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
answer
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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3
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"minimum gauge problem" or similar concept of a minimum material thickness as you scale down
I recall watching a show about an aeronautical engineering contest to build model-sized aircraft able to lift a set weight to a set altitude with the lightest possible aircraft. The program ...
- 101
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1
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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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33
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Confusion with Measuring Velocities in a Translating/Rotating Reference Frame: Combining Transport Theorem and Homogeneous Transformations
The inertial reference frame is denoted by $I$, the position, velocity, acceleration, angular velocity, and angular acceleration of reference frame $S$ is measured in the inertial frame, reference ...
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2
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Airflow visible over the airplane wing
What's that visible airflow over the airplane wing and what causes it?
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