- #1
Melissa P
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- TL;DR Summary
- Hi!
I´m going to calculate the Mean Aerodynamics Chord MAC but I need the distance of the line in red
How can I calculate?
Please!
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- Thread starter Melissa P
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In summary, Melissa needs to find the distance to calculate the Mean Aerodynamics Chord (MAC) for a wing. The red line in the diagram is not enough information, but the blue line can be used. It is suggested to use a geometric method by finding the centroid of each section of the half-wing to calculate the overall MAC.
- #2
berkeman
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Welcome to PhysicsForums. 
Is that wing from a particular aircraft? If so, you can probably find the dimensions online somewhere.
Is this question for schoolwork? If so what is the full problem statement. If not, what is the application?
Is that wing from a particular aircraft? If so, you can probably find the dimensions online somewhere.
Is this question for schoolwork? If so what is the full problem statement. If not, what is the application?
- #3
Melissa P
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no,I should find this distanceberkeman said:Welcome to PhysicsForums.
Is that wing from a particular aircraft? If so, you can probably find the dimensions online somewhere.
Is this question for schoolwork? If so what is the full problem statement. If not, what is the application?
The values aren´t real. Geometry should be used
This is a example for a wing.But,I need that distance to solve the MAC
- #4
DaveC426913
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There are quite a few red lines in that diagram.Melissa P said:
Are you referring to the one labelled cuerda de raiz fisica?
Alternately, is it possible you need to find the length of the line in blue?
Last edited:
- #5
mfb
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There is not enough information to find the length of the "cuerda de raiz fisica" line, but there is enough information to find the length of the blue line. Drawing a vertical line down from its left end can help.
- #6
Lnewqban
Homework Helper
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Welcome, Melissa!Melissa P said:
There is a geometric method that you could use, first locating the centroid of each section of the half-wing, where the MAC of each section is located at, then finding the MAC that is equivalent for the whole half-wing.
Please, see this example:
https://www.rcuniverse.com/forum/9511096-post34.html
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