Expert Distance Assistance: Get Help with Calculating Distances Today!

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The discussion focuses on calculating the Mean Aerodynamic Chord (MAC) for a wing, with participants seeking clarification on specific distances needed for the calculation. One user mentions that the values are not real and emphasizes the need for geometric methods to find the required distance. Suggestions include locating the centroid of each wing section to determine the overall MAC. The conversation highlights the importance of identifying the correct lines in the provided diagram for accurate calculations. Ultimately, geometric principles are essential for solving the MAC problem effectively.
Melissa P
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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!
borra.png
 
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Welcome to PhysicsForums. :smile:

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?
 
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berkeman said:
Welcome to PhysicsForums. :smile:

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?
no,I should find this distance
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
 
Melissa P said:
Summary:: Hi!

I´m going to calculate the Mean Aerodynamics Chord MAC but I need the distance of the line in red
There are quite a few red lines in that diagram.
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?
 
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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.
 
Melissa P said:
no,I should find this distance
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
Welcome, Melissa! :smile:
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

:cool:
 

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