Expert Distance Assistance: Get Help with Calculating Distances Today!

[Melissa P]

TL;DR

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!

 

[berkeman]

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?

 

[Melissa P]

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?

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

 

[DaveC426913]

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?

 

[mfb]

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.

 

[Lnewqban]

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!
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