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Author Topic: Horizontal Tail Drawing  (Read 296 times)

Offline ironnerd

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Horizontal Tail Drawing
« on: May 28, 2025, 05:07:17 PM »
Is the LEUL Horizontal Tail drawing correct and accurate?

I am tinkering about with CAD and thought drawing the LE would be a pretty good exercise and help me understand the plane a bit better. I got to the horizontal and ran into an issue. When I draw the tail using the dimensions from the drawing, it does NOT look right. Like really wonky.
“I fly because it releases my mind from the tyranny of petty things.”
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Offline ironnerd

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Re: Horizontal Tail Drawing
« Reply #1 on: May 29, 2025, 05:57:29 AM »
sigh... ya'll are going to make me post pictures, aren't you?
“I fly because it releases my mind from the tyranny of petty things.”
– Antoine de Saint-Exupery

Offline jrbirdman47

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Re: Horizontal Tail Drawing
« Reply #2 on: May 29, 2025, 10:25:25 AM »
Well.....Wonky is interesting, so , yes!

Offline ironnerd

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Re: Horizontal Tail Drawing
« Reply #3 on: May 30, 2025, 07:38:41 AM »
Okay, after a quick bit of work in a free 2D CAD (LibriCAD)

In the middle we have the original drawing.
On the left we have the CAD version of the Horizontal Tail using the dimensions given in the plans.
On the right we have the CAD version of the Horizontal Tail using dimensions taken from measuring the drawing.

LEXL Horiz Tail Dwg by Iron Nerd, on Flic
“I fly because it releases my mind from the tyranny of petty things.”
– Antoine de Saint-Exupery

Offline Kamcoman77

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Re: Horizontal Tail Drawing
« Reply #4 on: May 30, 2025, 01:58:36 PM »
The plans are not scale drawings. Measuring them will lead to frustration. I used the dimensions listed on my XL plans (similar) and my tailfeathers look fine.

Offline ironnerd

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Re: Horizontal Tail Drawing
« Reply #5 on: May 30, 2025, 04:53:30 PM »
Thank-you @Kamcoman77.

I don't have any issues with the dims in the drawing, it just cam out looking really different so I wanted to make sure I was doing things correctly.

Mostly, the CAD files will be used to help set up the tooling I will use.

I work in an airplane factory. Part of my job revolves around writing work instructions and getting tools made. It's possible I have been somewhat spoiled by 3D CATIA drawings. Which is, of course, one of the reasons I am drawn to the LEUL.
“I fly because it releases my mind from the tyranny of petty things.”
– Antoine de Saint-Exupery

 

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