Solid tail fin for speed flying - HeliFreak
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Old 08-26-2011, 01:22 PM   #1 (permalink)
 
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Default Solid tail fin for speed flying

This should allow us to have the Tail Rotor at 0* pitch when we are doing speed passes.

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Old 08-26-2011, 03:02 PM   #2 (permalink)
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this is ugly but must be efficient !!
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Old 08-26-2011, 08:29 PM   #3 (permalink)
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If you would like I can try to draw up a tail fin similar to a gliders wing with lift in the right direction for you.

Mick
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Old 08-26-2011, 08:52 PM   #4 (permalink)
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It is a little rough but all I used was a hand drill, band saw, belt sander, and of course a sharpie

That's an interested thought Mick, I will have to think about that.
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Old 08-27-2011, 12:13 AM   #5 (permalink)
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I had to have a play with this.

The wing profile is a modified (thinned) RG15. over all length 240mm, centreline of boom to bottom of fin 180mm. width at boom 60mm.


Left hand side

right hand front isometric

looking up from the bottom

mounting holes (could be counterbored)


If you knew some one that can machine moulds they would be simple to make.

Mick
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Old 08-27-2011, 12:30 PM   #6 (permalink)
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Do you expect tail rotor drag to be that significant?
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Old 08-27-2011, 12:38 PM   #7 (permalink)
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It is more the drag of a heli flying slightly sideways with the heading lock fighting like a crazy thing trying to keep the heli side ways.

In rate mode the heli weather cocks to straight, if you can get the tail unloaded as much as possible it gives a little bit more back to the main rotor.

MIck
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Old 08-27-2011, 09:13 PM   #8 (permalink)
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Ah, I didn't realize you guys were using rate mode for speed runs.
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