Y tail angle

[Carlos Trigo]

Guys

I am building the XENOS tail, and to install the Total Energy multi-function probe I need to know the angle that the tail surfaces make with the horizontal plane.
Does anybody know this angle?
Is it around 45º?

Thanks
Carlos

[XenosN42]

I installed my total energy probe as shown in this image of the last rib on the stabilator:

Installed this way the probe points directly into the airflow. I don't know the angle the tail surface makes with the horizontal plane, but I don't think it makes a difference. Just install as the image shows and you'll be great to go.

[Carlos Trigo]

Hi Xenos42

Thanks for your answer and the picture of your installation.

The manufacturer of the multi-function (pitot + static + TE) probe recommends to install the probe and its adapter with the 3 pressure ports in a vertical position, pointing upwards.
That’s the reason I want to install the adapter in the same place you installed yours, but with the barbed ports (3 in my case) clocking vertically when the tail surface is installed in its Y angled position.

Carlos

[Area 51%]

If the Xenos is the same as the Waiex, the stabilizers are 35deg from horizontal. If you have the Y fitting that attaches to the tail post, you can get your information from that.

[Bryan Cotton]

The 3 view on the plans is a good place to measure the angle. The plans are drawn in AutoCAD so the picture is accurate. I measured it once for my Waiex but don't know the number, but of course Randy just gave it.

[Carlos Trigo]

Thanks guys

Carlos


Enviado do meu iPhone usando o Tapatalk

[Carlos Trigo]

Following Bryan’s suggestion, I measured the angle in the 3-view drawing, and it gave me 38º

Carlos

[Area 51%]

Not that 3deg is a lot, but just out of curiosity, did you measure the angle of the front spar on the print, or the rear? And on what page?
The reason I ask is I just measured the angles on my Waiex print (page T-07) and got two different readings. The rear Y came to 110deg. The front (hockey sticks) showed 104-105ish. Take those, subtract from 180, divide by two, and you get both answers. 35 and 38.

Now, I don't believe there is a twist built into the tail. What I do believe is the picture of the front attach point on T-07 is more of a rendering than a print. I think the amount that the hockey sticks angle rearward causes an "apparent" angle on that page.

For what it's worth, when I gave the 35deg measurement, it was on the airplane with a digital level.

On the other hand....the Xenos might be different.

Bored and curious here @Area 51%

[Carlos Trigo]

Hello Area51%

I measured it on page XNS-B01, but in fact these 3 degrees are not relevant for this case.

So, thanks anyway

Cheers
Carlos

[racaldwell]

Carlos,

I guess you have a fixed probe? I just thought they were all like the one I bought, it is removable. I am thinking it can be clocked in any way. I remember it has o-rings on the end but don't remember if was keyed. It's been too many years since working on the tail. I haven't looked at the probe since then.

Rick Caldwell
Xenos 0057