N6030X(at)DaveMorris.com
Guest
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 Posted: Fri Sep 22, 2006 6:01 am Post subject: Can someone share experience tuning static port? |
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Not necessarily. Here's one on a Mooney quite a bit back from the
leading edge of the wing.
http://www.davemorris.com/Photos/Mooney%20N6030X/Wing%20-%20Left%20Bottom.jpg
The static ports on this airplane are on the left and right rear
fuselage sides, tied together.
Dave Morris
At 08:36 AM 9/22/2006, you wrote:
| Quote: |
True. Just look at any spam can that has a pitot/static. They stick
out ahead of the leading edge. Not to far. Correct location is a no brainer.
Paul
==============
At 03:55 AM 9/22/2006, you wrote:
>
>
>If the static port was installed well away from the airframe, so it
>was actually sensing the free stream static pressure, if probably
>would be quite accurate. But, the original poster is putting the
>static port near the wing. Wings by design cause an increase in
>pressure below them, and a decrease in pressure above them. It is
>very difficult to find a location near a wing where a static port
>will read correctly over the whole range of airspeeds and flap
>angles. Thus the desire to tune the static port with O-rings.
>
>Kevin Horton
>On 21 Sep 2006, at 23:59, PWilson wrote:
>
>>
>>
>>My fluids book uses a static probe for wind tunnel testing that has
>>multiple holes. This allows the pitot/static unit to operate with
>>better accuracy at various angles to the wind stream. Like 10
>>holes. The book also specifies the diameter. No suggestion for o-
>>ring to be accurate.
>>Regards. Paul
>>================
>>
>>At 10:22 AM 9/20/2006, you wrote:
>>>
>>>
>>>I have a Europa XS Monowheel, it has the static port under the
>>>wing, it is
>>>a tube with a closed nylon bullet at the tip, and 2 holes in it a
>>>bit aft
>>>of the lead edge of the bullet, 1 vertical and 1 horizontal.
>>>
>>>I heard a while back you can tune this static port by installing a
>>>O-Ring,
>>>think start point was an inch or so behind the holes in the bullet??
>>>
>>>Can someone share experience tuning static port?
>>>
>>>How did you determine when it was correct?
>>>
>>>What distance was neutral point for O-Ring?
>>>
>>>Does moving O-Ring forward from neutral increase static pressure?
>>>
>>>What size O-Ring did you use, did size make much a difference,
>>>what was
>>>O-Ring made out of and how did you permanent bond in place?
>>>
>>>Thx.
>>>Ron Parigoris
>>>
>>>(I posted to Europa group, no replies)
>>>
>>>
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