Pitot tube on Piper Archers

panampilot · June 16th, 2002, 01:07

No one can seem to give me a straight response on this question. On the Archer there is a pitot mast that comes down from the left wing. The front hole is obviously where the ram air is received. There are two more holes on the mast that I can't figure out. One is at the bottom and one is on the backside of the mast. I imagine one is a drain hole and the other is the static port but again I can't get a straight answer. There are no static ports found on the aircraft so I know one has to be the static port. Any help would be appreciated. [img]/ubbthreads/images/icons/confused.gif[/img]

Doug Taylor · June 16th, 2002, 01:18

Well that sounds good to me, but I think the Cherokees/Archers had static ports on the aft fuselage area. I'm not too sure!

WillNotFly4Food · June 16th, 2002, 02:13

That'd be it! On the Arrow the static ports are on both sides of the fuselage, aft. That's how it is on the new Arrows, I'll have to look at an old one. Funny thing is the mast still has the static port in the back of it but they decided to stick the ports on the fuselage. I'm sure they have their reasons... anyone know why?

Eagle · June 16th, 2002, 03:08

the hole ont the back/bottom of the blade is a drain for fluid in the ram air line.

FlyChicaga · June 16th, 2002, 19:06

The hole on the back is the static port. The whole on the bottom is the drain hole. On the Arrow, you'll find the static ports as noted above on the rear fuselage. However, if you look at the pitot tube, it still has the hole for the static port on it. Just so they manufacturered them all the same I guess.

panampilot · June 16th, 2002, 23:44

Thanks a lot for your help. I noticed that the Arrow has the same tube but the static ports are still on the side of the plane. That's cleared some confusion up.

dakovich · July 21st, 2002, 20:19

some of our new archers have both aft fuselage static as well as the mast static.

FlyChicaga · July 21st, 2002, 21:25

Did your school just purchase them? Maybe Piper is changing the way they are making the system.

dakovich · July 22nd, 2002, 08:44

its panam so the oldest plane is maybe 2 years old. i think the side fuse. static ports are probably an upgrade or something. because some of the new ones have it, and some don't. i know a few of the planes were bought post 9-11, they were canceled orders so we got a good deal or something and they have some extra goodies.

chunk75 · December 6th, 2002, 13:15

Actually, the bottom hole is connected to the rear hole. It isn't a drain, it's to provide true static pressure in high AoA situations (so any errant ram air entering the bottome port doesn't effect the static pressure)

Chunk

CaliforniaSurfer · December 6th, 2002, 14:16

Are you sure about that chunker? If that is true, where is the drain hole for the pitot tube.

On our school's Arrow IV, the static port if on the aft side of the pitot tube and is the size of a pinhole...I mean, it's really small. The hole on the bottom is the drain hole.

Surf

chunk75 · December 6th, 2002, 21:49

I'm about positive. Checked with a few folks about it tonight and I received three answers in the affirmative.

FlyChicaga · December 7th, 2002, 06:19

Actually, it is a drain hole. Static pressure will not be affected at high AOA on that tube. Look at the Piper Arrow III. It has static ports on the fuselage, back by the empenage. However, they used the same pitot/static tube as in the Archer III series, since it had the drain hole.

ananoman · December 7th, 2002, 11:56

On Cherokees the static pressure is taken from the back and the bottom hole, they are connected. There is no drain hole, the drain is located inside the cockpit on the left side wall. If you don't believe us, go out at night with a flashlight and shine it in the bottom hole, or just blow in the bottom hole. The Arrow uses the same pitot/static mast, but has separate static ports on the rear of the fuselage, one on each side.

chunk75 · December 7th, 2002, 16:06

Fair enough....we're both right!

averyrm · December 7th, 2002, 17:05

Just an offshoot about that style of piper pitot/static tube - it is on some arrows, and be sure to turn the heat on well before any chance of encountering ice. I don't know if it was just our particular aircraft but even with the heat on for a long duration a slight encounter with ice would almost certainly lead to a pitot/static failure. Fortunately we had alt. air which added a nice safety backup.

June 16th, 2002, 01:07	#1
panampilot Junior Member Join Date: Jun 2002 Location: Phoenix, AZ Posts: 148	Pitot tube on Piper Archers No one can seem to give me a straight response on this question. On the Archer there is a pitot mast that comes down from the left wing. The front hole is obviously where the ram air is received. There are two more holes on the mast that I can't figure out. One is at the bottom and one is on the backside of the mast. I imagine one is a drain hole and the other is the static port but again I can't get a straight answer. There are no static ports found on the aircraft so I know one has to be the static port. Any help would be appreciated. [img]/ubbthreads/images/icons/confused.gif[/img]

June 16th, 2002, 01:18	#2
Doug Taylor Agent Smith Join Date: Dec 1969 Location: KSDL Posts: 41,186 Blog Entries: 1	Re: Pitot tube on Piper Archers Well that sounds good to me, but I think the Cherokees/Archers had static ports on the aft fuselage area. I'm not too sure!

June 16th, 2002, 02:13	#3
WillNotFly4Food Senior Member Join Date: Dec 2000 Location: SGU via SLC Posts: 420	Re: Pitot tube on Piper Archers That'd be it! On the Arrow the static ports are on both sides of the fuselage, aft. That's how it is on the new Arrows, I'll have to look at an old one. Funny thing is the mast still has the static port in the back of it but they decided to stick the ports on the fuselage. I'm sure they have their reasons... anyone know why?

June 16th, 2002, 03:08	#4
Eagle Banned Join Date: Oct 2000 Posts: 1,272	Re: Pitot tube on Piper Archers the hole ont the back/bottom of the blade is a drain for fluid in the ram air line.

June 16th, 2002, 19:06	#5
FlyChicaga Old Skool Join Date: Dec 2001 Location: Chicago, IL Posts: 4,833	Re: Pitot tube on Piper Archers The hole on the back is the static port. The whole on the bottom is the drain hole. On the Arrow, you'll find the static ports as noted above on the rear fuselage. However, if you look at the pitot tube, it still has the hole for the static port on it. Just so they manufacturered them all the same I guess.

June 16th, 2002, 23:44	#6
panampilot Junior Member Join Date: Jun 2002 Location: Phoenix, AZ Posts: 148	Re: Pitot tube on Piper Archers Thanks a lot for your help. I noticed that the Arrow has the same tube but the static ports are still on the side of the plane. That's cleared some confusion up.

July 21st, 2002, 20:19	#7
dakovich Senior Member Join Date: Jul 2001 Location: Buffalo, NY Posts: 1,032	Re: Pitot tube on Piper Archers some of our new archers have both aft fuselage static as well as the mast static.

July 21st, 2002, 21:25	#8
FlyChicaga Old Skool Join Date: Dec 2001 Location: Chicago, IL Posts: 4,833	Re: Pitot tube on Piper Archers Did your school just purchase them? Maybe Piper is changing the way they are making the system.

July 22nd, 2002, 08:44	#9
dakovich Senior Member Join Date: Jul 2001 Location: Buffalo, NY Posts: 1,032	Re: Pitot tube on Piper Archers its panam so the oldest plane is maybe 2 years old. i think the side fuse. static ports are probably an upgrade or something. because some of the new ones have it, and some don't. i know a few of the planes were bought post 9-11, they were canceled orders so we got a good deal or something and they have some extra goodies.

December 6th, 2002, 13:15	#10
chunk75 Senior Member Join Date: Jul 2001 Location: FL Posts: 922	Re: Pitot tube on Piper Archers Actually, the bottom hole is connected to the rear hole. It isn't a drain, it's to provide true static pressure in high AoA situations (so any errant ram air entering the bottome port doesn't effect the static pressure) Chunk

December 6th, 2002, 14:16	#11
CaliforniaSurfer Junior Member Join Date: Sep 2000 Location: SoCal Posts: 296	Re: Pitot tube on Piper Archers Are you sure about that chunker? If that is true, where is the drain hole for the pitot tube. On our school's Arrow IV, the static port if on the aft side of the pitot tube and is the size of a pinhole...I mean, it's really small. The hole on the bottom is the drain hole. Surf

December 6th, 2002, 21:49	#12
chunk75 Senior Member Join Date: Jul 2001 Location: FL Posts: 922	Re: Pitot tube on Piper Archers I'm about positive. Checked with a few folks about it tonight and I received three answers in the affirmative.

December 7th, 2002, 06:19	#13
FlyChicaga Old Skool Join Date: Dec 2001 Location: Chicago, IL Posts: 4,833	Re: Pitot tube on Piper Archers Actually, it is a drain hole. Static pressure will not be affected at high AOA on that tube. Look at the Piper Arrow III. It has static ports on the fuselage, back by the empenage. However, they used the same pitot/static tube as in the Archer III series, since it had the drain hole.

December 7th, 2002, 11:56	#14
ananoman Senior Member Join Date: Dec 2002 Posts: 916	Re: Pitot tube on Piper Archers On Cherokees the static pressure is taken from the back and the bottom hole, they are connected. There is no drain hole, the drain is located inside the cockpit on the left side wall. If you don't believe us, go out at night with a flashlight and shine it in the bottom hole, or just blow in the bottom hole. The Arrow uses the same pitot/static mast, but has separate static ports on the rear of the fuselage, one on each side.

December 7th, 2002, 16:06	#15
chunk75 Senior Member Join Date: Jul 2001 Location: FL Posts: 922	Re: Pitot tube on Piper Archers Fair enough....we're both right!

December 7th, 2002, 17:05	#16
averyrm Old Skool Join Date: May 2002 Location: LCK Posts: 1,653	Re: Pitot tube on Piper Archers Just an offshoot about that style of piper pitot/static tube - it is on some arrows, and be sure to turn the heat on well before any chance of encountering ice. I don't know if it was just our particular aircraft but even with the heat on for a long duration a slight encounter with ice would almost certainly lead to a pitot/static failure. Fortunately we had alt. air which added a nice safety backup.

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