Fuel Vent Location - Why?

tmbg · Post by **tmbg** » Tue Jan 29, 2008 4:53 pm

Centrifugal force is a term which may refer to two different forces which are related to rotation. Both of them are oriented away from the axis of rotation, but the object on which they are exerted differs. Force which is oriented toward the axis of rotation is called a centripetal force.

"Centrifugal force" is the "local gravity" in our airplane, which should be straight down relative to your butt in a coordinated turn. Centripetal force is the force pulling the airplane around the turn.

tmbg · Post by **tmbg** » Tue Jan 29, 2008 4:55 pm

rv8or · Post by **rv8or** » Tue Jan 29, 2008 5:39 pm

Yes! Ian, where did you find that? I was looking for it everywhere... can't remember if that's the exact one, but I've seen one like it, that's for sure:lol:

Joe

rv8or · Post by **rv8or** » Tue Jan 29, 2008 5:47 pm

[quote="ptrotter"]Joe,

Sorry, I don't agree.

Centripetal force is the force that pushes the object outward. That is the force that keeps the water in the glass. Centrifugal force is the force that the outward moving object pulls on the axis.

If you swing a weight on a string, centripetal force pushes the weight out. You feel the centrifugal force pulling on your hand.

The forces are opposite and equal.

Huh?

I have extreme tired head now, so I give up. Fiberglassing tips is more fun than THIS!

Joe

tmbg · Post by **tmbg** » Tue Jan 29, 2008 5:58 pm

fugal and petal are opposite forces.

centripetal is the force which translates linear momentum into angular momentum; it's the string, it pulls the object around the turn. Centrifugal is the force opposite centripetal, pulling the weight away from the center, keeping the string taught, pushing your butt into the seat in a 2G turn, etc.

JohnR · Post by **JohnR** » Tue Jan 29, 2008 7:51 pm

Bob Barrett · Post by **Bob Barrett** » Tue Jan 29, 2008 8:43 pm

During Airadeventure 2005, I was POP(Protect Our Planes) volunteer and I was assigned to work the RV section. Shortly after the fuel truck made its rounds I was summoned to an RV that had gasoline draing out of the right tank vent. I verified that it was gas coming from the vent and explained that it was simply expansion at work on a hot day. I believe it was 95 degrees that day. It soon quit but to bad to wast expensive gas and contaminate the soil.

aparchment · Post by **aparchment** » Tue Jan 29, 2008 10:25 pm

mea culpa, mea culpa, mea maxima culpa.

How was I to know?

Thanks guys.

captain_john · Post by **captain_john** » Wed Jan 30, 2008 6:00 am

Bob Barrett wrote:During Airadeventure 2005, I was POP(Protect Our Planes) volunteer and I was assigned to work the RV section. Shortly after the fuel truck made its rounds I was summoned to an RV that had gasoline draing out of the right tank vent. I verified that it was gas coming from the vent and explained that it was simply expansion at work on a hot day. I believe it was 95 degrees that day. It soon quit but to bad to wast expensive gas and contaminate the soil.

Yes Bob. Especially at these prices. I am sure that guy still had air trapped in the tanks to boot.

Most of us have built our own tanks. They say to fill them slowly so the fuel can drain through all the ribs and make it's way to the root and fill them all completely.

If I were doing my tanks again, I would drill purge holes in the tops of all my ribs so they could burp better than without the hole. Sure, there is the hole for the vent line, but to have another one likely wouldn't hurt anything.

CJ

dons · Post by **dons** » Wed Jan 30, 2008 2:12 pm

JohnR wrote:

I'm with you on this one.

captain_john · Post by **captain_john** » Wed Jan 30, 2008 8:56 pm

Soooo, ummmmm...

If I am inverted on final approach, and I put gear down... am I really putting gear DOWN?

CJ

TomNativeNewYorker · Post by **TomNativeNewYorker** » Wed Jan 30, 2008 10:58 pm

It depends if you are north or south of the equator.

aparchment · Post by **aparchment** » Wed Jan 30, 2008 11:22 pm

Charlie: So if you were in a 5G negative dive on final, how did you put your gear down.

Johnny S (aka "Maverick"): I was inverted.

Thermos: *cough*bullsh*t*cough*

RivetBangers.com

Fuel Vent Location - Why?

ay caramba

do some of that pilot sh*t mav