How does a Prop Governor work?

[Felix]

Hi,

I was wondering if anyone can explain exactly how a prop governor
works for a constant speed prop system? All I know is that the engine
Oil pushes a piston in the prop hub that twists the prop to the
appropriate angle.

Thanks,
Felix

[Eduardo Kaftanski]

In article >,
Felix > wrote:
>Hi,
>
>I was wondering if anyone can explain exactly how a prop governor
>works for a constant speed prop system? All I know is that the engine
>Oil pushes a piston in the prop hub that twists the prop to the
>appropriate angle.

most governors work the same way... rotation moves a set of weights
that move a valve that lets oil through.

in case of a single engine plane prop, the governor lets more oil through
as the RPMS go up to rotate the blades and increase pitch.


--
Eduardo Kaftanski |
| Freedom's just another word
http://e.nn.cl | for nothing left to loose.
|

['Vejita' S. Cousin]

In article >,
>I was wondering if anyone can explain exactly how a prop governor
>works for a constant speed prop system? All I know is that the engine
>Oil pushes a piston in the prop hub that twists the prop to the
>appropriate angle.

Go to http://www.avweb.com/news/columns/182146-1.html and take a look
at the Engine-Related Columns (scroll down some they are on the right hand
side). Esp these four:

Pelican's Perch #15: Manifold Pressure Sucks!
Pelican's Perch #16: Those Marvelous Props
Pelican's Perch #18: Mixture Magic
Pelican's Perch #19: Putting It All Together

They pretty much cover the subject of how engines, the throttle/MP, props,
and mixture work. I found them very helpful when I was a student.

[[email protected]]

On 4 Sep 2004 10:45:41 -0700, (Felix) wrote:

http://www.thaitechnics.com/propeller/prop_control.html

Good governor description, the propeller designs shown are kind of
dated. Most modern props use either a spring assembly or a air-charged
piston/spring combination to oppose the "governed" oil pressure
deliverd to the propeller.

TC


>Hi,
>
>I was wondering if anyone can explain exactly how a prop governor
>works for a constant speed prop system? All I know is that the engine
>Oil pushes a piston in the prop hub that twists the prop to the
>appropriate angle.
>
>Thanks,
>Felix

[Doug Vetter]

Felix wrote:
> Hi,
>
> I was wondering if anyone can explain exactly how a prop governor
> works for a constant speed prop system? All I know is that the engine
> Oil pushes a piston in the prop hub that twists the prop to the
> appropriate angle.
>
> Thanks,
> Felix

The other links mentioned in this thread will tell you the whole story.
If you want a closeup of what the weights look like and a brief
explanation of how they fit into the grand scheme, take a look at ours...

Go to my site and click through

Aviation -> Articles -> Maintenance -> Annual 2003 Part 3

and scroll down to the bottom.

-Doug

--
--------------------
Doug Vetter, CFIMEIA

http://www.dvcfi.com
--------------------