It sucks, but which way?

[Hilton]

Hi,

Just to throw in a little humor here as the 'lift' thread heats up:

Assume you're gliding in a Piper Warrior or Archer doing 80 knots in no wind
conditions with the engine at idle. If you try open that little air vent on
the pilot's left, it is forcibly sucked outwards. Makes sense until you
think that the air outside is standing still while the air inside is doing
100 knots and should therefore have a lower pressure! :)

Hilton

[Hotel 179]

"Hilton" > wrote in message
k.net...
> Hi,
>
> Just to throw in a little humor here as the 'lift' thread heats up:
>
> Assume you're gliding in a Piper Warrior or Archer doing 80 knots in no
> wind
> conditions with the engine at idle. If you try open that little air vent
> on
> the pilot's left, it is forcibly sucked outwards. Makes sense until you
> think that the air outside is standing still while the air inside is doing
> 100 knots and should therefore have a lower pressure! :)
>
> Hilton
-----------------------------------reply------------------------------------------------

Hilton,

You have asked one of the easier questions related to pressure....it's the
dreaded merconian effect.

Gotta go fly,

Stephen

[Dan Luke]

"Hilton" wrote:
>
> Just to throw in a little humor here as the 'lift' thread heats up:
>
> Assume you're gliding in a Piper Warrior or Archer doing 80 knots in
> no wind
> conditions with the engine at idle. If you try open that little air
> vent on
> the pilot's left, it is forcibly sucked outwards. Makes sense until
> you
> think that the air outside is standing still while the air inside is
> doing
> 100 knots and should therefore have a lower pressure! :)

And if the pilot's pencil fell out of the visor, I guess they should be
slammed against the back of the cabin at 100 knots, right?

--
Dan
C172RG at BFM

[[email protected]]

If that was true....all engines with a carb would be falling out of the
sky and to the side of the road right now......

[Bob Chilcoat]

Aren't they? Every carburetor-equipped aircraft I ever saw came down
eventually.

--
Bob (Chief Pilot, White Knuckle Airways)


> wrote in message
oups.com...
> If that was true....all engines with a carb would be falling out of the
> sky and to the side of the road right now......
>