Mxsmanic , IFR sensations, and some other stuff

BDS wrote:
There is an interesting article in Flying magazine by Peter Garrison that
talks about lift theory.

I thought that one of the most interesting points he made was that the
lift force generated by an airfoil is greater at the optimum angle of
attack than would be the force imparted to it if you were to move it
through the air perpendicular to the air flow at the same speed.

I first experienced this as a kid, sticking my hand out the car window with
the thumb as a leading edge, forming a crude airfoil.

When at the right shape and angle of attack, the lift is amazingly strong.
I always found it remarkable that when my hand was completely
perpendicular to the wind, the force didn't seem as strong.

Definitely a visceral lesson in lifting versus stalling.

wrote:
On May 21, 12:56 pm, Mxsmanic wrote:
Stealth Pilot writes:
aeroplanes fly because of lift generated by pressure differences on
the wing surfaces.
Airplanes fly because the wings divert the air through which they pass
downwards, creating a downwash and exerting a force in doing so that engenders
an opposite force that is lift.

So you're saying the sky does suck after all?

What about rocket propulsion in a vacuum? How does that work?

I've repeatedly explained to these guys that camber was just a
conspiracy by the aluminum industry to sell more metal.

I don't know why Boeing, Cessna, Piper, Beechcraft and everybody else
don't listen to Mxmaniac. CAMBER IS A LIE!!!

-c

On May 22, 11:51 am, gatt wrote:
wrote:
On May 21, 12:56 pm, Mxsmanic wrote:
Stealth Pilot writes:
aeroplanes fly because of lift generated by pressure differences on
the wing surfaces.
Airplanes fly because the wings divert the air through which they pass
downwards, creating a downwash and exerting a force in doing so that engenders
an opposite force that is lift.

So you're saying the sky does suck after all?

What about rocket propulsion in a vacuum? How does that work?

I've repeatedly explained to these guys that camber was just a
conspiracy by the aluminum industry to sell more metal.

I don't know why Boeing, Cessna, Piper, Beechcraft and everybody else
don't listen to Mxmaniac. CAMBER IS A LIE!!!

-c

No no, aluminium was a conspiracy by Westinghouse and Edison (and
proly Tesla too) to sell more electricity via the Bayer process! Or
was it the other way 'round? Westinghouse was a conspiracy by the
electricity conglomerates to produce more beer cans? Hmmm....let me
adjust my Reynolds Cap.

writes:

What about rocket propulsion in a vacuum? How does that work?

Simple action and reaction.

On May 22, 1:08 pm, Mxsmanic wrote:
writes:
What about rocket propulsion in a vacuum? How does that work?

Simple action and reaction.

Mmmm...but your action has nothing to react against, there's nothing
to push down on like you said with downwash producing lift for an
airplane wing.

On Wed, 21 May 2008 19:56:35 +0200, Mxsmanic
wrote:

Stealth Pilot writes:

aeroplanes fly because of lift generated by pressure differences on
the wing surfaces.

Airplanes fly because the wings divert the air through which they pass
downwards, creating a downwash and exerting a force in doing so that engenders
an opposite force that is lift.

... these pressure differences are caused by the shape
of the aerofoil of the wing ...

The air is diverted because the wing has a positve angle of attack. It can be
perfectly flat and it will still generate lift.

downwash occurs after the wing has passed. how does it transmit its
effect to the wing? magnetism?

On May 22, 8:20 am, Stealth Pilot
wrote:
On Wed, 21 May 2008 19:56:35 +0200, Mxsmanic
wrote:

Stealth Pilot writes:

aeroplanes fly because of lift generated by pressure differences on
the wing surfaces.

Airplanes fly because the wings divert the air through which they pass
downwards, creating a downwash and exerting a force in doing so that engenders
an opposite force that is lift.

... these pressure differences are caused by the shape
of the aerofoil of the wing ...

The air is diverted because the wing has a positve angle of attack. It can be
perfectly flat and it will still generate lift.

downwash occurs after the wing has passed. how does it transmit its
effect to the wing? magnetism?

Sorta. The girl lift fairies push from underneath whilst the boy lift
fairies pull from up top. The obese lift fairies just hang on and
thus produce drag.

wrote:
On May 22, 8:20 am, Stealth Pilot

downwash occurs after the wing has passed. how does it transmit its
effect to the wing? magnetism?

Sorta. The girl lift fairies push from underneath whilst the boy lift
fairies pull from up top. The obese lift fairies just hang on and
thus produce drag.

EXACTLY! GOD, somebody FINALLY nailed it. The ones that can't hang on
slam into the elevator and produce downwash.

-c

On May 23, 5:40*am, wrote:
On May 22, 8:20 am, Stealth Pilot
wrote:





On Wed, 21 May 2008 19:56:35 +0200, Mxsmanic
wrote:

Stealth Pilot writes:

aeroplanes fly because of lift generated by pressure differences on
the wing surfaces.

Airplanes fly because the wings divert the air through which they pass
downwards, creating a downwash and exerting a force in doing so that engenders
an opposite force that is lift.

... these pressure differences are caused by the shape
of the aerofoil of the wing ...

The air is diverted because the wing has a positve angle of attack. *It can be
perfectly flat and it will still generate lift.

downwash occurs after the wing has passed. how does it transmit its
effect to the wing? magnetism?

Sorta. *The girl lift fairies push from underneath whilst the boy lift
fairies pull from up top. *The obese lift fairies just hang on and
thus produce drag.- Hide quoted text -

No, there are no fat faries -fat faries would not be able to fly and
they would die. It's transvestite fairies that produce drag,

Cheers

Stealth Pilot writes:

downwash occurs after the wing has passed.

Downwash is the result of the wing's passing. The wing accelerates air above
it downwards. That downward movement continues after the wing has passed, and
it is called downwash. It is the acceleration that produces the downwash that
is responsible for lift.