why my plane stalls

[Grandss]

Ok if someone could explain me that, I will be very happy

I have a simulator, if i pitch up OK, but if I pitch down, my plane
stalls and i don't understand why.

thank's

[Ron Garret]

In article >, Grandss <grandss@nospam> wrote:

> Ok if someone could explain me that, I will be very happy
>
> I have a simulator, if i pitch up OK, but if I pitch down, my plane
> stalls and i don't understand why.

Your simulator is broken (or you have not described the situation
accurately).

rg

[Gary Drescher]

"Grandss" <grandss@nospam> wrote in message ...
> Ok if someone could explain me that, I will be very happy
>
> I have a simulator, if i pitch up OK, but if I pitch down, my plane stalls
> and i don't understand why.

It should be just the opposite: pitching up too far can cause a stall, but
pitching down is supposed to *recover* from a stall.

So there are two possibilities. Either the simulator is flawed, or else
you're mistaken to think that the plane is stalling when you pitch down. Can
you tell us exactly what the plane does that leads you to conclude that it
is stalling?

--Gary

[Andrew Gideon]

Grandss wrote:

> I have a simulator, if i pitch up OK, but if I pitch down, my plane
> stalls and i don't understand why.

You're inverted.

- Andrew

[Grandss]

Gary Drescher a écrit :
> "Grandss" <grandss@nospam> wrote in message ...
>
>>Ok if someone could explain me that, I will be very happy
>>
>>I have a simulator, if i pitch up OK, but if I pitch down, my plane stalls
>>and i don't understand why.
>
>
> It should be just the opposite: pitching up too far can cause a stall, but
> pitching down is supposed to *recover* from a stall.
>
> So there are two possibilities. Either the simulator is flawed, or else
> you're mistaken to think that the plane is stalling when you pitch down. Can
> you tell us exactly what the plane does that leads you to conclude that it
> is stalling?
>
> --Gary
>
>
Hi,

plane stalls really when i pitch down.
I'm not sure to know exactly how it have been determined but i try to
explain.
A plane stalls in my case if liftcoefficent for a cambered airfoil with
a plan trailing edge flap is equals to zero.
Flaps to calc. liftcoefficient are landing flaps and ailerons.

[TripFarmer]

Bottle to Throttle..........8 hours.


In article >, grandss@nospam says...
>
>Ok if someone could explain me that, I will be very happy
>
>I have a simulator, if i pitch up OK, but if I pitch down, my plane
>stalls and i don't understand why.
>
>thank's

[Dan Luke]

"TripFarmer" wrote:

> Bottle to Throttle..........8 hours.

hee-hee!

[george]

Grandss wrote:
> Gary Drescher a =E9crit :
> > "Grandss" <grandss@nospam> wrote in message ...
> >
> >>Ok if someone could explain me that, I will be very happy
> >>
> >>I have a simulator, if i pitch up OK, but if I pitch down, my plane sta=
lls
> >>and i don't understand why.
> >
> >
> > It should be just the opposite: pitching up too far can cause a stall, =
but
> > pitching down is supposed to *recover* from a stall.
> >
> > So there are two possibilities. Either the simulator is flawed, or else
> > you're mistaken to think that the plane is stalling when you pitch down=
.. Can
> > you tell us exactly what the plane does that leads you to conclude that=
it
> > is stalling?
> >
> > --Gary
> >
> >
> Hi,
>
> plane stalls really when i pitch down.
> I'm not sure to know exactly how it have been determined but i try to
> explain.
> A plane stalls in my case if liftcoefficent for a cambered airfoil with
> a plan trailing edge flap is equals to zero.
> Flaps to calc. liftcoefficient are landing flaps and ailerons.

Go to your local aero club or flying school.
Get into a REAL aeroplane with an instructor and find out what happens
when you pitch the nose down.
And don't use terms that you don't understand....

[Greg Farris]

In article >, grandss@nospam says...
>
>
>Ok if someone could explain me that, I will be very happy
>
>I have a simulator, if i pitch up OK, but if I pitch down, my plane
>stalls and i don't understand why.
>
>thank's


Please don't call it a plane.
Readers here may take it badly, present company included.

[[email protected]]

If you're on a simulator, maybe your joystick or yolk is set up
incorrectly? (pitch reversed).

As anyone on this group will tell you in an instant, stalling is not
about pitch *per se*, but angle of attack. That said, one pulls up to
case a stall, and pushes down to get out of one -- unless you're
inverted, or your controls are rigged backwards (which, unfortunately,
has been known to happen).


-- dave j

Grandss wrote:
> Ok if someone could explain me that, I will be very happy
>
> I have a simulator, if i pitch up OK, but if I pitch down, my plane
> stalls and i don't understand why.
>
> thank's

[Sylvain]

Greg Farris wrote:
Please don't call it a plane.
> Readers here may take it badly, present company included.
>

guys, give the man a break; he is apparently trying to
learn something, albeit from a rather original angle,
and his question is not (IMHO and all that) out of place
in this newsgroup.

I.e., put yourself in his shoes, and imagine that you would
like to learn how, say, a submarine works (I know nothing
about submarines, so that's what I picked to illustrate my
point); playing around with a submarine sim would not be
the silliest way to get started, would it? actually he doesn't
just 'play around with', but actually went further and looked
at the code and the physics involved, which is quite a bit
smarter. Then, the next step of asking questions to submariners
sounds reasonable to me; now, let's say that all submariners
newsgroups happen to be in Russian (a language which I don't
master, hence the choice to illustrate my point, not just
out of cheap irony), chances are that I would not make the
best choice of words.

let's not scare away a potential new recruit! :-)

--Sylvain

[Seth Masia]

If your yolk is set up incorrectly, you're bound to be scrambled.

Seth

> wrote in message
oups.com...
>
> If you're on a simulator, maybe your joystick or yolk is set up
> incorrectly? (pitch reversed).
>
> As anyone on this group will tell you in an instant, stalling is not
> about pitch *per se*, but angle of attack. That said, one pulls up to
> case a stall, and pushes down to get out of one -- unless you're
> inverted, or your controls are rigged backwards (which, unfortunately,
> has been known to happen).
>
>
> -- dave j
>
> Grandss wrote:
>> Ok if someone could explain me that, I will be very happy
>>
>> I have a simulator, if i pitch up OK, but if I pitch down, my plane
>> stalls and i don't understand why.
>>
>> thank's
>

[Capt. Geoffry Thorpe]

"Grandss" <grandss@nospam> wrote in message ...
>>> --Gary
>>
>>
> Hi,
>
> plane stalls really when i pitch down.
> I'm not sure to know exactly how it have been determined but i try to
> explain.
> A plane stalls in my case if liftcoefficent for a cambered airfoil with a
> plan trailing edge flap is equals to zero.
> Flaps to calc. liftcoefficient are landing flaps and ailerons.
>

At a low enough angle of atack (angle between the wing and the air flow)
lift will go to zero - is this what's happening?

At a high angle of atack (pitch up) when a wing "stalls" the lift is reduced
but does not generally go to zero while drag increases a lot.

--
Geoff
the sea hawk at wow way d0t com
remove spaces and make the obvious substitutions to reply by mail
Spell checking is left as an excercise for the reader.

[Seth Masia]

L'avion cale quand l'angle d'attaque est trop haut -- c'est-à-dire, quand le
nez monte et l'avion ralentit à la vitesse de stalle, au sujet de 90kph pour
la plupart des avions de moteur simple. La mise du nez vers le bas ne lui
fait pas la stalle: elle fait l'avion accélèrent par l'air. Voyez pour
l'explication http://pierre.rondel.free.fr/portance.htm

Seth
N8100R

"Grandss" <grandss@nospam> wrote in message ...
> Ok if someone could explain me that, I will be very happy
>
> I have a simulator, if i pitch up OK, but if I pitch down, my plane stalls
> and i don't understand why.
>
> thank's

[[email protected]]

Damn, that's my first USENET spelling snip in... well, a little while.

-- dave j

[Darrel Toepfer]

Grandss wrote:

> Ok if someone could explain me that, I will be very happy
>
> I have a simulator, if i pitch up OK, but if I pitch down, my plane
> stalls and i don't understand why.
>
> thank's

Your upside down, sky is blue, grass is green... Unless your over water
and then everything can be blue...

[Greg Farris]

In article >, says...
>
>
>Greg Farris wrote:
> Please don't call it a plane.
>> Readers here may take it badly, present company included.
>>
>
>guys, give the man a break; he is apparently trying to
>learn something, albeit from a rather original angle,
>and his question is not (IMHO and all that) out of place
>in this newsgroup.
>
>I.e., put yourself in his shoes, and imagine that you would
>like to learn how, say, a submarine works (I know nothing
>about submarines, so that's what I picked to illustrate my
>point); playing around with a submarine sim would not be
>the silliest way to get started, would it? actually he doesn't
>just 'play around with', but actually went further and looked
>at the code and the physics involved, which is quite a bit
>smarter. Then, the next step of asking questions to submariners
>sounds reasonable to me; now, let's say that all submariners
>newsgroups happen to be in Russian (a language which I don't
>master, hence the choice to illustrate my point, not just
>out of cheap irony), chances are that I would not make the
>best choice of words.
>


What goes down must come up . . .

Except of course Russian submarines ;-)

[Greg Farris]

In article om>,
says...
>
>
>
>Damn, that's my first USENET spelling snip in... well, a little while.
>
>-- dave j
>

How to make it climb : Set the mixer on HIGH and put the yolk in your
lap!

the wings are installed upside down?

"Andrew Gideon" > wrote in message
online.com...
> Grandss wrote:
>
>> I have a simulator, if i pitch up OK, but if I pitch down, my plane
>> stalls and i don't understand why.
>
> You're inverted.
>
> - Andrew
>

[Grandss]

a écrit :
> the wings are installed upside down?
>
> "Andrew Gideon" > wrote in message
> online.com...
>
>>Grandss wrote:
>>
>>
>>>I have a simulator, if i pitch up OK, but if I pitch down, my plane
>>>stalls and i don't understand why.
>>
>>You're inverted.
>>
>>- Andrew
>>
>
>
>
What do you want to say?

[N93332]

"Greg Farris" > wrote in message
...
> What goes down must come up . . .
>
> Except of course Russian submarines ;-)

There are more planes at the bottom of the ocean than subs in the sky...

[Ron Tock]

Grandss <grandss@nospam> wrote in message ...
> a écrit :
> > the wings are installed upside down?
> >
> > "Andrew Gideon" > wrote in message
> > online.com...
> >
> >>Grandss wrote:
> >>
> >>
> >>>I have a simulator, if i pitch up OK, but if I pitch down, my plane
> >>>stalls and i don't understand why.
> >>
> >>You're inverted.
> >>
> >>- Andrew
> >>
> >
> >
> >
> What do you want to say?

He said your airplane was upside down.

[Grandss]

Ron Tock a écrit :
> Grandss <grandss@nospam> wrote in message ...
>
a écrit :
>>
>>>the wings are installed upside down?
>>>
>>>"Andrew Gideon" > wrote in message
online.com...
>>>
>>>
>>>>Grandss wrote:
>>>>
>>>>
>>>>
>>>>>I have a simulator, if i pitch up OK, but if I pitch down, my plane
>>>>>stalls and i don't understand why.
>>>>
>>>>You're inverted.
>>>>
>>>>- Andrew
>>>>
>>>
>>>
>>>
>>What do you want to say?
>
>
> He said your airplane was upside down.
>
>
Ok, I try to check that.
It's possible because calculation are made in one coordinate system, and
render in another.

thanks