On Wed, 2002-06-05 at 14:15, Christian Mayer wrote:
> Tony Peden wrote:
> >
> > > PS: As the air pressure curve is similar to the
> > > e-function (e^altitude)
> > > it's nowhere linear and thus badly approximated by a
> > > table...
> >
> > Depends on how many points are in the table.
>
> Yes.
Tony Peden wrote:
>
> > PS: As the air pressure curve is similar to the
> > e-function (e^altitude)
> > it's nowhere linear and thus badly approximated by a
> > table...
>
> Depends on how many points are in the table.
Yes. You can solve all problems with raw iron...
I don't know how feelable
--- Christian Mayer <[EMAIL PROTECTED]> wrote:
> David Megginson wrote:
> >
> > Christian Mayer writes:
> >
> > > As I wrote before, there's a function in the
> WeatherCM code that
> > > calculates the air pressure based on the air
> pressure at a given
> > > altitude and at a given teperatu
David Megginson wrote:
>
> Christian Mayer writes:
>
> > As I wrote before, there's a function in the WeatherCM code that
> > calculates the air pressure based on the air pressure at a given
> > altitude and at a given teperature profile. It is based on the well
> > known (but incorrect) bar
Andy Ross writes:
> Nonetheless, I think I found the problem. In converting the YASim
> table to the new format, its values were re-encoded as deltas from sea
> level conditions, with sea level pressure defined as 29.92 inches of
> mercury.
I've fixed that now -- everything is encoded as fa
Christian Mayer writes:
> As I wrote before, there's a function in the WeatherCM code that
> calculates the air pressure based on the air pressure at a given
> altitude and at a given teperature profile. It is based on the well
> known (but incorrect) baryometric (SP?) formula but doesn't suf
Andy Ross wrote:
>
> David Megginson wrote:
> > The idea is that users should be able to set any reasonable sea-level
> > pressure and see reasonable behaviour -- that's why I set the tables
> > up with deltas rather than absolute values. I can see, now, how that
> > would be a problem at higher
Andy Ross writes:
> Actually, I'm fairly certain that high altitude phenomena tend to
> "smooth out" pressure differences down below, so in fact the relative
> difference between pressures at the flight levels should actually be
> less than that at sea level. Maybe you could try a factor tha
David Megginson wrote:
> The idea is that users should be able to set any reasonable sea-level
> pressure and see reasonable behaviour -- that's why I set the tables
> up with deltas rather than absolute values. I can see, now, how that
> would be a problem at higher altitudes, but what should we
Andy Ross writes:
> Nonetheless, I think I found the problem. In converting the YASim
> table to the new format, its values were re-encoded as deltas from sea
> level conditions, with sea level pressure defined as 29.92 inches of
> mercury. But in the FGEnvironment constructor, I see the fo
10 matches
Mail list logo
