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 suffer
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
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) baryometric
--- 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 teperature profile. It
is
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 the sudden
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. You can solve all
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
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 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
I wrote:
First, the air pressures returned from the environment system don't
agree with the standard atmosphere that YASim uses to do its
calibration
Heh, funny that. The new environment manager *is* using YASim's
numbers. :)
Nonetheless, I think I found the problem. In converting the
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