Andy Ross wrote:
Melchior FRANZ wrote:
1. YASim delivers a positive /velocities/airspeed-kt on backward
flight.
This strikes me as correct behavior. If you stick a pitot tube
into an airstream backwards, you will get exactly the same
reading as forward (well, modulo viscosity and
Seems that there are two bugs that make the bo105 ASI show
positive speeds when flying backwards:
1. YASim delivers a positive /velocities/airspeed-kt on backward
flight.
2. Systems/pitot.cxx wouldn't handle negative values correctly,
anyway, as it squares the speed without checking for
On Mon, 17 Jul 2006, Melchior FRANZ wrote:
Seems that there are two bugs that make the bo105 ASI show
positive speeds when flying backwards:
1. YASim delivers a positive /velocities/airspeed-kt on backward
flight.
The second is easy to fix, but I have no idea about the first.
* Joacim Persson -- Monday 17 July 2006 10:00:
On Mon, 17 Jul 2006, Melchior FRANZ wrote:
1. YASim delivers a positive /velocities/airspeed-kt on backward
flight.
The second is easy to fix, but I have no idea about the first.
/orientation/side-slip-*
So, as you didn't bother to
Melchior
Seems that there are two bugs that make the bo105 ASI show
positive speeds when flying backwards:
1. YASim delivers a positive /velocities/airspeed-kt on backward
flight.
2. Systems/pitot.cxx wouldn't handle negative values correctly,
anyway, as it squares the speed
* Vivian Meazza -- Monday 17 July 2006 12:30:
Melchior
2. Systems/pitot.cxx wouldn't handle negative values correctly,
anyway, as it squares the speed without checking for negatives.
A pitot tube compares the pressure along the _forward_ axis of the tube,
I know, and this was not the
On Mon, 17 Jul 2006, Melchior FRANZ wrote:
/orientation/side-slip-*
So, as you didn't bother to write a whole sentence and leave the
interpretation to the reader, which I find quite annoying, is it
the following what you are trying to say: YASim is right, (airspeed-kt)
is *not* meant to be
* Vivian Meazza -- Monday 17 July 2006 12:30:
You need some other device to measure backward velocity.
I implemented a radar doppler based drift indicator already a few weeks
ago, thanks. But we are speaking about a display error in the ASI.
m.
Melchior FRANZ wrote:
1. YASim delivers a positive /velocities/airspeed-kt on backward
flight.
This strikes me as correct behavior. If you stick a pitot tube
into an airstream backwards, you will get exactly the same
reading as forward (well, modulo viscosity and mach effects). If
what you
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