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ASPEN going in this January ...
My question is about the pitch indication on the ASPEN.
Cherokees normally have about a 5deg nose up (I measured ours) pitch on the ground, when oleos are set to spec. I have always set my pitch indication on the analog AI to exactly that, when on the ground. That is not how folks are generally taught to do it, but doing otherwise makes no sense to me. You can get away with setting the pitch to zero on the ground in a Cessna, as you almost are zero pitch, but not in our birds.
When in level cruise, you are normally a bit nose up pitch, from 2 to 4 deg, depending on weight and speed. Given the way I set it on the ground, my analog AI properly reflects this, and I have gotten used to, and use, the various expected pitch indications during the phases of flight.
So, now, what happens with the ASPEN?
When the plane is at cruise and level, as well as on the ground. What do you normally see?
It all relates as to whether the ASPEN truly shows the pitch, or does it actually show the velocity vector.
Pitch will be a bit positive at cruise, it has to be else you would be descending, the amount varying with weight and speed. (The angle of incidence of the wing can be largely ignored, as it is very small in a Cherokee)
But, in level cruise, the velocity vector will of course be zero, as you are neither descending or ascending.
The install manuals have a setup for leveling the plane, and zeroing the gauge, but not sure what it should show, when it is properly set up.
* Orest
My question is about the pitch indication on the ASPEN.
Cherokees normally have about a 5deg nose up (I measured ours) pitch on the ground, when oleos are set to spec. I have always set my pitch indication on the analog AI to exactly that, when on the ground. That is not how folks are generally taught to do it, but doing otherwise makes no sense to me. You can get away with setting the pitch to zero on the ground in a Cessna, as you almost are zero pitch, but not in our birds.
When in level cruise, you are normally a bit nose up pitch, from 2 to 4 deg, depending on weight and speed. Given the way I set it on the ground, my analog AI properly reflects this, and I have gotten used to, and use, the various expected pitch indications during the phases of flight.
So, now, what happens with the ASPEN?
When the plane is at cruise and level, as well as on the ground. What do you normally see?
It all relates as to whether the ASPEN truly shows the pitch, or does it actually show the velocity vector.
Pitch will be a bit positive at cruise, it has to be else you would be descending, the amount varying with weight and speed. (The angle of incidence of the wing can be largely ignored, as it is very small in a Cherokee)
But, in level cruise, the velocity vector will of course be zero, as you are neither descending or ascending.
The install manuals have a setup for leveling the plane, and zeroing the gauge, but not sure what it should show, when it is properly set up.
* Orest
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