There is a bug in JSBSim causing multiengine aircraft with counterrotating
props suffer from excessive yaw when engines are running. Significant aileron
deflection is required to fly straight and level.
I tracked down that issue and finally came to FGPropeller.cpp line 198:
vH(eX) =
On Tue 7 August 2007 17:57, Torsten Dreyer wrote:
There is a bug in JSBSim causing multiengine aircraft with counterrotating
props suffer from excessive yaw when engines are running. Significant
aileron deflection is required to fly straight and level.
I tracked down that issue and finally
On Tue 7 August 2007 18:20, gh.robin wrote:
On Tue 7 August 2007 17:57, Torsten Dreyer wrote:
There is a bug in JSBSim causing multiengine aircraft with
counterrotating props suffer from excessive yaw when engines are running.
Significant aileron deflection is required to fly straight and
There is a bug in JSBSim causing multiengine aircraft with
counterrotating props suffer from excessive yaw when engines
are running. Significant aileron deflection is required to
fly straight and level.
I tracked down that issue and finally came to FGPropeller.cpp
line 198:
If the rotational rates (returned by the function GetPQR()) are zero -
that is, at steady state - the angular momentum (vH) parameter will add
*nothing* to the total moment (vMn). The angular momentum introduces
gyroscopic effects.
If the effect is too strong, it could be that the Ixx value
May be i don't understand your remark, and i could be wrong,
but all aircraft propeller have not the same rotation direction ,
some are CCWon the same aircraft
some are CW on others aircraft.
Correct - and some aircraft have both of it: one CW and one CCW.
Sure there is no
On 8/7/07, Torsten Dreyer [EMAIL PROTECTED] wrote:
Try yourself: Get the P-38L in the air and fly full throttle straight and
level, open the property-browser for controls/flight. I need a right aileron
deflection to keep the wings level. If I reduce power to idle, the aircraft
turns sharply to
Hans Fugal wrote:
Perhaps someone who has flown a counterrotating twin can weigh in.
Then Torsten is the right person here. Guess who does fly the real-life
counterpart of the Seneca in FlightGear?
Cheers,
Ralf
-
This
explained the Seneca's behavior to me. Perhaps someone who has flown a
counterrotating twin can weigh in.
The Seneca POH says:
Counter-rotation of the propellers provides balanced thrust during takeoff
and climb and eliminates the `critical engine` in single engine flight.
Not that much of
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