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Release Note Line Item # and Description:
86. Adjusted engine wash on roll to have the left turn tendancy experienced in real flight
Is it fixed as stated?
[x ] Yes
No
Partial
Took off from rwy 23 yesterday against a 4-6 kts wind at 140. No rudder. Cessna 172 steered to the left by itself. Feels very close to rl. Great improvement. Gets more realistic every build! Congratulations!
If no or partial, please give details below on your findings:
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Is this fixed as stated?
Yes
No
Partial
Provide extra information to complete the original description of the issue:
If relevant, provide additional screenshots/video:
Provide extra information to complete the original description of the issue:
The plane only appears to have left turn tendencies during flight, not on the runway during takeoff, unless there is a crosswind coming from the left side. I would actually prefer takeoff to be more accurate. I find the rolling during long flights annoying, especially since the autorudder key binds do not work to toggle it on/off.
My plane usually pulls hard right on the runway before takeoff, provided auto-rudder assistance is disabled.
With the new flight model adjustments in SU9 I have to increase the trim about 4 or 5 degrees so that the plane doesnāt hit 100+ kts on the runway. Once the plane leaves the runway on its own, it has a very slight left bank, however I had already been adding a considerable amount of left rudder the whole time to keep it on the runway. (Note: I do not use rudder pedals)
Yes and this is backwards ā¦ single engine prop plane should have tendency to turn left on runway and on rotation / climbout ā¦ needing right rudder to compensate.
On my last takeoff the airplane just pulled hard left. Why would it pull hard right sometimes and hard left others? Wind direction? I am having inconsistencies with the simulator picking the wrong runway for takeoff sometimes.
In any kind of crosswind, MSFS rather overdoes the weathervaning effect where the wind pushes against the vertical stabilizer and the nose rotates into wind ā¦
What was your plane and your angle of attack?
My plane always turns left on the runway, unless thereās a strong crosswind, in which case I need to steer into the wind, which I am still learning and often forget, which makes the plane take off sideways
I was able to get rid of most wind it seems. The C172 G1000 goes off to the right every time (slowly, not a hard pull), no matter which end of the runway I take off. The propeller spins clockwise from the point of view of the cockpit (I shut the magnetos off, watched the prop stop, then restarted).
Even if the engine is at idle, with parking brake off, and I shove the throttle all the way in, there is still no left-turning tendency. This is at sea level approximately.
Being that I donāt have rudder pedals (I donāt even want them to be honest, because Iām a couch potato), Iām okay with the plane flying mostly level once in the air. I prefer not to have to use the auto-rudder to counter-act any annoying rolling tendencies a plane might have during long flights.
How strange this is. I am going to test again. You need a little steeper angle of attack to make this tendency a little more pronounced.
Ow, and I flew the steam Cessna. Donāt know if that matters?
Number 86 in the release notes refers to the G1000 version so thatās the plane Iāve been testing. The plane DOES have a left turn tendency during long flights, and I find that a bit annoying, even if it is accurate to real life. Itās the runway where the turn tendencies are inaccurate I guess. Iām going to edit my post above to say number 86 is partially fixed because the plane DOES have left turn tendencies during flight.
Cessna 172 Skyhawk G1000
Ported to new propeller system
CFD simulation now used for this aircraft
Adjusted engine wash on roll to have the left turn tendancy experienced in real flight
Corrected flaps section on the ski version
Added assymetric trim tab values to match real aircraft trim deflection
Updated flight model to match real recorded data behavior
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Depending what is meant with āleft turn tendenciesā (roll, yaw or both) this isnāt fixed. It does seem to roll a bit due to torque effect, all the other effects are completely absent, there is no P-factor or slipstream effect.
The description in release note is a bit unclear since engine wash has no (direct) effect on roll. The effect it has on angle of attack on the wing root is negligible, torque has a far greater effect. Engine wash (= slipstream) will primarily cause yaw which in turn causes roll.
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Cycling power between full power and idle close to stall speed you can see there is absolutely no yaw or any appreciable roll to the left, unrelated but I also tested adverse yaw which does seem to work.
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