Directional instability, bounced landings (1.5.4)

[CoBlue]

On final approach at 350Km/h fully configured, wing-rocking & roll instability.

Hard to keep wings level during approach. Can't get precise control.

Very noticeable when flying an PRMG approach in IMC. You end up chasing the needles.

 

Easily bounced landings with pitch up tendencies on touch down. You can't no longer land decisively, it's back to "gentle sail-plane" landings. Also the floating seems exaggerated before touch-down.

 

Very different from previous FM.

本帖最后于2016年7月20日，由CoBlue编辑

[cauldron]

On final approach at 350Km/h fully configured, wing-rocking & roll instability.

Hard to keep wings level during approach. Can't get precise control.

Very noticeable when flying an PRMG approach in IMC. You end up chasing the needles.

 

Easily bounced landings with pitch up tendencies on touch down. You can't no longer land decisively, it's back to "gentle sail-plane" landings. Also the floating seems exaggerated before touch-down.

 

Very different from previous FM.

 

My recommendation... test again in VMC. Chasing needles is a common error for IFR-IMC approaches... not a good situation to test a FM.

[Pocket Sized]

It looks like dutch roll.

 

Adverse yaw from the ailerons causes an opposing rolling moment and makes precise directional control difficult. Easiest way to fix is coordinate aileron with rudder or just make smaller adjustments and allow the aircraft to drift a bit.

[howie87]

What kind of fuel load are you trying to land with? I just tried a couple of times with 30%, 4 missiles and countermeasures and it seemed fine. There is some slow speed roll instability but it doesn't seem particularly pronounced. I was flying in VMC though and imagine it could be trickier to correct for accurately in IMC.

[humptydumpty]

I think just b4 the threshold i get the dutch roll. but sometimes she is quite stable can't figure why.