The plane A-164 Wipeout / A-10D Thunderbolt is very hard to land

[okurz]

Arma 3 Version: 1.66 stable
CBA Version: 3.1.2.161105 stable
ACE3 Version: 3.8.3.14 stable

Mods:

• @CBA_A3
• @ace

Description:
The A-164 Wipeout / A-10D is very hard to land. Autoland hardly manages to land or fails with catastrophic failure.
As it looks like the file https://github.com/acemod/ACE3/blob/master/addons/aircraft/flightmodel_thunderbolt.hpp is the culprit configuring some parameters. In Vanilla the Wipeout can be landed very easily with keyboard+mouse as well as throttle+stick, e.g. slow down to 180 km/h, glide off, touch down, no problems. With @cba_a3+@ace one needs to stay above around 194 km/h at least and be very gentle. With throttle+stick (Saitex X45) this is almost impossible for me to manage as the error margin is very small.

I propose to adapt the settings so that one has a better chance to land without hurting the pilot or damaging the airframe.

Maybe the problem was introduced because the parameters come from ACE2/AGM and are not really applicable to the current flight model?

Steps to reproduce:

• Try to land A-164 Wipeout and compare to vanilla

Where did the issue occur?

• Regardless of player mode, reproducible in single player editor

Placed Modules:

• None

[PabstMirror]

This flightmodel stuff looks like it was ported from AGM and hasn't been touched since 2014.
The decrease to flapsFrictionCoef seems like it might be the cause of hard landings?
Do we have confidence these changes are still appropriate and realistic?

Vanilla:
maxSpeed = 706;
aileronSensitivity = 0.75;
elevatorSensitivity = 1.9;
rudderInfluence = 0.01;
aileronControlsSensitivityCoef = 3;
elevatorControlsSensitivity = 2;
rudderControlsSensitivityCoef = 4;
elevatorCoef[] = {0.6, 0.9, 0.5, 0.4, 0.35, 0.3, 0.3};
aileronCoef[] = {0.6, 1, 0.95, 0.9, 0.85, 0.8, 0.75};
rudderCoef[] = {0.6, 1, 1, 0.9, 0.8, 0.7, 0.6};
flapsFrictionCoef = 0.5;
angleOfIndicence = 0.0523599;
draconicForceXCoef = 7.4;
draconicForceYCoef = 3;
draconicForceZCoef = 0.1;
draconicTorqueXCoef = 1.2;
draconicTorqueYCoef = 3;
envelope[] = {0.1, 0.1, 0.9, 2.8, 3.5, 3.7, 3.8, 3.8, 3.6, 3.3, 2.7};
thrustCoef[] = {0.9, 0.8, 0.9, 1.3, 1.2, 1.2, 1.1, 1, 0.9, 0.2, 0.1, 0, 0};
acceleration = 300;
landingSpeed = 195;

ACE:
maxSpeed = 736;
aileronSensitivity = 0.85;
elevatorSensitivity = 0.75;
rudderInfluence = 0.001;
aileronControlsSensitivityCoef = 3;
elevatorControlsSensitivity = 2;
rudderControlsSensitivityoef = 4;
elevatorCoef[] = {0.7,0.75,0.75,0.65,0.55,0.45,0.35};
aileronCoef[] = {0.6,0.85,0.88,0.92,0.95,0.97,1};
rudderCoef[] = {0.8,0.75,0.65,0.5,0.4,0.33,0.3};
flapsFrictionCoef = 0.35;
angleOfIndicence = 0.0523599;
draconicForceXCoef = 9.5;
draconicForceYCoef = 0.56;
draconicForceZCoef = 0.1;
draconicTorqueXCoef = 0.58;
draconicTorqueYCoef = 0.00013;
envelope[] = {0,0,0.75,2.4,3.6,3.8,3.7,3.2,2.2,1.7,0.9};
thrustCoef[] = {1,1.2,1.3,1.25,1.06,1.01,1,0.92,0.75,0.65,0.5,0.25,0};
acceleration = 265;
landingSpeed = 220;

[bux]

I'd doubt it. The mentioned config changes were from Kimi's HUD / aircraft / helicopter mod and have - as pabst mentioned - never been updated.

Solution 1: Go back to vanilla
Solution 2: Check if there's a newer version of Kimi's Mod. Ask for permission to port it again (this time to ACE3). See if there are other parts of Kimi's old code/config that needs to be updated too.

[jonpas]

His mod most definitely got a lot of updates since it was included in ACE3. Maybe we could get a more streamlined updating of it's counterpart in ACE3, with permission of course.