Cessna 152 — smooth hands-free trim

rodriguez No reviews yet updated 5d ago

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Character

How this profile feels, effect by effect, read straight from the profile JSON.

Spring / centering Light

Force ceiling Strong

Overall force Firm

Trim relief Light

G-load Strong

Runway rumble Moderate

Stall buffet Strong

Turbulence Strong

Engine rumble Strong

Stick-alive Firm

Notes from rodriguez

"Completed several traffic patterns and flights with the Cessna 152 and the behaviour is now absolutely perfect. By setting the elevator trim authority to 0.26 (leaving propwash and surface-follow at defaults, with aero-drag and stick-alive on), the aircraft trims smoothly and easily — I can fly straight and level hands-free." — shared by rodriguez (MS Sidewinder FFB2).

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Profile JSON

Drop this into FFB-Bridge's profiles folder, or use Download / Copy above.

{
  "Forces": {
    "SpringStrength": 0.3038961038961039,
    "SpringDeadband": 0.0044526901669758815,
    "ForceGain": 0.8,
    "CruiseSpeedRefKnots": 92.5607476635514,
    "MaxOutputForce": 0.7512059369202226,
    "MasterGain": 0.85
  },
  "Ground": {
    "Enabled": true,
    "Rumble": {
      "MinSpeedKt": 2,
      "FullSpeedKt": 60,
      "Gain": 0.25794392523364484
    },
    "Thump": {
      "ReferenceSinkFps": 4,
      "MinSinkFps": 1,
      "Gain": 0.40186915887850466
    },
    "Bumps": {
      "StartSpeedKt": 10,
      "FullSpeedKt": 50,
      "Gain": 0.29906542056074764
    },
    "Brake": {
      "MinSpeedKt": 3,
      "FullSpeedKt": 25,
      "BrakeDeadband": 0.05,
      "Gain": 0.20373831775700935
    },
    "Reverse": {
      "MinSpeedKt": 30,
      "FullSpeedKt": 120,
      "Gain": 0
    },
    "SurfaceScalingEnabled": true
  },
  "StickFeel": {
    "TrimFeelEnabled": true,
    "TrimFeel": {
      "ElevatorAuthority": 0.26,
      "AileronAuthority": 0
    },
    "GLoadEnabled": true,
    "GLoadStiffness": {
      "BaseCoefficient": 0.20408163265306123,
      "GGain": 0.25,
      "MinCoefficient": 0.15,
      "MaxCoefficient": 1
    },
    "DynamicDeadbandEnabled": true,
    "DynamicDeadband": {
      "BaseDeadband": 0.002636534839924671,
      "LowSpeedWidening": 0.12,
      "FullSpeedRefKnots": 50,
      "MaxDeadband": 0.3
    },
    "ControlEdgeEnabled": true,
    "ControlEdge": {
      "EdgeStart": 0.8028037383177571,
      "Gain": 0.24962406015037597
    },
    "RateDampingEnabled": true,
    "RateDamping": {
      "PitchGain": 0.10037383177570093,
      "RollGain": 0.07626168224299065,
      "MaxForce": 0.2
    },
    "StickDropEnabled": true,
    "StickDrop": {
      "Force": 0.15285451197053407,
      "FadeKts": 34.73098330241187
    },
    "TrimReliefEnabled": false,
    "TrimRelief": {
      "ElevatorAuthority": 0,
      "AileronAuthority": 0
    }
  },
  "Aero": {
    "Enabled": true,
    "Stall": {
      "Gain": 0.6542056074766355
    },
    "Overspeed": {
      "Gain": 0.40037593984962405
    },
    "Mach": {
      "MinMach": 0.82,
      "FullMach": 0.95,
      "Gain": 0
    },
    "Turbulence": {
      "MinStddev": 0.02,
      "FullStddev": 0.25,
      "Gain": 0.4837174721189591,
      "AmbientGain": 0.7
    },
    "Spoiler": {
      "MinDeploy": 0.1,
      "MinSpeedKt": 60,
      "FullSpeedKt": 200,
      "Gain": 0
    },
    "Flap": {
      "MaxFlapIndex": 4,
      "MinFlapIndex": 2,
      "MinSpeedKt": 50,
      "FullSpeedKt": 85,
      "Gain": 0.15140186915887852
    },
    "Gear": {
      "MinSpeedKt": 80,
      "FullSpeedKt": 150,
      "Gain": 0
    },
    "TurbulenceWindowSamples": 20
  },
  "AeroDrag": {
    "Enabled": true,
    "Flap": {
      "MaxFlapIndex": 4,
      "Gain": 0.15,
      "MinKnots": 30,
      "FullKnots": 85
    },
    "Spoiler": {
      "Gain": 0,
      "MinKnots": 60,
      "FullKnots": 220,
      "MinDeploy": 0.05
    },
    "Gear": {
      "Gain": 0,
      "MinKnots": 70,
      "FullKnots": 200
    },
    "Propwash": {
      "Gain": 0.18,
      "MinRpm": 0.4,
      "WashoutKnots": 80
    }
  },
  "Mechanical": {
    "Enabled": true,
    "GearDeploy": {
      "Gain": 0
    },
    "FlapStep": {
      "Gain": 0.12897196261682242
    }
  },
  "Watchdog": {
    "StaleSec": 5,
    "FadeMs": 500
  },
  "Autopilot": {
    "FollowEnabled": false,
    "FollowAuthority": 0.7,
    "FollowSpringStrength": 0.4
  },
  "Engine": {
    "Enabled": true,
    "Rumble": {
      "IdleRpmPct": 0.2,
      "FullRpmPct": 1,
      "Gain": 0.24046728971962616
    }
  },
  "StickAlive": {
    "Enabled": true,
    "RotationKick": {
      "Enabled": true,
      "PitchGain": 0.04,
      "RollGain": 0.03,
      "MaxOutput": 0.6,
      "DeadbandRadPerSec2": 0.5
    },
    "SurfaceFollow": {
      "Enabled": true,
      "Gain": 0.4,
      "FullAirspeedKnots": 100,
      "MinAirspeedKnots": 30,
      "DeltaDeadband": 0.05,
      "MaxOutput": 0.5
    },
    "SideslipCoupling": {
      "Enabled": true,
      "Gain": 1,
      "FullAirspeedKnots": 110,
      "MinAirspeedKnots": 40,
      "BetaDeadbandRad": 0.02,
      "MaxOutput": 0.4
    },
    "UseSimEngineVibration": true,
    "UseTireLoadThump": true,
    "TireLoadGain": 0.5
  }
}