{ "formatVersion": 1, "kind": "ffb-bridge.profile", "id": "addon-vskylabs-r44", "revision": 3, "metadata": { "title": "VSKYLABS Robinson R44 Raven II", "description": "VSKYLABS Robinson R44 Raven II: documented controls and configuration with estimated force feel.", "author": { "name": "FFB-Bridge", "id": "rohsam" }, "aircraft": [ { "name": "Robinson R44 Raven II", "kind": "helicopter", "identifiers": [ { "scheme": "airframedb", "value": "robinson-r44" } ] } ], "sims": [], "hardware": [], "tags": [ "starting-point", "estimated-feel", "specialist", "rotorcraft" ], "targets": [ { "aircraftId": "robinson-r44", "implementationId": "review-vskylabs-robinson-r44", "simulator": "xplane12", "scope": "addon-starting-point", "developer": "VSKYLABS", "addonName": "VSKYLABS Robinson R44 Raven II" } ], "evidence": { "basis": "research-derived-estimates", "summary": "VSKYLABS Robinson R44 Raven II: documented controls and configuration with estimated force feel.", "reviewedOn": "2026-09-24", "sourceUrls": [ "https://aircraft.vskylabs.com/2026/03/robinson-r44-raven-ii-poh.html", "https://robinsonstrapistorprod.blob.core.windows.net/uploads/assets/r44ii_poh_2_4c17ab4577.pdf", "https://airframedb.com/aircraft/robinson-r44" ], "estimatedSettings": [ "Force amplitudes, damping, friction, response curves and cue onset are engineering estimates, not measured hand forces.", "The indicated-airspeed tuning reference is a selected control-feel reference, not published cruise TAS." ], "limitations": [ "Governor activates above80 percent engine RPM. Manufacturer408RPM is102 percent, so normalization uses400RPM at100 percent, not408. Standard rotor telemetry still requires installed acceptance.", "Physical and installed-aircraft acceptance deferred. Gains, damping, frequency envelopes and airspeed references are estimates.", "No unqualified AP following, trim actuator demand, failure behavior or dynamic equipment detection.", "Rotor rumble uses actual rotor state only. Enabled forward-flight n/rev retains the runtime engine-combustion presence and governed-nominal frequency fallback when rotor telemetry is missing; it is not measured rotor loading. ETL/VRS are generic airspeed/descent heuristics, not add-on vortex-state integration.", "Metadata identity repair only; force modules, matching and simulator scope unchanged." ], "editionReview": { "reviewedOn": "2026-09-24", "simulators": [ "xplane12" ], "reason": "Restore implementation identity and original creation date dropped by full-review metadata projection." } }, "derivedFrom": { "kind": "profile", "id": "addon-vskylabs-r44", "version": 1 }, "createdWith": "FFB-Bridge 1.6", "createdAt": "2026-09-21", "updatedAt": "2026-09-24", "addon": { "developer": "VSKYLABS", "product": "Robinson R44 Raven II", "simulator": "xplane12" } }, "compatibility": { "minAppVersion": "1.6.0-beta.1" }, "modules": [ { "type": "force-model", "schemaVersion": 7, "data": { "Forces": { "SpringStrength": 0.1, "SpringDeadband": 0.02, "ForceGain": 0, "CruiseSpeedRefKnots": 105, "MaxOutputForce": 0.55, "MasterGain": 0.65, "QBlendEnabled": false, "QSpringStartKnots": 10, "QSpringFullKnots": 45, "QSpringMinimumFactor": 0.55, "HydraulicAeroLoadFactor": 0.45, "LoadShapingExponent": 1, "SpringAirspeedStiffenGain": 0, "SpringAirspeedStiffenCap": 2, "ElevatorForceScale": 1, "AileronForceScale": 1 }, "Ground": { "Enabled": true, "Rumble": { "MinSpeedKt": 2, "FullSpeedKt": 30, "Gain": 0 }, "Thump": { "ReferenceSinkFps": 6, "MinSinkFps": 1, "Gain": 0.2 }, "Bumps": { "StartSpeedKt": 15, "FullSpeedKt": 60, "Gain": 0 }, "Brake": { "MinSpeedKt": 3, "FullSpeedKt": 30, "BrakeDeadband": 0.05, "Gain": 0 }, "Reverse": { "MinSpeedKt": 30, "FullSpeedKt": 120, "Gain": 0 }, "NosewheelShimmy": { "MinSpeedKt": 5, "FullSpeedKt": 35, "Gain": 0 }, "GroundAccelPitch": { "Gain": 0, "DeadbandG": 0.03 }, "SkidScrape": { "MinSpeedKt": 2, "FullSpeedKt": 10, "MaxSpeedKt": 25, "Gain": 0.12 }, "SurfaceScalingEnabled": true, "Undercarriage": 0 }, "StickFeel": { "TrimFeelEnabled": false, "TrimFeel": { "ElevatorAuthority": 0, "AileronAuthority": 0 }, "GLoadEnabled": true, "GLoadStiffness": { "MinFactor": 1, "GGain": 0, "MaxFactor": 1 }, "DynamicDeadbandEnabled": false, "DynamicDeadband": { "LowSpeedWidening": 0.15, "FullSpeedRefKnots": 55 }, "ControlEdgeEnabled": false, "ControlEdge": { "EdgeStart": 0.85, "Gain": 0.3 }, "RateDampingEnabled": false, "RateDamping": { "PitchGain": 0, "RollGain": 0, "MaxForce": 0.2 }, "StickDropEnabled": false, "StickDrop": { "Force": 0.25, "FadeKts": 31.5 }, "TrimReliefEnabled": false, "TrimRelief": { "ElevatorAuthority": 0, "AileronAuthority": 0 }, "CyclicDampingEnabled": true, "CyclicDamping": { "Gain": 0.12, "MaxForce": 0.25, "VelocityNoiseFloor": 0.12, "SmoothingTimeConstantSeconds": 0.015, "PitchGain": null, "RollGain": null }, "StickFrictionEnabled": false, "StickFriction": { "Strength": 0, "PitchStrength": null, "RollStrength": null }, "ControlInertiaEnabled": false, "ControlInertia": { "PitchStrength": 0, "RollStrength": 0 }, "SoftStopsEnabled": false, "SoftStops": { "PitchStart": 0.85, "PitchStrength": 0, "RollStart": 0.85, "RollStrength": 0 }, "ForceTrimEnabled": false, "ForceTrim": { "HoldStrength": 0, "Deadband": 0.02, "BreakoutTravel": 0.3, "BeepTrimRate": 0.25, "FollowUpTrim": false, "FollowUpRate": 0.15, "FollowUpMaxAirspeedKt": 40, "FollowUpDeadband": 0.06 }, "HydraulicTrimCenteringEnabled": false }, "Aero": { "Enabled": true, "Stall": { "Gain": 0 }, "Overspeed": { "Gain": 0 }, "Mach": { "MinMach": 0.9, "FullMach": 0.92, "Gain": 0 }, "Turbulence": { "MinStddev": 0.02, "FullStddev": 0.3, "Gain": 0.15, "AmbientGain": 0.2, "VerticalWindGain": 0, "VerticalWindStartFps": 1, "VerticalWindFullFps": 15 }, "Spoiler": { "MinDeploy": 0.1, "MinSpeedKt": 60, "FullSpeedKt": 200, "Gain": 0 }, "Flap": { "MaxFlapIndex": 1, "MinFlapIndex": 1, "MinSpeedKt": 42.0, "FullSpeedKt": 73.5, "Gain": 0 }, "Gear": { "MinSpeedKt": 80, "FullSpeedKt": 150, "Gain": 0 }, "Etl": { "StartKt": 12, "StopKt": 24, "Gain": 0.14 }, "Vrs": { "MaxIasKt": 28, "OnsetSinkFps": 5, "FullSinkFps": 15, "MinEngineRpmPct": 0.5, "Gain": 0.16, "MinCollectivePct": 0.4 }, "TwoPerRev": { "MinSpeedKt": 30, "FullSpeedKt": 105, "Gain": 0.08, "BladeCount": 2 }, "Rbs": { "VneKt": 130, "OnsetFraction": 0.85, "Gain": 0 }, "ShakerEnabled": false, "Shaker": { "Amplitude": 0.5 }, "TurbulenceWindowSamples": 20 }, "AeroDrag": { "Enabled": false, "Flap": { "MaxFlapIndex": 1, "Gain": 0, "MinKnots": 26.2, "FullKnots": 73.5 }, "Spoiler": { "Gain": 0, "MinKnots": 60, "FullKnots": 220, "MinDeploy": 0.05 }, "Gear": { "Gain": 0, "MinKnots": 70, "FullKnots": 200 }, "Propwash": { "Gain": 0, "MinRpm": 0.3, "WashoutKnots": 75.6 } }, "Mechanical": { "Enabled": true, "GearDeploy": { "Gain": 0 }, "FlapStep": { "Gain": 0 }, "FlapMotion": { "Gain": 0, "MinimumPositionDelta": 0.001, "PacketHoldSeconds": 0.12, "ArrivalSettleSeconds": 0.25 }, "GearMotion": { "Gain": 0, "MinimumPositionDelta": 0.001, "PacketHoldSeconds": 0.12, "ArrivalSettleSeconds": 0.25 }, "FlapArrival": { "Gain": 0 } }, "Watchdog": { "StaleSec": 5, "FadeMs": 500 }, "Autopilot": { "FollowEnabled": false, "FollowAuthority": 0.05, "FollowSpringStrength": 0.25, "FollowSpeed": 1, "NeutralHoldEnabled": false, "NeutralHoldStrength": 0.6 }, "Engine": { "Enabled": true, "Rumble": { "IdleRpmPct": 0.55, "FullRpmPct": 1, "Gain": 0, "IdleRoughnessGain": 0, "IdleSmoothRpmPct": 0.45, "FrequencyAtMaxRpmHz": 0 }, "Rotor": { "NominalRotorRpm": 400, "IdleRpmPct": 0.05, "FullRpmPct": 1, "Gain": 0.08, "GovernorDroopBelowPct": 0.97, "GovernorDroopFloorPct": 0.85, "GovernorDroopGain": 0 } }, "StickAlive": { "Enabled": true, "RotationKick": { "Enabled": false, "PitchGain": 0, "RollGain": 0, "MaxOutput": 0, "DeadbandRadPerSec2": 0.75 }, "SurfaceFollow": { "Enabled": false, "Gain": 0, "FullAirspeedKnots": 100, "MinAirspeedKnots": 30, "DeltaDeadband": 0.05, "MaxOutput": 0 }, "SideslipCoupling": { "Enabled": false, "Gain": 0, "FullAirspeedKnots": 110, "MinAirspeedKnots": 40, "BetaDeadbandRad": 0.02, "MaxOutput": 0 }, "UseSimEngineVibration": false, "UseTireLoadThump": false, "TireLoadGain": 0 }, "ControlInput": { "Mode": 0, "Pitch": { "CommandForce": 0.5, "ForceDeadZone": 0.05, "Travel": 0.25, "Positive": null, "Negative": null, "PositiveCommandForce": 0.5, "NegativeCommandForce": 0.5, "PositiveForceDeadZone": 0.05, "NegativeForceDeadZone": 0.05, "PositiveTravel": 0.25, "NegativeTravel": 0.25 }, "Roll": { "CommandForce": 0.5, "ForceDeadZone": 0.05, "Travel": 0.25, "Positive": null, "Negative": null, "PositiveCommandForce": 0.5, "NegativeCommandForce": 0.5, "PositiveForceDeadZone": 0.05, "NegativeForceDeadZone": 0.05, "PositiveTravel": 0.25, "NegativeTravel": 0.25 }, "OverRangeCue": true }, "Hydraulics": { "LossLoadIncrease": 0 }, "ControlSystem": 3 } } ] }