{ "formatVersion": 1, "kind": "ffb-bridge.profile", "id": "addon-hotstart-cl650", "revision": 3, "metadata": { "title": "Hot Start Challenger 650", "description": "Hot Start Challenger 650: source-reviewed configuration with estimated feel and explicit integration limits.", "author": { "name": "FFB-Bridge", "id": "rohsam" }, "aircraft": [ { "name": "Challenger 650", "kind": "airplane", "identifiers": [ { "scheme": "airframedb", "value": "bombardier-challenger-650" } ] } ], "sims": [], "hardware": [], "tags": [ "starting-point", "estimated-feel", "third-party", "reviewed-configuration" ], "targets": [ { "aircraftId": "bombardier-challenger-650", "implementationId": "xplane-addon-hotstart-cl650", "simulator": "xplane12", "scope": "addon-starting-point", "developer": "Hot Start", "addonName": "Hot Start Challenger 650" } ], "evidence": { "basis": "research-derived-estimates", "summary": "Hot Start Challenger 650: source-reviewed configuration with estimated feel and explicit integration limits.", "reviewedOn": "2026-09-25", "sourceUrls": [ "https://www.x-aviation.com/catalog/product_info.php/take-command-hot-start-challenger-650-p-212", "https://forums.x-pilot.com/forums/topic/24574-take-command-hot-start-challenger-650-v161-update-released/", "https://airframedb.com/aircraft/bombardier-challenger-650" ], "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": [ "Hot Start Challenger 650; xplane12. Retain prior observed titles and implementation identifiers; installed matching remains deferred.", "Powered conventional yoke with nominal artificial feel. A constant spring is an explicitly limited approximation of the documented trim-dependent pitch-feel gradient.", "No guessed force-ratio/gradient or9-degree scaling from invalid HSTCU data. Populated standard trim is preserved, but not converted to physical neutral without a verified relationship.", "Preserve positive Hot Start author identity, AP_ENG_A/B and both SVO clutch authority checks. FD SYNC can leave AP engaged with servos released; stale/partial authority inhibits follow. Preserve the existing guarded AP-follow feature; installed/physical acceptance is limited to its separately recorded scope. Neutral hold remains disabled.", "Twin jet with retractable gear, flaps and spoilers. Existing additive positive STKSHAKE motor observation remains available; no voltage-to-torque or pusher mapping. ", "250 KIAS is an estimated feel reference, not cruise TAS or a certified limit. No invented Mach, VNE or weight scheduling.", "Retain ADR0108 and docs/internal/2026-09-22-cl650.md: normalized cockpit columns, plugin input ownership, independent freshness and invalid HSTCU rejection. Do not change aircraft user settings automatically. Variable pitch feel needs an actual force ratio and valid indicated-position mapping; source review does not invent either.", "Spring 0.56; lateral scale 0.78; trim authorities 0/0; per-axis output cap .55. Editable engineering estimates, not measured hand forces. No body-rate torque, surface following or fabricated hydraulic-failure loads.", "New physical and installed-product checks deferred by owner. Existing separately recorded acceptance retains its original device, simulator, add-on and version limits. Source review does not broaden custom telemetry acceptance.", "Only actual accessory position changes drive movement texture; static drag and command-triggered kicks are disabled. Select and save an aircraft default when telemetry lacks a discriminating developer/configuration identity.", "Centre starting force 0.2 with a 0.05 minimum transition (revision 3, 2026-09-25, docs/cl650-center-starting-force-2026-09-25.md): extra restoring force outside the 3.5% spring deadband around the spring centre, added for the reported loose centre that a native spring coefficient at the device ceiling cannot firm. It rises no faster than the native spring (the combined centre gradient is doubled until the 0.16 post-gain hold is reached, about 36% of pitch travel beyond the deadband), then holds. MOZA bases render it as a second firmware Spring condition on every force backend (Windows raw HID/PID, DirectInput, macOS IOHID/PID, Linux evdev), allocated only while the profile requests it; other devices fold the same slope-bounded curve into the constant channel. The 3.5% deadband is retained: the reporter's own Cockpit preset pairs a 7% pitch dead zone with a firmware starting force, so the missing element was the starting force, not the deadband. The value is an editable engineering estimate bounded by the device envelope; physical comparison, including hands-off behaviour on a low-friction direct-drive base, is pending." ] }, "derivedFrom": { "kind": "profile", "id": "addon-hotstart-cl650", "version": 1 }, "createdWith": "FFB-Bridge 1.6", "createdAt": "2026-09-21", "updatedAt": "2026-09-25", "addon": { "developer": "Hot Start", "product": "Challenger 650", "simulator": "xplane12" } }, "compatibility": { "minAppVersion": "1.6.0-beta.1" }, "modules": [ { "type": "force-model", "schemaVersion": 7, "data": { "Forces": { "SpringStrength": 0.56, "SpringDeadband": 0.035, "ForceGain": 0, "CruiseSpeedRefKnots": 250, "MaxOutputForce": 0.55, "MasterGain": 0.8, "QBlendEnabled": false, "QSpringStartKnots": 8, "QSpringFullKnots": 65, "QSpringMinimumFactor": 0.55, "HydraulicAeroLoadFactor": 0, "LoadShapingExponent": 1, "SpringAirspeedStiffenGain": 0, "SpringAirspeedStiffenCap": 5, "ElevatorForceScale": 1, "AileronForceScale": 0.78, "CenterStartingForce": 0.2, "CenterStartingForceTransition": 0.05 }, "Ground": { "Enabled": true, "Rumble": { "MinSpeedKt": 5, "FullSpeedKt": 120, "Gain": 0.4 }, "Thump": { "ReferenceSinkFps": 8, "MinSinkFps": 1, "Gain": 0.9 }, "Bumps": { "StartSpeedKt": 18, "FullSpeedKt": 90, "Gain": 0.32 }, "Brake": { "MinSpeedKt": 5, "FullSpeedKt": 55, "BrakeDeadband": 0.07, "Gain": 0.1 }, "Reverse": { "MinSpeedKt": 35, "FullSpeedKt": 125, "Gain": 0 }, "NosewheelShimmy": { "MinSpeedKt": 40, "FullSpeedKt": 110, "Gain": 0 }, "GroundAccelPitch": { "Gain": 0, "DeadbandG": 0.03 }, "SkidScrape": { "MinSpeedKt": 2, "FullSpeedKt": 10, "MaxSpeedKt": 25, "Gain": 0 }, "SurfaceScalingEnabled": true, "Undercarriage": 0 }, "StickFeel": { "TrimFeelEnabled": false, "TrimFeel": { "ElevatorAuthority": 0.35, "AileronAuthority": 0.15 }, "GLoadEnabled": false, "GLoadStiffness": { "MinFactor": 0.35, "GGain": 0.16, "MaxFactor": 1.1 }, "DynamicDeadbandEnabled": false, "DynamicDeadband": { "LowSpeedWidening": 0.03, "FullSpeedRefKnots": 70 }, "ControlEdgeEnabled": true, "ControlEdge": { "EdgeStart": 0.88, "Gain": 0.22 }, "RateDampingEnabled": false, "RateDamping": { "PitchGain": 0, "RollGain": 0, "MaxForce": 0.28 }, "StickDropEnabled": false, "StickDrop": { "Force": 0.25, "FadeKts": 60 }, "TrimReliefEnabled": false, "TrimRelief": { "ElevatorAuthority": 0, "AileronAuthority": 0 }, "CyclicDampingEnabled": false, "CyclicDamping": { "Gain": 0, "MaxForce": 0.35, "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": 0.55, "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": 0.1 }, "Mach": { "MinMach": 0.87, "FullMach": 0.89, "Gain": 0 }, "Turbulence": { "MinStddev": 0.025, "FullStddev": 0.32, "Gain": 0.05, "AmbientGain": 0, "VerticalWindGain": 0, "VerticalWindStartFps": 1, "VerticalWindFullFps": 15 }, "Spoiler": { "MinDeploy": 0.08, "MinSpeedKt": 80, "FullSpeedKt": 230, "Gain": 0 }, "Flap": { "MaxFlapIndex": 3, "MinFlapIndex": 2, "MinSpeedKt": 104.0, "FullSpeedKt": 182.0, "Gain": 0 }, "Gear": { "MinSpeedKt": 140, "FullSpeedKt": 270, "Gain": 0 }, "Etl": { "StartKt": 12, "StopKt": 24, "Gain": 0 }, "Vrs": { "MaxIasKt": 28, "OnsetSinkFps": 5, "FullSinkFps": 15, "MinEngineRpmPct": 0.5, "Gain": 0, "MinCollectivePct": 0.4 }, "TwoPerRev": { "MinSpeedKt": 30, "FullSpeedKt": 100, "Gain": 0, "BladeCount": 2 }, "Rbs": { "VneKt": 130, "OnsetFraction": 0.85, "Gain": 0 }, "ShakerEnabled": true, "Shaker": { "Amplitude": 0.9 }, "TurbulenceWindowSamples": 24 }, "AeroDrag": { "Enabled": true, "Flap": { "MaxFlapIndex": 3, "Gain": 0, "MinKnots": 65.0, "FullKnots": 182.0 }, "Spoiler": { "Gain": 0, "MinKnots": 80, "FullKnots": 230, "MinDeploy": 0.08 }, "Gear": { "Gain": 0, "MinKnots": 140, "FullKnots": 270 }, "Propwash": { "Gain": 0, "MinRpm": 0.3, "WashoutKnots": 120 } }, "Mechanical": { "Enabled": true, "GearDeploy": { "Gain": 0 }, "FlapStep": { "Gain": 0 }, "FlapMotion": { "Gain": 0.022, "MinimumPositionDelta": 0.001, "PacketHoldSeconds": 0.12, "ArrivalSettleSeconds": 0.25 }, "GearMotion": { "Gain": 0.025, "MinimumPositionDelta": 0.001, "PacketHoldSeconds": 0.12, "ArrivalSettleSeconds": 0.25 }, "FlapArrival": { "Gain": 0 } }, "Watchdog": { "StaleSec": 5, "FadeMs": 500 }, "Autopilot": { "FollowEnabled": true, "FollowAuthority": 0.1, "FollowSpringStrength": 0.2, "FollowSpeed": 1, "NeutralHoldEnabled": false, "NeutralHoldStrength": 0.6 }, "Engine": { "Enabled": true, "Rumble": { "IdleRpmPct": 0.28, "FullRpmPct": 1, "Gain": 0.018, "IdleRoughnessGain": 0, "IdleSmoothRpmPct": 0.45, "FrequencyAtMaxRpmHz": 0 }, "Rotor": { "NominalRotorRpm": 0, "IdleRpmPct": 0.05, "FullRpmPct": 1, "Gain": 0, "GovernorDroopBelowPct": 0.97, "GovernorDroopFloorPct": 0.85, "GovernorDroopGain": 0 } }, "StickAlive": { "Enabled": true, "RotationKick": { "Enabled": false, "PitchGain": 0.01, "RollGain": 0.01, "MaxOutput": 0.12, "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": true, "TireLoadGain": 0.15 }, "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": 1 } } ] }