Airbus H125
Airbus H125: Nominal cyclic centering represents the boosted control arrangement without adding an unmodeled servo-transparency force.
Aircraft and simulator scope
- Airbus H125 · MSFS 2024 · family starting point
- Airbus H125 · MSFS 2020 · family starting point
- Airbus H125 · X-Plane 12 · family starting point
- Airbus H125 · X-Plane 11 · family starting point
CowanSim H125 MSFS manual and optional HeliSAS manual; these simulator-specific bindings do not apply automatically to every H125. · Selected choice: Airbus H125. Documentary scope does not establish every variant, add-on revision or simulator binding.
The simulator model and controls
The H125 belongs to the AS350 lineage developed by Aérospatiale and continued through Eurocopter into Airbus Helicopters. Its broad cabin and single turbine support work ranging from passenger transport to observation and external-load operations.
This starting point selects Airbus H125. Its aircraft-level settings do not select a particular developer’s custom systems.
How this profile feels
Spring resistance builds with the selected airspeed response. A separate aerodynamic term adds speed-dependent control load.
Local force trim is off. Autopilot following is off.
Cyclic damping is on. Its configured gain is 0.35; it resists hardware motion separately from the spring and aircraft stabilization.
Controls and trim
The H125/AS350 has hydraulically assisted cyclic controls. The cited AS350 retrofit account describes very little aerodynamic feedback and quick linkage response; servo transparency under high loads is a separate documented phenomenon that this profile does not reproduce. CowanSim's optional HeliSAS distinguishes force-trim procedures for spring-centred and noncentering controls. Its trim-release and reset commands are not continuously readable hardware-neutral positions.
About the values
The gains are normalized profile settings. They describe the chosen effect balance; hand force depends on the device and its output limits. IAS references are tuning values rather than operating limits. Physical acceptance of this revision remains pending.
What the documentation establishes
The CowanSim manual identifies the H125 implementation and distinguishes collective from engine throttle control.
Longitudinal/lateral rotor trim and trim reset are documented; disabled local force trim must not imply the add-on has no trim.
Optional HeliSAS provides attitude stabilization and autopilot modes, with different force-trim behavior for spring and noncentering controls.
The manual documents governor/throttle behavior and hydraulic controls; force-cue magnitudes remain unknown.
HeliSAS states an autopilot operating threshold above 44 knots; this is a mode threshold, not a cyclic force-reference speed.
Documentary review and sources
These decisions describe the documentary basis and remaining gaps for this revision. Aircraft documentation and a starting setting describe different kinds of evidence.
Aircraft and variant
ReviewedThis starting point selects Airbus H125. Its aircraft-level settings do not select a particular developer’s custom systems.
Flight controls
Not yet reviewedThe H125/AS350 has hydraulically assisted cyclic controls. The cited AS350 retrofit account describes very little aerodynamic feedback and quick linkage response; servo transparency under high loads is a separate documented phenomenon that this profile does not reproduce. CowanSim's optional HeliSAS distinguishes force-trim procedures for spring-centred and noncentering controls. Its trim-release and reset commands are not continuously readable hardware-neutral positions.
Trim
ReviewedCyclic damping is on. Its configured gain is 0.35; it resists hardware motion separately from the spring and aircraft stabilization.
Autopilot and stability
ReviewedAutopilot following is off; the configured spring and load retain the hardware feel.
Equipment
ReviewedGear, flap and ground cues follow the selected settings and available simulator-reported states.
Speeds and limits
ReviewedThe indicated-speed references set the profile response scale; they are separate from aircraft operating limits.
Simulator integration
ReviewedThe profile targets msfs2024, msfs2020, xplane12, xplane11. Add-on-specific controls use only the supported references configured by this profile.
Force-feedback settings
Not yet reviewedThe settings define the profile’s effect balance. Device output limits affect physical hand force.
Starting settings and their rationale
These configured values are starting estimates. The explanations describe what each setting controls; physical validation appears separately below.
| Setting | Starting value | What it controls and why |
|---|---|---|
| Spring strength | Starting value0 | What it controls and whyNominal cyclic centering represents the boosted control arrangement without adding an unmodeled servo-transparency force. The baseline spring is 0. Its low-speed blend reaches baseline strength at 60 KIAS. |
| Master force gain | Starting value0.85 | What it controls and whyScales overall profile strength while preserving effect balance, subject to device and output limits. |
| Profile force gain | Starting value0.35 | What it controls and whyThe aerodynamic-load gain is 0.35 with an indicated-speed reference of 120 KIAS. This supplies speed-dependent loading alongside the spring. |
| Force tuning speed/reference | Starting value120.0 kt | What it controls and whySets the IAS reference for aerodynamic loading. It is an estimate, not published cruise TAS or a flight limit. |
| Spring response reference speed | Starting value60.0 kt | What it controls and whySets the IAS where the low-speed blend reaches baseline strength; high-speed stiffening also uses it. |
| Aileron force scale | Starting value1 | What it controls and whyRoll and pitch aerodynamic scales are 1 and 1, respectively. They set the aerodynamic axis balance. No custom spring-travel curve is enabled. |
| Elevator force scale | Starting value1 | What it controls and whyScales pitch aerodynamic loading; pitch spring travel and trim responses are separate settings. |
| Trim feel | Starting valueDisabled | What it controls and whyRetained for compatibility and group membership. Trim relief, rather than this flag, controls centre movement. |
| Trim relief | Starting valueDisabled | What it controls and whyAllows trim relief with supported control law and valid telemetry. Axis authorities set its amount. |
| Autopilot follow | Starting valueDisabled | What it controls and whyAutopilot following is off; the configured spring and load retain the hardware feel. |
| Autopilot neutral hold | Starting valueDisabled | What it controls and whyPermits centering hold during a supported AP state, separate from following a moving target. |
| Output force limit | Starting value0.55 | What it controls and whyCaps directed-force output. Native spring effects and device limits remain separate. |
All 44 starting settings and their rationale
The settings define the profile’s effect balance. Device output limits affect physical hand force.
| Setting | Starting value | What it controls and why |
|---|---|---|
| Spring strength | Starting value0 | What it controls and whyNominal cyclic centering represents the boosted control arrangement without adding an unmodeled servo-transparency force. The baseline spring is 0. Its low-speed blend reaches baseline strength at 60 KIAS. |
| Spring deadband | Starting value0.02 | What it controls and whySets travel around the centre before the baseline spring resists. Smaller values engage it sooner. |
| Profile force gain | Starting value0.35 | What it controls and whyThe aerodynamic-load gain is 0.35 with an indicated-speed reference of 120 KIAS. This supplies speed-dependent loading alongside the spring. |
| Master force gain | Starting value0.85 | What it controls and whyScales overall profile strength while preserving effect balance, subject to device and output limits. |
| QBlend Enabled | Starting valueEnabled | What it controls and whyAllows baseline spring strength to rise with indicated airspeed where the control law permits it. |
| QSpring Minimum Factor | Starting value1 | What it controls and whySets low-speed spring strength as a fraction of baseline when blending is enabled. One keeps full strength. |
| QSpring Start Knots | Starting value16.8 kt | What it controls and whySets the IAS where the low-speed spring blend starts rising. This is a feel threshold, not a flight limit. |
| Spring response reference speed | Starting value60.0 kt | What it controls and whySets the IAS where the low-speed blend reaches baseline strength; high-speed stiffening also uses it. |
| Force tuning speed/reference | Starting value120.0 kt | What it controls and whySets the IAS reference for aerodynamic loading. It is an estimate, not published cruise TAS or a flight limit. |
| Airspeed spring stiffening gain | Starting value0 | What it controls and whyAdds permitted spring resistance above the full-blend speed. Zero removes this high-speed increase. |
| Airspeed spring stiffening limit | Starting value5 | What it controls and whyLimits the squared airspeed ratio used for high-speed spring stiffening; it is not a device-force cap. |
| Aileron force scale | Starting value1 | What it controls and whyRoll and pitch aerodynamic scales are 1 and 1, respectively. They set the aerodynamic axis balance. No custom spring-travel curve is enabled. |
| Elevator force scale | Starting value1 | What it controls and whyScales pitch aerodynamic loading; pitch spring travel and trim responses are separate settings. |
| Output force limit | Starting value0.55 | What it controls and whyCaps directed-force output. Native spring effects and device limits remain separate. |
| Trim feel | Starting valueDisabled | What it controls and whyRetained for compatibility and group membership. Trim relief, rather than this flag, controls centre movement. |
| Trim relief | Starting valueDisabled | What it controls and whyAllows trim relief with supported control law and valid telemetry. Axis authorities set its amount. |
| Elevator Authority | Starting value0.3 | What it controls and whyScales supported pitch-trim relief and permitted centre movement. Zero removes pitch response. |
| Aileron Authority | Starting value0.3 | What it controls and whyScales supported roll-trim relief and permitted centre movement. Zero removes roll response. |
| Force Trim Enabled | Starting valueDisabled | What it controls and whyLocal force trim is distinct from CowanSim's rotor trim and optional HeliSAS procedures; a reset command does not itself provide a physical neutral target. Local force trim is off. The stored latch parameters are inactive; the profile does not supply a local hold-where-left neutral. |
| GLoad Enabled | Starting valueDisabled | What it controls and whyAllows load-factor changes to modify permitted spring laws. Passive fly-by-wire feel can suppress it. |
| Rate Damping Enabled | Starting valueEnabled | What it controls and whyEnables rate damping with the configured coefficients and control law. |
| Autopilot follow | Starting valueDisabled | What it controls and whyAutopilot following is off; the configured spring and load retain the hardware feel. |
| Autopilot follow authority | Starting value0.05 | What it controls and whySets admitted AP-follow gain, not a percentage of travel. Runtime ownership and input limits still apply. |
| Autopilot neutral hold | Starting valueDisabled | What it controls and whyPermits centering hold during a supported AP state, separate from following a moving target. |
| Autopilot neutral hold strength | Starting value0.6 | What it controls and whySets admitted AP neutral-hold strength; inactive while neutral hold is disabled. |
| Enabled | Starting valueEnabled | What it controls and whyEnables aerodynamic cues; each still needs nonzero strength and its simulator conditions. |
| Gain | Starting value0 | What it controls and whySets stall-buffet strength. Zero removes the cue without changing simulator stalls or warnings. |
| Gain | Starting value0 | What it controls and whySets high-Mach buffet strength; onset and full-strength thresholds are separate. |
| Gain | Starting value0 | What it controls and whySets flap buffet at the configured position and speed gates. Flap movement texture is separate. |
| Maximum flap index | Starting value1 | What it controls and whySets the final flap index for detent normalization. UP plus three detents uses maximum index3. |
| Minimum flap index | Starting value1 | What it controls and whySets the first flap detent that admits buffet; this is a handle index, not degrees. |
| Gain | Starting value0 | What it controls and whySets gear aerodynamic buffet; movement and ground-contact cues are separate. |
| Shaker Enabled | Starting valueDisabled | What it controls and whyPermits shaker at supported warning conditions; the switch does not establish aircraft equipment. |
| Stick shaker amplitude | Starting value0.5 | What it controls and whySets triggered shaker strength; inactive while the shaker feature is disabled. |
| Enabled | Starting valueEnabled | What it controls and whyEnables ground effects; each still needs its own strength and contact or motion telemetry. |
| Gain | Starting value0 | What it controls and whySets rolling texture strength, modified by speed, surface and undercarriage configuration. |
| Gain | Starting value0 | What it controls and whySets gear-bump texture during ground motion, separate from touchdown impact. |
| Gain | Starting value0.5 | What it controls and whySets landing-impact strength; landing telemetry and response shape determine the pulse. |
| Gain | Starting value0 | What it controls and whySets reverse-thrust vibration with valid reverser and engine conditions. Zero removes the cue. |
| Enabled | Starting valueEnabled | What it controls and whyEnables engine cues with nonzero settings and valid running-engine telemetry. |
| Gain | Starting value0.06 | What it controls and whySets estimated engine vibration using configured telemetry and response, not measured cockpit vibration. |
| Enabled | Starting valueEnabled | What it controls and whyEnables accessory cues with configured strengths and observed accessory movement. |
| Gain | Starting value0 | What it controls and whySets texture from observed flap movement; a command without movement does not establish the cue. |
| Gain | Starting value0 | What it controls and whySets texture from observed gear movement, separate from aerodynamic and touchdown effects. |
Limits and open questions
- Cyclic longitudinal/lateral bindings and a hydraulic-system switch are documented; this does not quantify cyclic force.
- Spring/noncentering controller instructions do not calibrate the preset's cyclic force, damping or rotor-vibration amplitudes.
Physical validation
No physical force validation is recorded in this public catalogue for this revision. Documentary review and software checks do not establish how a particular device feels.