Hydraulic system¶
From the README¶
The hydraulic system now has a pump that draws power when it actuates. You can hear it work when you use the flaps, brakes, or nosewheel steering. It took a bit of trickery to work around sim limitations (or maybe dev limitations, can't be sure) and I haven't figured out how to prime the hydraulics, so every flight starts with an empty system and an invisible mechanic using the hand pump.
- Rebuilt hydraulic system using EX1.
- Added brake isolation valve to preserve some brake functionality on system failure.
- Added emergency hand pump to EFB Systems tab to manually restore hydraulic pressure and to prime the system when state is restored.
- Changed brake and sys pressure gauges to show actual values.
- Pump inrush: the hydraulic pump now pulls a brief power surge when it cuts in, before settling to its running draw — visible on the loadmeter.
- System pressure regulation and pressure-gauge calibration carry small per-variant offsets.
From the release notes¶
Verbatim from docs/release-notes-*.md, grouped by the section they appeared in. The tag is the version each item first appeared in.
[NEW] Hydraulic system¶
- Rebuilt hydraulic system using EX1. (v2024.2.x)
- Added brake isolation valve to preserve some brake functionality on system failure. (v2024.2.x)
- Added emergency hand pump to EFB Systems tab to manually restore hydraulic pressure and to prime the system when state is restored. (v2024.2.x)
- Changed brake and sys pressure gauges to show actual values. (v2024.2.x)
Cockpit & systems¶
- Fixed rudder pedal axis jitter driving the nose wheel steering actuator, triggering a ridiculous amount of hydraulic pump runs. (v2024.3.183)
Hydraulics¶
- Pump inrush. The hydraulic pump now pulls a brief power surge when it cuts in before settling to its running draw, visible on the loadmeter. (v2024.3.68)
- As part of the ongoing work to add individualization to airframes, the system pressure regulation and the pressure-gauge calibration now carry small per-variant offsets. (v2024.3.68)
- The pump cycles less often during routine flap, brake and nose-wheel-steering use (actuator volumes retuned). Feedback is welcome. (Still too frequently?) (v2024.3.68)
L:vars¶
Variables worth binding to hardware, driving from FSUIPC / Axis&Ohs / SPAD.neXt,
or reading on an external display. R is read-only state; R/W can be set.
This is a selection, not the full list — the aircraft defines around a thousand
DHC6_* names, most of them internal.
| L:var | R/W | Meaning |
|---|---|---|
DHC6_HYD_PUMP_RUN |
R | Hydraulic pump currently running — the cycling you hear |
DHC6_HAND_PUMP |
R/W | Emergency hand pump. No cockpit control — EFB Systems tab or a binding only |