Draft — this page has not been reviewed yet.
Pitot-static¶
The altimeter and VSI read static pressure; the airspeed indicator reads the difference between pitot and static. Pitot heat is covered under Ice protection.
From the README¶
Redistributed from the former Cockpit instruments page.
- Implemented Captain-side altimeter with aneroid simulation, a servo motor that drives needle and drum with realistic latching mechanism, the baro knob is mechanically linked. Based on IDC Encoding Altimeter 28V.
- Added calibration differences between mirrored instruments (altimeters, HSI, RMI).
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.
Cockpit instruments¶
- [NEW] Implemented Captain-side altimeter with aneroid simulation, a servo motor that drives needle and drum with realistic latching mechanism, the baro knob is mechanically linked. Based on IDC Encoding Altimeter 28V. (v2024.2.x)
Plans¶
- Pitot-static system (v2024.2.x)
Instruments & controls¶
- Calibration errors. Work has started on inducing variations between mirrored instruments (altimeters, HSI, RMI). (v2024.3.47)
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_ALT_CPT_DISPLAYED |
R | Captain's altimeter as displayed — servo lag and latching included |
DHC6_ALT_CPT_ANEROID |
R | The aneroid's own reading, before the servo |
DHC6_ALT_CPT_DRUM_1000 |
R | 1000 ft drum position |
DHC6_ALT_CPT_DRUM_10000 |
R | 10000 ft drum position |
DHC6_ALT_FO_BIAS_FT |
R | FO altimeter calibration offset from the captain's |