flybywiresim / aircraft

The A32NX & A380X Project are community driven open source projects to create free Airbus aircraft in Microsoft Flight Simulator that are as close to reality as possible.
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ND: GS & TAS values blank if no computed data #9545

Open BravoMike99 opened 5 days ago

BravoMike99 commented 5 days ago

Aircraft Version

Development

Build info

master

Describe the bug

TAS & GS on the ND appear blank if NCD (no computed data), e.g. TAS at low airspeeds.

Expected behavior

TAS & GS value should be dashed if No computed data (NCD) and blank if invalid.

Steps to reproduce

1) Spawn on the ground with engines running and observe TAS value being blank on the ND.

References (optional)

Real world example: image

Additional info (optional)

No response

Discord Username (optional)

bruno_pt99

beheh commented 4 days ago

To whoever implements this, note: There might be states where these are supposed to be blank. For example, check what it should look like before IRSes are aligned. If you just change the default from always being empty to always having dashes that might not be correct.

MrJigs7 commented 4 days ago

From the references I could find, it seems TAS is dashed during IRS alignment at least on the A320. Can anyone confirm its also the same for the A380? If so looks like the GS and TAS should follow the same logic as the wind display?

lukecologne commented 4 days ago

TAS is not necessarily the same, since it is not NCD during alignment (which is not relevant for the ADR), but is NCD when below 60kts TAS. Furthermore, all wind indications are NCD below 100 kts TAS, in addition to being NCD during alignment

lukecologne commented 4 days ago

In any case, the display logic is simple: Dashes if NCD, blank if FW, and normal otherwise