Trouble with Datarefs and FDR Files

[aidant]

Hey all, I've got a weird problem and was wondering if anyone had insight into this particular situation. Basically, I am currently attempting to "construct" an FDR file from scratch, and then attempt to replay it in X-Plane 12. As for why, I am just curious about whether it could be done, and I didn't find anyone on the internet that talked about doing it before. I've managed to get the bare minimum working, such as position, heading, and altitude over time. However, I've run into a roadblock when trying to add control surface deflection and other animations to the model. I understand that, when being replayed in X-Plane, FDR files use datarefs to define these values. I've consulted the developer documentation on how to properly define these datarefs, but I'm running into errors where either the animations do not update on the flight model during the replay, or the replay itself throws an error at every second of the replay to the tune of "Requested x dataref, got 0.0".

Obviously this is a pretty esoteric scenario, but I was wondering if anyone else has interacted with this kind of stuff before. Any and all help would be greatly appreciated!

Here's some info about my X-Plane client, and the FDR file I'm working with is also attached to the post:

OS: Ubuntu LTS 18.02

Client: X-Plane 12.2.0

F16_TS_Data.fdr

[kshunz]

I'm also having trouble with some aspects of getting FDR files working, but I think there's a problem with the file you provided.  Each of the DATA lines should start with a Zulu time, and not have the "DATA" text.  I'm not sure how picky X-Plane is about the format of the time: I use something like "20:25:27" and it works.  [Reading your post again, perhaps I misunderstood.  Does X-Plane accept the format you're providing?]

I'm using the PA-18, and it mostly works.  But nothing I've tried will get the engine to run.  It flies around as it should, but the prop remains stationary, there's no engine noise, and the tach stays at zero.  I'm using the sim/cockpit2/engine/indicators/prop_speed_rsc[0], like in the example file, but it doesn't work.

Edited October 5 by kshunz