Replays of helicopter flights look weird: Difference between revisions

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== Problem ==
When recording and replaying helicopter flights with the new flight recorder, the replay looks weird. The flight path appears to seem edgy and the helicopter performs maneuvers which are physically impossible.
When recording and replaying helicopter flights with the new flight recorder, the replay looks weird. The flight path appears to seem edgy and the helicopter performs maneuvers which are physically impossible.


== Reason ==
== Reason ==
The new flight recorder in it's default configuration only records the last 60 seconds of the flight in full data resolution. Everything older is stored in a compressed format and interpolated during replay, which leads to unnatural motion patterns of helicopters in the replay before the last 60 seconds.
The new flight recorder in it's default configuration only records the last 60 seconds of the flight in full data resolution. Everything older is stored in a compressed format and interpolated during replay, which leads to unnatural motion patterns of helicopters in the replay before the last 60 seconds.


== Solution ==
== Solution ==
Change the configuration of the flight recorder in preferences.xml to keep a bigger amount of data uncompressed.
Change the configuration of the flight recorder in preferences.xml to keep a bigger amount of data uncompressed.


== Caveats ==
== Caveats ==
Uncompressed data takes more memory than compressed data. As an example, the BK117 requires about 1MB per minute of uncompressed data recording.
Uncompressed data takes more memory than compressed data. As an example, the BK117 requires about 1MB per minute of uncompressed data recording.


== Example ==
== Example ==
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== Related content ==
=== Wiki articles ===
* [[Instant Replay]]
=== Readme files ===
* {{readme file|flightrecorder}}


== See also / related ==
[[Category:Howto]]
* [[Instant_Replay|Flight recorder main article]]
* Flight Recorder Mini-HOWTO:  {{readme file|flightrecorder}}

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