117-00008 Rev 3.0 Flightcell® DZMx Installation Manual
Page 57 of 75
Effective Date: 18 February 2022
DZMx Data Logging
The DZMx provides several data logging functions.
DZMx Flight Data Recorder
The DZMx has an inbuild flight data recording function that includes an inertial measurement unit
and barometric pressure sensor. The output from these sensors is logged at one second
intervals.
The following raw sensor data is logged:
»
Angular rotation in all 3 axes (radians per second, relative to the DZMx).
»
Acceleration in all 3 axes (G force, relative to the DZMx).
The inertial data is fused and logged to provide:
»
Airframe pitch (degrees).
»
Airframe roll (degrees).
»
Pressure (millibars).
»
Pressure altitude (reference to 1013.25 millibars).
Disclaimer
The Flight Data Recording system in the DZMx uses a six degree of freedom sensor fusion
technique and thus all pitch and roll values output are a best estimate based on measured
angular rate (prone to drift) and estimated gravity vector (which can be distorted by
accelerations). This must not be used for navigational or control purposes.
Setting up the Flight Data Recorder
To correctly estimate the pitch and roll of the aircraft using the DZMx, the unit’s rotational offset
relative to the
aircraft’s primary axes is required. DZMx Connect provides an interface to set those
parameters:
»
Using DZMx Connect go to
Flight > Flight Icon > Gear Icon
Note:
If the DZMx is not aligned to any of the aircraft axes, data readings will be incorrect
unless this step is performed at installation.
