Installation / Operation Manual
anemoi
02.04.2022 | V1.02
-23-
Due to physical constraints, the quality and reliability of the indicated wind vector has small variations
depending on flight phases.
Right after takeoff: Live wind is very reliable, as the takeoff roll has given the inertial measurement
platform an ideal opportunity to perfectly align.
Normal soaring maneuvering with occasional heading changes (10° or more) or airspeed changes (20
km/h or more) every 2-4 minutes: Live wind is reliable for decision taking, as the occasional slight
changes in flight state can permanently keep the IMU aligned.
Circling: Live wind is almost 100% reliable. This is the best-case scenario because the IMU is
continuously being kept aligned.
Mid-Flight switch-on or reboot: Live wind initially only correctly represents head / tailwind component.
Once a full turn or 3-4 heading changes of 30° or more have been flown, the IMU is aligned again to
correctly capture the full wind vector.
After a long, steady, unaccelerated straight flight in smooth air (20 km or more): Live wind is not fully
reliable as the errors that slowly build up in the IMU cannot be fully distinguished from changes of the
wind vector anymore. When in doubt, e. g. before approaching a new ridge after a very long smooth
glide, it is recommended to fly 3-4 heading changes of 10° or more to allow for the IMU to re-align.
Live wind will immediately update to indicate the correct wind vector. Note that such small maneuvers
are usually unconsciously done on a regular basis (every few minutes, which is fully sufficient) by
soaring pilots trying to find the best energy line, even during long glides.
6.5
Setup Menu
Holding the push button for 2 seconds on any of the three main pages opens the setup
menu, seen in
Figure 6-5. By pressing the push button, one can navigate through the menu, holding the push button
starts the respective operations.
Figure 6-5: Setup menu
Calibrate PRS
Rotate Screen
Disable AHRS
Align DOF
Press to
select
Hold to
enter
Exit
