AFM 4-2
Failsafes
Rally Points
There are several failsafe mechanisms present on Lynx that will automatically activate to return the
aircraft to a specified location. All failsafes will change the flight mode to rally regardless of what the
previous flight mode was. Once in rally mode the aircraft will proceed to the nearest rally point that is
within 5km, or proceed to the home location. If using a rally point, the aircraft will try to climb or
descend enroute to the rally point’s altitude. Alternatively, if heading towards home, the aircraft will
fly to an altitude of 100 meters above home.
Battery Failsafe
A battery failsafe will activate once the flight battery has been below 16.7V for more than 5 seconds.
This gives the operator a very small margin (approximately 5 minutes) to land the aircraft while
remaining within safe battery margins.
GCS failsafe
A ‘GCS failsafe’ will activate if the aircraft has not received any data from the GCS within the last 20
seconds. The GCS failsafe will cause the aircraft to enter the rally flight mode, thereby moving the
aircraft closer for better radio signal.
RC Failsafe
Loss of the safety pilot’s (RC) link will activate the RC failsafe if the aircraft was in any flight mode
other than manual. The failsafe timer can be configured in Swift GCS settings. RC failsafe will cause
the aircraft to enter the rally flight mode. If the safety pilot is under manual control and RC link is lost,
the failsafe action will cause the aircraft to immediately circle in place until the 20 second window
has expired - at which point it will transition to rally.
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