the vehicle does not follow its intended path after the transition phase, a RTL should be commanded. If the
vehicle does not adequately perform the RTL procedure (continues to lose altitude or fails to navigate back)
a LAND instruction should be given. After a LAND instruction was given, and the vehicle is commencing a
landing in quadcopter mode, the RTL instruction can be given again to have the vehicle return in quadcopter
mode. This should only be attempted when the vehicle is less than 1km from the takeoff site and more then
70% f th b tt
it i
il bl
The reason this can occur can be related to a failure of the servo actuation or incorrect mission loaded.
Excessive pitch
Operator action: Increase cruise throttle / Return
The DeltaQuad should cruise at an average pitch angle between 3 and 9 degrees unless a change in
altitude was commanded. If the pitch angle consistently exceeds 12 degrees while the vehicle is not
attempting to climb to a higher altitude the cruise throttle should be increased. Increasing the cruise throttle
can be done by changing the parameter as described in the
. This parameter can be
changed during flight. If this does not resolve the problem the flight should be aborted by issuing an RTL
command.
Note: When changing the cruise throttle during flight special care must be taken to monitor the battery level.
The reason for this could be related to
, over weight, too low
or a problem
with the fixed wing drive. To resolve this attempt to level the vehicle as described in the sensor calibration
section, verify the weight or increase the cruise throttle. If the problem persists please contact Vertical
Technologies support.
Battery level and current consumption
Operator action: Return
The battery level percentage indicated in the top bar of the flight screen should be monitored throughout the
flight. the percentage should always be higher than the relative distance the vehicle still has to travel. For
example, if only 50% battery remains, more than 50% of the mission should have been completed. The
CURRENT and CONSUMED values will also help determine this. The DeltaQuad should draw between 9
and 15 Amperes of current on average during cruise flight. This value increases;
The vehicle is flying significantly above sea level
If the vehicle is flying with maximum payload.
As the battery percentage drops.
When the vehicle is climbing or banking.
When the cruise throttle is set higher.
When the LiPo gets older.
When a power consuming payload is active.
Ground speed
Operator action: Increase cruise throttle
The DeltaQuad will generally maintain a constant speed through air, but wind conditions will impact the
effective ground speed. If the ground speed drops below 6 m/s the cruise throttle should be increased.
Increasing the cruise throttle can be done by changing the parameter as described in the
. This parameter can be changed during flight.
Note: When changing the cruise throttle during flight special care must be taken to monitor the battery level.
