Draganfly DRAGANFLYER X8, Руководство пользователя

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After landing immediately stop the rotors by holding the throttle to its lowest
position and simultaneously holding the Rotor- Engage/Disengage switch down
for at least 3 seconds. This stops the rotors from spinning but does not disarm the
helicopter.
To disarm the Draganflyer X8 is a very simple process. Ensure left joystick is at
its lowest position and move it to the lower left corner and hold for 5 seconds or
until the LED lights start flashing.
Draganflyer X8 GPS System
The Draganflyer X8 is equipped with state of the art GPS technology. This GPS
technology allows the Draganflyer X8 to hold its position, for up to the run time of the
battery, without pilot intervention. There are some conditions beyond the control of the
Draganflyer X8 that affect GPS performance. It is important the user understand these
conditions for safe and successful operation of the Draganflyer X8 helicopter.
It is the responsibility of the pilot to observe the Draganflyer X8 in position
hold and, if necessary, take control manually for continued safe flight. If at
any time the GPS hold function appears to be not functioning properly or the
helicopter is flying in circular oscillations immediately switch to Altitude
Flight mode.
Under ideal conditions the Draganflyer X8 should acquire a GPS lock in 2 to 3 minutes.
There is a backup battery to power the GPS module during battery changes between
flights, this will allow the helicopter to have a GPS lock as soon as it is turned on. The
backup battery will run the GPS for approximately 45 minutes. After not being used for a
few days the backup battery will be fully depleted and will need to charge before the GPS
module will start operating, this is called a “cold start” and may take between 5 and 15
minutes to acquire a GPS lock.
GPS Lock Quality
The quality of the position information provided by a GPS module is subject to a number
of conditions. Most significant among these are the number of satellites and the
geometry of the satellite constellation.
To provide a 3D position a minimum of 4 satellites must be tracked by the GPS module.
In practice this value is insufficient for an accurate position hold, so the Draganflyer X8
will not allow a position hold to be attempted while tracking less than 6 satellites.
Equally important is the shape of the satellite constellation, that is, where the satellites are
located relative to the GPS module. The best constellation shapes are well spread out
with satellites near the horizon. Constellations that are clumped together or in-line
provide poor information. These factors are used by the GPS module to calculate a term
called PDOP (Positional Dilution of Precision). PDOP has an ideal value of 1 with
Draganflyer X8 – Users Manual
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07/13/11 Ver 11-01 e