4DRC 4D-M1 Operating Instructions Manual - Page 10
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When the aircraft is in 1m from the ground, the aircraft will become unstable due to the
Warning
influence of its own blade vortex, which is called "ground effect response". The lower the
height of the aircraft, the greater the effect of the ground effect response.
14. Introduction to the APP application and remote control function operation:
14.1 Headless mode
The front of the aircraft when the code-matching is turned on is by default the front in headless mode; if it is
necessary to adjust the direction, please turn on the code-matching again, and short press the remote controller
"headless mode" function key (Figure 14). When exiting, please tap gently press this function key again.
Special prompt: Please make sure the aircraft is aligned with the straight line and let the gyroscope
automatically detect the straight line, and the headless mode of straight line flight can be realized.
14.2 One key return
Press the one-key return button
(Figure 14). (The aircraft will automatically rise to a safe altitude when it is flying below the safe altitude) and then land
slowly. If there are obstacles during the landing, press the one-key return button again to turn off the return operation
and avoid by the manual control joystick, pull down the throttle lever to land.
APP operation: Click the "one-key return" icon (Figure 15) in the APP control interface, you can also return the aircraft;
during the return flight, click this icon again to cancel the return.
Figure 14
Runaway return: When the signal of the remote controller is interrupted for about 4s, the aircraft will
automatically return to the place where there is a signal and stop.
Warning
Low battery return: when the aircraft is in low battery electricity, it will forcefully return to a place that
is 20m above the take-off point. The return flight cannot be cancelled during the low battery return.
14.3 Speed switching
Speed adjustment wheel: when it turns right, the remote control will "beep" twice to enter the high
speed mode, and when it turns left, the remote control will "beep" once to enter the low speed mode
(Figure 16).
APP operation: Click the "More Functions" icon (Figure 17) in the APP control interface, and the flight
speed can also be switched (Figure 18).
Figure 16
Left
Figure 13
, the aircraft will return to the place above the geomagnetic calibration position
Figure 15
Figure 17
09
Front
Left
Right
Rear
One key
return
Front
Right
Rear
End point
Figure 18