Reely Gravity FPV RtF, Operating Instructions Manual

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11. Information about first take-off
To make the explanation of the controls simpler and more consistent, the classic terms are used here.
These come from aviation language and are widely used.
Direction designations are always to be understood from the perspective of a "virtual" pilot in the model.
The two red LEDs in the body are used as direction pointers and mean "back".
The "roll" and "nod" functions (see explanations below) are activated
using the position sensors of the hand-held transmitter.
This is why it is important that before every start the hand-held trans-
mitter is not tilted forwards/backwards or to the left/right but lies hori -
zontally in the hand (see picture 5).
Otherwise, the model would hover in the direction in which the hand-
held transmitter points.
a) Hover flight
Hovering is defined as the flight condition at which the quadrocopter neither ascends nor descends and thus the
upward directed buoyancy force is equal to the downward force of gravity.
Start the rotors by pushing the control lever (picture 4 or 6, item 4) from top to bottom on the hand-held transmitter
until you hear a control tone. Hold the hand-held transmitter horizontally (see also figure 5 and the previous notes).
Push this control lever forward. This increases the motor speed and causes the quadrocopter to ascend. When you
pull the control lever backwards, the quadrocopter descends. If you leave the control lever in the central position, the
quadrocopter will try to maintain the same altitude with its built-in sensors.
Figure 6
During a flight just above the ground as during takeoff, turbulence and air currents are created that can af-
fect the quadrocopter. This results in a faster response time to the control movements and a slight forward,
back or side swerve of the quadrocopter.
This so-called ground effect is no longer present from an altitude of about 50 cm.
Figure 5
4