5. light
The Jump Jet takes off vertically like a helicopter. Once airborne it can hover in one place
and the key to flying it successfully is in mastering this simple mode of flight. Once a pilot
can hover the aircraft other manoeuvres such as forward flight and turns come quite easily.
The Jump Jet will hover in one place if:
The Collective control is set to the right speed so that upward thrust from the propellers
matches the aircrafts weight. This allows the aircraft to maintain constant height.
The aircraft is exactly horizontal so that the propellers thrust is vertical. This allows
the aircraft to remain stationary with no horizontal movement.
If the aircraft tilts in any direction then it will also start to move horizontally in that direction
because a small portion of the propellers thrust will be pushing it that way. A tilt can arise
because of a disturbance such as a draft because the aircraft is not perfectly balanced
or because of a joystick control input. Having said that the Jump Jet is designed so that
tilts are quickly corrected automatically once the aircraft starts to move horizontally so its
natural tendency is to remain fairly still only drifting about quite slowly.
Before flying the Jump Jet please read Principle of Operation more carefully making
sure you know controller configuration you are using (Mode 1 or Mode 2) and be familiar
with the configuration. At any time when you lose control of the aircraft reduce the throttle
and allow it to land.
To maximise infrared transmission reliability, always point the controller
towards the Jump Jet when flying. Do not point the controller
downwards, especially if there are furnishings etc. between you and
the aircraft.
A. Taking Off
a. Check that the handset is switched OFF.
b. Switch on the aircraft by sliding the switch to the right (looking from the top). Keep
your fingers clear of the propellers. The motors should not start if they do switch off
the aircraft. Make sure the handset is off and no other Infrared source around before
switching it on again.
c. Place the aircraft on the floor. You need a room with at least 3 x 3m of open space;
place it in the middle of the open area. Choose a room free from drafts (close doors
and windows) and avoid direct sunlight and strong lighting as these can interfere
with the Infrared control.
d. Whilst standing about a metre behind the aircraft switch on the handset. The aircrafts
gyro sensors will then self-calibrate and it is very important not to move the Jump
Jet during this period. Once calibration is complete the indicator light on the PCBA
module will illuminate. ALWAYS SWITCH ON THE AIRCRA T BE ORE THE
HANDSET.
e. When you are ready gradually raise the collective control on the handset. The
propellers should all start to run but please note that the motors will not start unless
the collective stick has first been lowered to minimum; if it is partially raised then you
must lower it first.
f. The propellers should all start at roughly the same moment. If they dont you should
switch off the handset and follow the step to re-calibrate the gyros.
g. As the propellers approach take-off speed the Jump Jet will start to appear light
on the ground. At this stage give a decisive burst of power to lift the aircraft into the
air rather than letting it slide around on the floor.
h. Once in the air experiment with the collective control to find the setting where the
aircraft hovers. Do not fly too high at first! Remember that the controls work in relation
to the aircraft itself so if it turns to face you the controls will seem reversed.
i. New pilots should set the handset Flight Mode switch to 1. This will make the direction
controls easier to use. Once experience has been gained set the switch to 2 for
maximum manoeuvrability.
