Description
The model should prescribe a uniform
figure 8 at a slow pace with consistent height
and be correctly centred. The circuit may be
flown with the model in forward or backward
flight.
Preparation
This should begin with checking your
inverted flying skills. It is important to be able
to keep the model moving smoothly in any
desired direction. The first exercise I would
suggest is to try flying a single remote circle
in front of you. Aim for a diameter of 10 to 20
metres. If you are flying nose first then back
elevator is required to remove forward, or in
the case of backward flight, forward elevator
will get the model moving. In the case of roll
(aileron), this is unchanged from upright flight
as you view the model. Tail rotor control is
probably the most confusing, as it is reversed
as you view the model when inverted. The
aim with this first remote circle is to produce
a smooth, consistent result that retains height
and a steady speed throughout.
With this completed, the next step is to
repeat this remote inverted circle but now
flown in the opposite direction. The previous
circle will probably have been in your
preferred direction so you may now be
presented with quite a challenge! All the
previous advice does, of course, apply to this
‘reversed’ circle but with practice it should
prove achievable.
Before moving on to the full figure 8
manoeuvre, I would recommend positioning
one circle off to one side and finally the
‘reversed’ circle practiced to the other side.
When you are completely happy flying both
remote circles in their correct position, the
final step is to complete the crossover as
shown in the diagram.
Possible Problems
Maintaining a slow, steady speed
throughout the figure 8 often proves difficult,
especially with wind present. Height control
may also give problems in this case. I would
suggest aiming for a height of about 1.5
metres – with the model lower than this; you
may have problems as the model moves in
and out of ground effect.
Careful tail control will be needed to
ensure the model’s heading is correct at all
positions through the figure 8. Tail control will
be important as the speed should be quite
slow, implying good rudder control will be
necessary to produce an accurate figure 8.
I would suggest establishing the model in
the manoeuvre to give you a feel for
prevailing conditions before your caller
indicates the start point. The start/stop point
is not specified, but I would suggest the
crossover point that should be on the
centreline would give a good impression to
the judges. |