Acrobatic Flying - Ozone Mojo 2 Betriebshandbuch

INCIDENTS
Deep Stall / Parachutal stall
It is possible for gliders to resume their normal shape on a very slow release of the B-
lines, but carry on descending vertically and without full forward motion. This situation
is called 'deep stall' or 'parachutal stall'.
It is unlikely to happen on any Ozone glider, but should it happen, your first reaction
should be to fully raise both brakes and the glider should return to normal flight. If
nothing happens after a few seconds, reach up and push the A-risers forwards or
apply the speed bar to regain normal flight.
Ensure the glider has returned to normal flight (check your airspeed) before you use
the brakes again.
IMPORTANT : Only a few cms of input from your brakes can maintain your wing
in the stall. Always release your wraps if you have taken them!
Deflations
Due to the flexible form of a paraglider, turbulence may cause a portion of the wing
suddenly to collapse. This can be anything from a small 30% (asymmetric) collapse to
a complete (symmetric) collapse.
If you have a collapse, the first thing to do is to control your direction. You should fly
away from the ground or obstacles and other pilots, or at least not to fly into them...
Asymmetric collapses can be controlled by weight shifting away from the collapse and
applying a small amount of brake to control your direction. This act will most of the
time be enough for a full recovery of the wing
.
Once a glider is deflated it is effectively a smaller wing, so the wing loading and stall
speed are higher. This means the glider will spin or stall with less brake input than
normal. In your efforts to stop the glider turning towards the collapsed side of the wing
you must be very careful not to stall the side of the wing that is still flying. If you are
unable to stop the glider turning without exceeding the stall point then allow the glider
to turn whilst you reinflate the collapse.
If you do have a deflation, which does not spontaneously reinflate, make a long
smooth progressive pump on the deflated side. This pumping action should take about
2 seconds per pump. Pumping too short and fast will not reinflate the wing and pump-
ing too slow might take the glider close to, or beyond, the stall point.
Symmetrical collapses reinflate without pilot input, however 15 to 20cm of brake
applied symmetrically will speed the process. If you simulate a symmetrical collapse
during an SIV course it is important to use both the A and Baby A risers and to pull
evenly to induce a symmetrical collapse, and not use the brakes too early to reinflate
(this may lead to a parachutal stall) . Use of just the centre A risers or an uneven pull
may lead to the glider collapsing only in the middle section with the tips flying forward
to meet in the middle, increasing the risk of a cravat occurring.
If your Mojo 2 collapses in accelerated flight, immediately release the accelerator to
slow down to trim speed and after a 90 deg turn the canopy will reinflate and return to
normal flight.
Cravats
When the tip of your wing gets stuck in the lines, this is called a 'cravat'. This can
make your glider go into a spiral, which is difficult to control. The first solution to get
out of this situation is to stabilize the glider into normal flight and then pull down the
stabilo line (red line on the B-riser), whilst maintaining control of your direction. You
must be careful with any brake inputs or you may stall the opposite wing.
If this doesn't work, a full stall (symmetrical or asymmetrical) is the only other option.
This shouldn't be done unless you have been taught how to do it and can only be done
with a large amount of altitude. Remember if the rotation is accelerating and you are
unable to control it, you should use your reserve whilst you still have enough altitude.
IMPORTANT : A bad preparation on launch, aerobatic flying, flying a wing of too
high a level or in conditions too strong for your ability, are the main causes of
cravats.

ACROBATIC FLYING

The Mojo 2 has been designed as an XC wing and is not suitable for acrobatic
manoeuvres.
A specific standard of certification for acrobatic flying has not been set up yet. Ozone
wings although designed to the highest specifications are, therefore, not certified for
this type of flying. As acrobatic manoeuvres are very difficult and incorrectly performed
manoeuvres can put abnormal stresses on the glider and lead to loss of pilot control,
Ozone strongly recommend you do not undertake this style of flying.
TOWING
The Mojo 2 may be tow-launched. It is the pilot's responsibility to use suitable harness
attachments and release mechanisms and to ensure that they are correctly trained on
the equipment and system employed. All tow pilots should be qualified to tow, use
a qualified tow operator with proper, certified equipment, and make sure all towing
regulations are observed.
When towing you must be certain that the paraglider is completely over your head
before you start. In each case the maximum tow force needs to correspond to the
body weight of the pilot.
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