B-Line Stall; Incidents; Asymmetric Or Frontal (Symmetric) Collapses; Stalls - SKY PARAGLIDERS ZORRO Serie Manuel

increase. The angle and speed of rotation can be decreased
or increased by releasing or depressing the brake by several
centimetres respectively. Once mastered the spiral dive allows
you to descend at rates greater than 10 m/s. Extremely abrupt
or badly synchronised brake inputs or too-rapid initiation of
the spiral may result in an asymmetrical collapse and/or a spin.
CAUTION: A deep spiral is a radical manoeuvre. The kinetic
energy generated must be dissipated by slowly releasing the
inside brake throughout, at least, one whole revolution.

5.3 B-line Stall

Grasp the B risers near the quick links, hands on the Yellow
sections, and ease them down symmetrically. Do not snatch
them down. The paraglider will enter a B-line stall and feel to
drop backwards before the pilot stabilises underneath the wing.
The descent rate increases to 6 - 8 m/s. To exit the B-line stall
raise both hands together in a single, positive movement so
that the risers are at normal full extension again. On releasing
the B-risers, your ZORRO should return immediately to normal
flight. An adjustment error, control error or certain aerological
conditions may lead to a prolonged deep stall phase. A push
on the speed bar should initiate rapid exit from the B-line stall
state. If the speed bar is not connected, pulling on the A-risers
by 4 – 5 cm will have the same result.
CAUTION: Unlike big ears and spiral dives (see above) a glid-
er in a B-line stall is in a true stalled position. For this reason,
a B-line stall should never be performed close to the ground.

6. INCIDENTS

6.1 Asymmetric or Frontal (Symmetric)
Collapses
Despite tests showing that ZORRO recovers spontaneously af-
ter collapses, active piloting is recommended in the event of an
asymmetric or frontal collapse. Active piloting will reduce the
loss of altitude and a change of direction.
If any unstable incident such as wing collapse, stall or spin
is encountered whilst flying in accelerated mode, it is recom-
mended to return the speed bar and trimmers to the standard
setting to assist recovery.
In the event of a frontal (symmetric) collapse:
• Before automatic reopening occurs, bring both brakes
down swiftly & symmetrically to speed up reopening of the
leading edge, then immediately bring your hands back up
to normal flying position.
In the event of an asymmetric collapse:
• Keep the wing flying as straight as possible by leaning
away from the collapsed side and applying sufficient (just
enough, not too much) brake to maintain course.
• Speed up the reopening of the closed side by a single,
positive input on the brake of the collapsed side & repeat if
necessary.
• If flying at maximum speed (trimmers and accelerator)
ZORRO will exit the collapse with larger amounts of inertia.
The accelerator should immediately be released and
trimmers closed and the pilot should be ready to anticipate
the resulting forward pitch of the wing and damp any surge
appropriately with the use of the brakes to avoid a further
collapse of the leading edge.

6.2 Stalls

Certain pilot behaviour or weather conditions can cause a full
stall. This is a serious deviation from normal flight and can be
difficult to manage. If a stall occurs at less than 100 m above
the ground, throw your reserve parachute.
Main Causes of a Full Stall:
• Poorly timed or excessive use of the brakes when the air
speed of the wing is reduced (e. g. when coming out of a
spiral or speeding up after a B-line stall).
Zorro
User manual / Handbuch / Manuel / Návod k obsluze
Rain-induced deep or Full stall:
• A soaked or heavily drenched leading edge (from rain or a
cloud) can result in a full stall or Deep stall due to uneven
airflow over the leading edge as a result of rain drops and
an increase of weight to the wing. Reported cases of this
phenomenon are linked to high levels of porosity in the
glider's fabric. Whatever the cause, a stall can be either
symmetrical or asymmetric (a spin). In both cases the
brake line travel becomes very short and even small input
may suddenly induce an airflow separation; in some cases
even a gust or a sudden thermal may change the angle
of incidence enough to cause the deep stall. If you find
yourself flying in unavoidable rain we strongly recommend
that you avoid any sudden movements or radical brake line
input, that you do not pull Big Ears or B-stall, and that you
steer clear of turbulence and avoid a deep flare on landing.
In both cases the pilot has two possible courses of action:
• If the full stall happens above 100 m it is strongly recom-
mended to initiate standard stall recovery assuming the
pilot is familiar with the process (i.e. a complete execution
of the full stall, stabilization of the wing and progressive
lifting of the hands to resume normal flight).
• If the full stall happens below 100 m or if the pilot is unfa-
miliar with stall recovery the reserve parachute should be
deployed immediately
6.3 Brake line malfunction
If a brake line or pulley breaks it is possible to turn ZORRO
using the tip steering controls. Alternatively, the D risers (rear
risers) may also be used to turn. In this case the movements
should be finely controlled as the deformation of the wing due
to the traction on the D risers is greater than that produced by
using the brakes.
Tip: Practice this method of steering to be prepared before
a real brake failure!
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