Fullstall; Flying Without Brakes - SKY PARAGLIDERS atis 4 Handbuch

9) Full Stall
Certain 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).
 a soaked or heavily drenched leading edge (from rain or a cloud) can
result in a stall due to uneven airflow over the leading edge. Reported
cases of this phenomenon are linked to high levels of porosity in the
glider's fabric. Whatever the cause, a full stall can be either symmetrical or
asymmetric (a spin).
In both cases the pilot has two possible courses of action:
 if the full stall happens above 100 m it is strongly recommended 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 unfamiliar with stall
recovery the reserve parachute should be deployed immediately.

10) Flying Without brakes

if a brake line or pulley breaks it is possible to fly the atis 4 using the D risers
(rear risers). 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!
11) Comments on the testing Procedures
all manoeuvres were carried out over water in a stable air mass with standard
temperature, humidity and pressure. they were carried out by professional
pilots trained to react to any problem in the most appropriate manner.
test reports are available on the website: www.sky-cz.com.
12) harness Adjustments
For test flights the pilots used aBs harnesses with the following set-up:
Distance from seat
size Distance between hang points
board to hang points
atis 4 s 41–42 cm
atis 4 M 42–43 cm
atis 4 L 43–44 cm
atis 4 XL 44–45 cm
We recommend the use of a harness with adjustments as close as possible
to those used during the homolgation tests. Excessive cross-bracing
(chest strap very tight) increases the risk of risers twisting during certain
manoeuvres. a looser setting may result in a tendency to fall towards the
collapsed side. Lower hang-points reduce the roll-stability of your harness
and can slow reopening of asymmetric collapses. Higher hang points
(+ 2–4 cm) have no influence on in-flight safety and can therefore be
tolerated.
42–43 cm
43–44 cm
44–45 cm
45–46 cm
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