Drag Inducers; B-Line Stall - Ozone ATOM Betriebshandbuch

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DRAG INDUCERS (BIG EARS)
Folding in the tips increases the sink rate of your glider. This is useful for staying
out of cloud or descending in strong winds. You 'pull big ears' by drawing in the
outermost A-lines until the tips of the wing fold under and drag behind. OZONE
gliders are fitted with split A-risers to make this procedure easy.
To increase the sink rate further the accelerator bar may be employed, but pull
the tips in first. Remember that when the tips are in, you have reduced the area
of wing supporting you, so your stall speed will have increased. Be sure to keep
speed on and not to use the brakes other than cautiously for reinflation. For direc-
tional control while using the drag inducers, you should rely on weight shift alone.
To reopen the wing tips, release the small A-risers. Normally the tips will reinflate
automatically, but you can help the process by careful use of the brakes. This is
best done one tip at a time to minimise the chance of inducing a stall. You will find
that there is surprisingly little tendency for the glider to deviate during the process.
CAUTION: Do not use Drag Inducers near the ground.

B-LINE STALL

B-stall is used for fast descents in emergency situations only. B-stall is performed
by symmetrically pulling down on the B-risers. This takes quite a lot of effort. The
best way to do this is to place your fingers between the lines above the maillons
at the top of the risers. You should not release the brake handles while B-stalling.
As you first pull the B-lines down the airflow over the wing is broken and the glid-
er loses its forward speed but remains open. By pulling the B-risers further the
sink rate can be increased as the chord is effectively reduced.
To exit the B-stall the B-risers should be returned to their normal flight position
symmetrically in one smooth progressive motion. The glider should then resume
normal forward flight without further input. Always be sure of this before using the
brakes again.
It is possible for the wing to resume its normal shape on release of the B-lines,
but to remain in steep descent without full forward motion. This is called 'deep
stall'. It is unlikely to happen on OZONE gliders, but you should be aware of the
possibility. If you suspect it has happened, simply push the A-risers forwards until
normal flight returns. Only then should you use the brakes again.
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