Rapid Descents - Advance acoustic IOTA 23 User Manual

Symmetric collapse ( frontstall )
After a spontaneous or A-riser provoked collapse the airflow breaks
away from the profile and the canopy will pitch back . The pilot swings
back underneath after a short delay . Wait, without applying brake, un-
til the wing is again above you and returns to normal flight . After a big
collapse reopening may be delayed, but do not forcibly encourage reo-
pening by the use of excessive brake, because of the risk of a fullstall .
Caution:
§ To simulate a front collapse all A-risers must be taken hold of
and pulled down .
§ After a very impulsively provoked front collapse in accelerat-
ed configuration ( for example during SIV training ) it can happen
that the front of the canopy does not open by itself . Help the
wing to open with a brief brake impulse by pulling the brakes
to 75% within one second, immediately and completely release
them, then be prepared to control the forward surge .

Rapid descents

For quick and efficient ways of getting down the ADVANCE test team
recommend big ears ( with or without speed bar ) or the spiral dive – the
choice depends on the situation .
Tip: Fast descents should be practised now and then in quiet
conditions – so they won't become emergencies when you need
them .
Symmetrical collapsing of the wingtips
( big ears )
The I OTA has split A-risers, which make it easy to apply big ears .
To do this pull both outer A-risers quickly down at the same time . The
wingtips will fold, and can be easily held in this position . To reopen re-
lease the risers; if the wingtips do not open by themselves a brake im-
pulse will help them .
Sink rate can be further increased by using the speedbar . Depending
on the situation the glider can be steered using weight shift .
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