Niviuk KOYOT 4, User Manual

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does not, try to weight-shift towards the collapsed side. If this does not 
resolve the issue, pull the brake handle on the collapsed side decisively 
and quickly all the way (100%) down and release it back up immediately. 
You may have to repeat this action to provoke the re-opening of the 
collapsed glider side. Do not over-brake or slow down the flying side of 
the wing (control the turn). Once the collapsed side is open make sure you 
return to normal flying speed.

Frontal collapse
Due to the KOYOT 4 ’s design, in normal flying conditions frontal 
collapses are unlikely to take place. The wing’s profile has great buffering 
abilities when dealing with extreme incidence changes. A frontal collapse 
may occur in strong turbulent conditions, entering or exiting powerful 
thermals. Frontal collapses usually re-inflate without the glider turning, but 
a symmetrically applied quick braking action with a quick deep pump of 
both brakes will accelerate the re-inflation if necessary. Release the brake 
lines immediately to return to default glider air speed.

Negative spin
A negative spin does not conform to the KOYOT 4 ’s normal flight 
behaviour. Certain circumstances however, may provoke a negative spin 
(such as trying to turn when flying at very low air speed whilst applying 
a lot of brake). It is not easy to give any specific recommendation about 
this situation other than quickly restoring the wing’s default air speed 
and angle of attack by progressively reducing the tension on the brake 
lines. The normal wing reaction will be to have a lateral surge on the re-
accelerated side with a rotation not greater than 360º before returning to 
default air speed and a straight flight path trajectory.

Parachutal stall
The possibility of entering or remaining in a parachutal stall have been 
eliminated from the KOYOT 4 .
A parachutal stall is virtually impossible with this wing.  If it did enter into 
a parachutal stall, the wing loses forward motion, becomes unstable 
and there is a lack of pressure on the brake lines, although the canopy 

appears to be fully inflated. To regain normal air speed, release brake line 
tension symmetrically and manually push on the A-lines or weight-shift 
your body to any side WITHOUT PULLING ON THE BRAKE LINES.

Deep Stall
The possibility of the KOYOT 4 stalling during normal flight is very unlikely. 
It could only happen if you are flying at a very low air speed, whilst over-
steering or performing dangerous manoeuvres in turbulent air.

To provoke a deep stall, the wing has to be slowed down to its minimum 
air speed by symmetrically pulling the brake lines all the way (100%) down 
until the stall point is reached and held there. The glider will first pitch 
rearward and then reposition itself overhead, rocking slightly, depending 
on how the manoeuvre is done. 

When entering a stall, remain clear-headed and ease off the brake lines 
until reaching the half-way point of the total brake travel. The wing will 
then surge violently forward and could reach a point below you. It is most 
important to maintain brake pressure until the glider has returned to its 
default overhead flying position.

To resume normal flight conditions, progressively and symmetrically 
release the brake line tension to regain air speed. When the wing reaches 
the overhead position, the brakes must be fully released. The wing will 
then surge forward to regain full air speed. Do not brake excessively at 
this moment as the wing needs to accelerate to pull away from the stall 
configuration. If you have to control a possible frontal collapse, briefly 
pull both brake handles down to bring the wing back up and release 
them immediately while the glider is still in transition to reposition itself 
overhead.

Cravat
A cravat may happen after an asymmetric collapse, when the end 
of the wing is trapped between the lines. Depending on the nature 
of the tangle, this situation could rapidly cause the wing to spin. The