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Swing Arcus 7.26
Sicherheitsklasse 4
Swing Arcus 7.26

Instability rating
Safety class 1 Safety class 2 Safety class 3 Safety class 4 Safety class 5
asymmetric collapse
course change
forward pitching
height loss
sink velocity
G-Force
Frontal collapse
course change
height loss
sink velocity
Spiral dives
G-Force
Sink velocity after 720°
Maximum sink velocity
Behaviour on brake release
course change after spiral dive exit
Height loss during recovery
Safety class 4
Pilot skill requirements:
Pilots should be able to recognise the onset of instability and be able to prevent or minimise glider reactions through immediate and precise pilot inputs.
Advanced piloting skills and regular flight practice necessary.

Glider characteristics
Launch preparations: average
launch characteristics: balanced, delayed climb, needs gentle guidance, good feedback during inflation, no braking required, slows before zenith, control check simple, low takeoff speed
asymmetric collapse: moderate dynamics, total course change 90-180°, (1), moderate course change rate, moderate forward pitching 45-60°, (2), moderate height loss 30-39 m, (2), moderate sink velocity 15-19 m/s, (2), G-Force < 2,5 G, (1)
Frontal collapse: marked pitch backwards 45-60°, moderate pitch forwards 30-45°, moderate dynamics, no course change, (1), immediate automatic recovery, symmetric recovery, delayed return to normal airspeed, delayed reinflation of wingtips, moderate height loss 30-39 m, (2), low sink velocity 10-14 m/s, (1)
Spiral dives: rapid sink velocity increase, Moderate G-Force 3,5- 4.0 G, (2), Sink velocity after 720° <18 m/s, (3), Very high maximum sink velocity <25 m/s, (4), sink velocity increase < 6 m/s on brake release, (2), Course change 540-720° after spiral exit, (4), moderate height loss during recovery 30-60 m, (2)
B-Stall: normal force required, moderate pitch backwards 15-30°, moderate pitch forwards 15-30°, stable sink phase, no tendency to deform, immediate return to normal airspeed, 6-8 m/s, height loss on recovery < 20 m
big ears: simple initiation, stable flight phase, delayed automatic recovery, Vsink unaccelerated 2,5-3 m/s, Vsink accelerated 3,5-4 m/s, Vunaccelerated 3-5 km/h less than trimspeed, Vaccelerated 5-8 km/h faster than trimspeed

Notes
Launch Characteristic:
Independences Pioneer is a little more dynamic, this canopy climbs faster and requires more brake appliance to stabilise. Low end B gliders from Swing and Air Design behave very similarly. During inflation these gliders need to be guided a little, but do not hang behind orovershoot at all.

Asymmetric Collapse:
Relatively moderate reactions, moderate dynamics, height loss < 40m

Front Collapse:
Swings Arcus 7 stands out from the others that its height loss on large collapses
does not differ significantly from smaller ones. The reason for this: on smaller collapses the canopy ears tend to stay closed which delays recovery to normal flight. On larger collapses recovery is usually immediate.

Spiral Dive:
The spiral test provided no great surprises. All gliders behaved in accordance with
their LTF classifications. Swings Arcus 7 tends to remain longer in the spiral when recovering from fast spirals before going nose up and self-exiting. Due to this the height loss was the greatest under
the tested gliders.

B-Stall:
The low end LTF-B Swing Arcus 7 displayed good behaviour in B-stalls. No deformation tendencies, stable sink phase with good sink rates and no recovery or deep stall problems on exiting.

Big Ears:
Performing big ears on all of the tested gliders was unproblematic. Icaros Cyber TE
tends to flap its ears and snake a little in straight flight at full speed. This behaviour is note noted at trim speed.

Rating

Safety class 4

This class of paraglider reacts demandingly to one or more of the following manoeuvres: frontal collapse, asymmetric collapse or spiral dive.
Demandingly means that the above manoeuvres result in marked dynamic reactions from the glider and/or large height losses.

Advanced piloting skills which need to be regularly practised, together with good personal reaction times are required to safely fly this class of gliders. Basic recovery techniques for ending a manoeuvre are not sufficient to maintain control, reduce height loss to a minimum and prevent subsequent critical reactions. Pilots should be able to recognise the onset of the above manoeuvres and be able to prevent or minimise their effects through immediate and precise pilot inputs.

Additional experience such as regular ground handling and SIV training is required to safely fly gliders of this class. Special training or pilot skills which exceed standard training may be required for the safe performance of emergency descent techniques. Gliders of this Safety Class are not suitable for beginners, irregular flyers or low-airtime pilots.