Equipment Portal
Gradient Bright 5 26 |
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Instability rating |
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Glider characteristics |
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Launch preparations: easy
launch characteristics: balanced, climbs constantly, no guidance necessary, minimal feedback during inflation, little braking required, slows before zenith, control check simple, low takeoff speed
asymmetric collapse: canopy colllapses at high angle to leading edge, 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: canopy collapses with high total collapse aera, moderate pitch backwards 30-45°, moderate pitch forwards 30-45°, moderate dynamics, course change <90°, (2), variable recovery behaviour, at times immediate, at times delayed, automatic recovery, (3), usually symmetric recovery, immediate return to normal airspeed, high height loss 40-49 m, (3), low sink velocity 10-14 m/s, (1)
Spiral dives: moderate sink velocity increase, Moderate G-Force 3,5- 4.0 G, (2), Sink velocity after 720° <18 m/s, (3), High maximum sink velocity < 22 m/s, (3), sink velocity increase < 6 m/s on brake release, (2), Course change 360-540° after spiral exit, (3), high height loss during recovery 60-100 m, (3)
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, 8-10 m/s, height loss on recovery < 20 m
big ears: simple initiation, stable flight phase, immediate 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 3-5 km/h faster than trimspeed
Steering behaviour: balanced to agile, 70 cm brake travel range, Noticable brake pressure increase, normal stall point, easily identifiable |
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Launch preparations: Gradient's Bright 5 have uncomplicated riser sets with no associated difficulties, line sorting was simple, especially due to the clear colour sorting – well suited to beginners. Launch characteristic: Gradient's Bright 5 is also simple to start, but somewhat different to handle. The canopy inflates with a gentle start impulse and doesn't provide the pilot with much feedback as it climbs. The climb is homogeneous and without any break-out tendencies and slows automatically just before the zenith. No large brake inputs are required to stabilise it there. Care should be taken during the control check phase – too much brake will cause the canopy to fall quickly back behind the pilot. Asymmetric Collapse: Gradient's Bright 5had the most benign reactions. The Czech glider reacts generally a little more dynamically, especially on pitch forward dives when recovering from extreme collapses. If this occurs, then a collapse on the opposite wingtip may follow, but without any great course change. Height loss during this manoeuvre was normal for the A-class, and between 30-40 meters. Front collapse: Generally fast recovery with only slight delay and collapsed wingtips, but on rare occasions also with longer delayed recovery and possible rotation. Spiral Dive: Sink velocities around 15 m/s after the second turn, with exiting after a short acceleration phase and course changes of 180-270°. Exit behavior is somewhat challenging for the LTF-A class. B-Stall: Stable sink phase, low pitching back and forward. Immediate recovery. Big Ears: Very easy, wingtips stable, no flapping. |
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Rating |
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Safety class 3 This class of paraglider react moderately to one or more of the following manoeuvres: frontal collapse, asymmetric collapse or spiral dive.Moderately means that the above manoeuvres result in dynamic reactions from the glider and/or large height losses. Good piloting skills which need to be regularly practised, together with good personal reaction times which are above basic training levels are required to safely fly this class of gliders. Skill and experience levels greater than those attained in basic training are required to safely recover from the above manoeuvres. Emergency descent manoeuvres, in particular spiral dives may require advanced recovery skills. Additional training such as regular ground handling or SIV training is recommended. |
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