Dudek Snake XX User Manual
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Dudek Snake XX User Manual

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Summary of Contents for Dudek Snake XX

  • Page 2 (in the order of safety) the outer lines of the 2D steering system. Any steering inputs should be smooth and easy, without sharp and/or deep movements. Such actions can dynamically change pressure distribution over the airfoil, leading to collapses. These warnings affect every paraglider and the Snake XX is no exception!
  • Page 3 Page TABLE OF CONTENTS 1. Introduction..................4 2. The wing....................5 2.1 Design 2.2 Structure 3. Flight operation................10 3.1 Steering system 3.2 Before you fly 3.3 Take off 3.4 Level flight 3.5 Landing 3.6 Golden rules Free flying 3.7.1 Take-off 3.7.2 Flight 3.7.3 Landing 3.7.4...

  • Page 4: Introduction......................................................................................4

    DISCLAIMER Please read this manual carefully and note following points: The purpose of this Manual is to offer guidelines to the Snake XX pilot ■ and it is by no means intended to be used as a training manual for this or any other paraglider.

  • Page 5: Design

    In addition the faster and safer your paraglider is, the more often you can fly. While the Snake XX was designed to...

  • Page 6: Structure

    STRUCTURE The body of the Snake XX was designed in our CSG (Canopy Shape Guard) system, comprising many elements resulting in exceptional coherence and stability of the shape. Below you will find a short description of CSG subsystems.
  • Page 7 Careful selection of modern fabrics and design solutions brings about great strength and durability of the Snake XX. All materials come from marked production batches, and each production step can be verified down to identification of specific worker and controller.
  • Page 8 SR-Scrim fabric. Rigging system All of the Snake XX suspension lines are sheathed by a coloured polyester layer which is covering a brownish Technora core. Lines directly under the canopy are left as bare cores.
  • Page 9 Brake handles are attached to the steering lines at optimal point, guaranteeing safe and effective operation. On adjusting the steering lines see chapter 3. Our sports steering handle for Snake XX, besides its attractive, light design, features: a swivel – preventing possible twisting of the steering ■...

  • Page 10: Steering System

    FLIGHT OPERATION 3.1 STEERING SYSTEM Steering system consist of following parts: 1. 2D - multifunctional brake system (regular steering handles) – more details on page 22; 2. TCL (Tip Control Line); 3. TST (Tip Steering Toggle) - additional mini toggles connected to TCL line, for stabilo steering;...
  • Page 11 Risers in lower hangpoint configuration (pulley in the middle) inner 2D line TCL line outer 2D line TEA lock pulley position (1) speed system swivel pulleys pulley position (2) speed system Easy Keeper hooks magnets speed system steering handle stop TST handle pulley position (3) trimmer buckle...
  • Page 12 Easy Keeper Easy Keeper is our indigenous way to hold the brake handles at the risers by strong neodymium magnets. It keeps the handles firmly at the risers, while both attaching and releasing goes smoothly and easily. The system allows for easy placing the brake handles on risers when they are not used in flight, thus minimalizing danger of getting them into running propeller.
  • Page 13 With all these changes it is possible to adjust placement of the Easy Keeper magnets too. With highest position of the pulley, the magnet is at its highest too, and with lower pulley positions the magnet is mounted lower position as shown on the picture.

  • Page 14: Before You Fly

    In order to get familiar with your wing we recommend flying with closed trimmers first (or slightly opened, up to 3 cm), because in this configuration Snake XX behaves more like a classic wing. For the starters it’s strongly recommended to inactivate the Power Attack system. In order to do that you have to unhook PA and the trimmers.

  • Page 15: Take Off

    Paraglider preparation Lay out the paraglider downwind of the power unit, with all suspension lines taut and pointing toward center of the power unit. The risers are to be laid on the ground. Set the trimmers as completely closed (0) or slightly opened up to 3 cm, depending on your preferences and weight (the scale is marked every 3 cm).
  • Page 16 Holding the risers, brakes and throttle as described above, pull the front risers and inflate the canopy. Snake XX comes up easily and sometimes it may require a dab on the brakes to keep it over your head.
  • Page 17 Even as Snake XX in a steep climb does not stay behind as much as conventional paragliders do, the low speed always can lead to a stall. Besides, at any time you have to be prepared for engine malfunction, so it's better not to take unnecessary chances and always fly with a safe margin of speed.

  • Page 18: Level Flight

    If the conditions are turbulent, it can look foolhardy, but this is the essential feature of the reflex profile - the faster you fly, the safer your Snake XX is. That's why it's really possible to release the brakes and enjoy your flight.
  • Page 19 Trimmers and speed-system operation The reflex wing airfoil enables the Snake XX pilot to use a wide range of trimmers and speed-system action. You are free to experiment with all possible settings, as long as you keep safe altitude.
  • Page 20 TCL (Tip Control Line). Flight - trimmers off and speed-system engaged (full speed mode): Due to relatively high aspect ratio of the Snake XX and consequent short aerodynamic chord of the wingtips, steering the paraglider with main brake handles at full speed configuration becomes impossible –...
  • Page 21 Various steering modes with PA activated and deactivated Steering with main brake toggles only (slow or accelerated mode) The toggle has different effects when pulled down vs. away (details on next page). Main toggle + outer line (accelerated mode) Variable steering progression depending on degree of operation. Steering with outer line only (accelerated mode) Main steering toggles can be docked on the magnets or let free.
  • Page 22 2D steering system – examples of operation Below you can find basic modes of steering with 2D system. Demonstrated examples are by far not a complete catalogue – there is a lot of interim configurations and only the pilot will choose what kind of steering is the best in given situation. 2D steering is considerably different than the classic steering system.
  • Page 23 be keeping the brakes down for long). However, this phenomenon is undesirable, unpleasant and - most of all - not effective as a means of directional corrections. It follows that steering at full speed should be done only with the TST handle or TCL line.
  • Page 24 If the setting is not symmetrical, the paraglider will turn in flight. And if you ■ inadvertently release the trimmers, reflex profile of the Snake XX will keep your wing level, so after hitting the gas you will descend with increased...
  • Page 25 Trimmers and speed-system influence on the aerofoil Slow mode Accelerated mode Full speed mode Trimmers fully opened Trimmers fully closed (0) Trimmers fully opened Speed system engaged Speed-system inactive Speed-system inactive (alternatively speed-system Maximum speed Slowest speed, engaged with closed trims) Minimum sink.

  • Page 26: Golden Rules

    In contrast, a full-speed landing with flare is recommended. Snake XX is very efficient at converting airspeed for lift, so you can glide a long way slowing down with gradual increase on the brakes. Finally the level flight is stopped and soft touch-down ensues.

  • Page 27: Free Flying

    In case of forward launch we recommend that after spreading the canopy all lines be taut. Snake XX is launched A risers only. The optimal setting of the trimmers is completely closed (slow), in case of strong wind they can be released a bit.
  • Page 28 Full application of the speed system increases flight speed by some 30%. In contrast to most paragliders it does not decrease wing stability, in fact the Snake XX seems to counter the turbulences even better. Still, if you meet some serious trouble, it is advisable to release the speedbar. With application of the speed system the brake forces grow, while brake effectiveness decreases considerably.

  • Page 29: Winching

    D risers. 3.7.4 Winching Snake XX was not designed for winching. The reflex aerofoil used in this paraglider has inherent tendency to increase the angle of attack. While in normal flight such a disposition makes it safer, it can be dangerous during winch start.

  • Page 30: Spiral Dive

    On quick and symmetrical releasing B-lines the airflow will be reinstated and the wing will surge forward, returning to normal flight. In contrast to standard paragliders, in case of Snake XX there is no need to counter this surge with brakes - yet another asset of the reflex profile! CAUTION: See the PARACHUTAL STALL chapter.

  • Page 31: Extreme Situations

    EXTREME SITUATIONS CAUTION: Due to high resistance of the Snake XX against both side and front collapses, we strongly recommend not to provoke such situations during safety trainings. Inducing collapses can be very hard to impossible in standard way, while unconventional attempts can result in extremely violent and dynamic behaviour.

  • Page 32: Deep Stall

    You can release the trims too. 3.9.5 Line over (cravatte) Snake XX is a modern wing which, in order to decrease drag, has fewer suspension lines and greater distances in between. Therefore it's always possible that after a tuck one of the stabilisers may tangle in the lines. Usually a couple of pulls with a brake settles the matter.

  • Page 33: Storage

    Even when packed in a bag, it should not remain in the sun for long. Snake XX's suspension lines consist of Technora inner core and polyester sheath. Submitting them to excessive loads in flight should be avoided, as it can cause irreversible damage.
  • Page 34 Every second year Snake XX should undergo technical inspection by the manufacturer or authorised distributor. Strength of the unsheathed lines should be controlled after every 100 flight hours, after 200 hrs or...
  • Page 35 5. TECHNICAL DATA Snake XX Certification DGAC DGAC DGAC DGAC DGAC DGAC Number of cells Surface area (flat) [m 15,00 16,00 18,00 20,00 22,00 28,00 Surface area (projected) [m 12,94 13,81 15,53 17,26 18,98 24,16 Span (flat) [m] 9,40 9,71...
  • Page 36 AeroCasco insurance against damage and repair costs. WARRANTY Dudek Paragliders guarantees free of charge repairs caused by the material or production faults along following scheme: For the free-flying paragliders warranty covers 36 months (3 years) or 300 flight hours (whichever comes first).
  • Page 37 Normal warranty does not cover repairs of damages caused by the user or a third party. Since costs of such repairs can be considerable, Dudek Paragliders offers an AeroCasco insurance. It covers a one-off repair of any mechanical damages, no matter how big and whoever inflicted them.
  • Page 38 7. WHAT HAVE YOU BOUGHT The Dudek paraglider you've purchased should have the following items: the paraglider itself (canopy, lines and risers), ■ transport bag (with compression strap), ■ MotoBag backpack with quickpack, ■ speed system with Easy Catch bar, ■...
  • Page 39 8. RIGGING SCHEME Rigging (suspension lines) scheme is on the next page, while tables of lines' lengths are published on our website www.dudek.eu Lengths are measured with a specialised, computer-operated device. All lines are stretched with a 5 kg load before cutting. Thanks to abovementioned device and proper procedures, final tolerance of line lengths does not exceed +/- 10mm.
  • Page 41 MADE IN EUROPE Dudek Paragliders ul. Centralna 2U 86-031 Osielsko, Poland tel. (+48) 52 324 17 40 export@dudek.eu...

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