Boomerang GTO Owners' Manual
Contents
1. Boomerang GTO Owners Manual Thank you for taking the time to read this manual Thank you Thank you for choosing the Boomerang GTO We are confident that this paraglider will provide you with countless exciting flying experiences This manual contains all the information you need to fly and maintain your paraglider A thorough Knowledge of your equipment will keep you safe and enable you to maximize your full potential Please pass on this manual to the new owner if you do resell your glider Happy Flights and Safe Landings The GIN Team Safety Notice By the purchase of our equipment you are responsible for being a certified paraglide pilot and you accept all risks inherent with paragliding activities including injury and death Improper use or misuse of GIN equipment greatly increases these risks Neither Gin Gliders Inc nor the seller of GIN equipment Shall be held liable for personal or third party injuries or damages under any circumstances Please note The Boomerang GTO is an EN standard D and LTF D glider and it is suitable for use by highly experienced and qualified pilots who have flown at least 80 hours per year for more than 4 years The Boomerang GTO is not Suitable for inexperienced pilots beginners intermediates or for school training If any aspect of the use of our equipment remains unclear please contact your local paragliding instructor GIN reseller or the importer in your country 2 MGIN Cont2. correct or to brake too early when the glider is still behind you danger of a stall Cravat glider wrapped around lines A cravat occurs after a severe deflation when the wingtip becomes trapped in the glider lines It is extremely unlikely to occur on the Boomerang GTO but can happen after big deflations or in cascading situations Nevertheless the pilot should be familiar with the procedure for correcting it Counter brake and or weight shift and pump the brake on the tangled side On the Boomerang GTO there is a separate stabilizer winglet main line that goes down to the C riser This line usually becomes slack in the event of a cravat Pull it down completely until it becomes tight and the cravat normally comes out 12 MGIN Cascade of events Many reserve deployments are a result of a cascade of over corrections by the pilot Please note that over corrections are often worse than no Input at all Flat spin In normal thermal flight you are very far from the limits of a flat spin Nevertheless should this occur just let up the brakes immediately and wait for the glider to surge forward checking it with the brakes if it surges too far Never release the spin if the glider is far back behind you always try to release it when it is above or in front of you Full stall dynamic stall This is an extreme manoeuvre and there should never be any need to perform one Do not take wraps with your brakes before entering a full stall Kee
3. wall by partially inflating your glider on the ground thus sorting out the lines thoroughly Check the airspace Is clear and gently pull the glider up with the A risers When the glider is overhead check it gently with the brakes turn and launch In stronger winds be prepared to take a couple of steps towards the glider as it inflates and rises Line knots or tangles If you do take off with a line knot or tangle try to get clear of the ground and any traffic before taking corrective action Weight shift and or counter brake to the opposite side and pump the Knotted side with your brake Be careful not to fly too slowly to avoid a stall or spin If the knot or tangle is too tight to pump out immediately fly to the landing zone and land safely Min sink best glide The minimum sink speed is achieved by pulling approximately 20 cm of brake The theoretical best glide speed in calm air is realized at the hands off position Accelerated flight Once you have become accustomed to flying the Boomerang GTO you can practice using the speed system which allows improved glide in headwinds and greater penetration in strong winds When flying accelerated the glider is less stable and the risk of a collapse is higher Also the glider reacts more radically when a collapse happens during accelerated flight compared to flying at trim speed Apply the speed system by pushing the speed bar progressively with your feet Be prepared to control roll by using
4. of engineers and test pilots Gin s philosophy is simple to design gliders that he and any other pilot will love to fly This philosophy applies equally for a beginner glider such as the Bolero as for the world beating competition glider the Boomerang No glider is released to the market without Gin s complete satisfaction Gin has over 20 years experience of designing and manufacturing paragliders and is backed up by an equally experienced team both within the company in Korea and throughout a worldwide network of distributors and dealers The GIN Team dominated the Paragliding World Cup from 1998 to today and has had countless other competition successes in World Cups World and National Championships This high level of expertise provided by dedicated professionals ensures that you get the best possible product support and after sales service 4 GIN 2 Introducing the Boomerang GTO The Boomerang GTO is a high performance and competition wing built around a completely new concept and suitable for cross country or competition It is a wing which is uniquely in tune with the needs of today s pilots The Boomerang GTO offers outstanding security top performance and climbing ability combined with precise and dynamic handling This allows the pilot to thermal precisely and to climb extremely well The Boomerang GTO s high pitch stability allows for faster cross country flights The Boomerang GTO will allow you to experience the f
5. or light winds Pre flight check list Reserve parachute pin in and handle secure Helmet and harness buckles closed Lines free Canopy open and into wind Airspace clear Take off The key to a successful launch technique is to practice ground handling on flat ground whenever you can Light or Nil Wind Launch The Boomerang GTO inflates steadily in nil wind conditions Simply guide the glider with the A risers Keeping your arms bent and hands at the level of the shoulders Allow your arms to rise in an arc and wait for the glider to inflate and come above your head do not push the risers There is no need to pull the risers hard Run positively as the glider comes above your head Be sure to look up and check that the canopy is fully inflated before you take off and that there are no tangles in the lines If any irregularity should occur and you are not yet airborne abort the launch immediately by stalling the glider On steep launches stall one side of the glider and run parallel to the hill If the glider should come up sideways and the situation is recoverable run towards the lower side rather than trying to struggle against the force An impulse launch where you start running with slack lines close to the glider is not needed 10 MGIN Strong Wind Launch The reverse launch technique is recommended Holding the brakes turn around to face the wing passing one set of risers over your head as you turn We suggest building a
6. rapidly Asymmetric deflation In the event of encountering strong turbulence and suffering an asymmetric deflation collapse on one side the Boomerang GTO will promptly and easily re inflate without interference from the pilot but the wing will turn slightly towards the collapsed side This might be unwanted close to the ground or other gliders Maintain your course by weight shifting away from the collapsed side This action can be aided by applying a little force on the brake opposite to the deflation This will normally be sufficient for recovery However if the deflation fails to come out pump the deflated side with a firm and smooth pumping motion Let the glider regain its flying speed after it has re inflated If you have a big collapse especially when flying fully accelerated you must observe the following When a big collapse happens due to the difference in weight and inertia of the canopy and pilot the pilot will continue to travel forward and the canopy will move behind the pilot at first You must wait until you pendulum back below the canopy before reacting and carefully counter braking the open side of the canopy If you react too early or you counter brake too much you might risk stalling the collapsed canopy Symmetric deflation A symmetric frontal deflation will normally reopen promptly by itself without any pilot input The glider will regain airspeed with a small surge If counter braking be careful not to over
7. soft cloth to clean your wing Never use any abrasive materials or detergents Only clean the wing if it is absolutely necessary e g after a landing in salt water Maintenance Inspections GIN Gliders recommend that the Boomerang GTO is inspected by an authorized Gin agent after every 100 hours flying time or every year whichever is sooner To extend the validity of the EN LTF certification a full inspection is required every 200 hours or every 24 months This inspection should be made not only to the fabric but also the lines The maintenance instructions which can be downloaded from our homepage www gingliders com have to be observed A full inspection will give you peace of mind and extend your glider s lifetime Additional inspections should be performed by a qualified person following a crash or violent landing on the leading edge or if you note a deterioration of performance or behaviour You should also check for any damage to your lines sail risers and connectors before each flight Repairs Very small holes in the sail can be repaired with the sticky back tape provided with your glider Damaged lines should be replaced by your GIN dealer Before fitting a replacement line check it for length against its counterpart on the other side of the wing When a line has been replaced always inflate the glider on flat ground to check that everything is in order before flying Major repairs such as replacing panels should only be car
8. weightshift and pitch by varying the amount of bar Keep a very light pressure on the brakes in order to feel the canopy Avoid flying accelerated near the ground and be careful using the accelerator in turbulence If you do encounter a collapse while using the accelerator immediately step off the bar completely before taking any other corrective actions Active flying The Boomerang GTO has a high internal pressure resistance to tucking and a very high degree of passive safety However it is recommended that you always practise an active flying style This will help you avoid deflations in all but the most turbulent conditions The key to active piloting is keeping the glider above your head at all times If it falls back behind you let up the brakes If it surges in front of you counter brake until the surge is controlled If you sense a loss of pressure on one side of the canopy smoothly apply brake and or weight shift on the appropriate side until you feel pressure return In all cases maintain adequate airspeed and avoid overreaction 11 In turbulence Deflations of the canopy can occur in strong turbulence The Boomerang GTO will recover without pilot input in almost all situations so whenever in doubt let up the brakes and let the glider fly Only if the wing surges very fast in front of you should you stop it with the brakes However it is recommended that you follow the advice below in order to help the wing recover more
9. O is equipped with GIN s original Rigifoil system in the profiles this ensures high efficiency when flying accelerated and thus a higher average speed in cross country flights The total line length has been reduced which also helps to increase efficiency and performance The Boomerang GTO uses a mix of unsheathed and sheathed Aramid lines with 65 daN and 120 daN rated strength for the unsheathed top and mid lines and 180 220 daN strength for the sheathed bottom lines The Boomerang GTO is equipped with a highly efficient speed system which provides a higher top speed and an improved sink rate at all speeds These and other innovations make the Boomerang GTO the best glider available within the EN D and LTF D certification class i i il INA hi K M Manufacturing All GIN gliders are produced in the company s own facilities using the most modern techniques Highly skilled staff takes extreme care during the entire manufacturing process Stringent quality control is made after each step and all materials that go into each wing can be traced These measures guarantee that pilots fly with the assurance that their wing meets the most exacting safety standards GIN 3 Before you fly Pre delivery Inspection The Boomerang GTO is delivered with speed system rucksack Inner bag riser cover compression strap repair tape and this manual Your instructor or dealer should h
10. an active safety system and is much more effective 15 Tow launch The Boomerang GTO is suitable and certified for towing by pilots who have the relevant towing rating The Boomerang GTO has no tendencies towards deep stall parachuting There is sufficient margin to counter steer the glider in a normal towing situation Make sure you use proper equipment experienced personnel the recommended techniques and all relevant safety precautions for towing Motorized flight Paraglider certification does not include motorized flight However motorized flying with the Boomerang GTO is possible due to its very easy take off characteristics good performance stability and extraordinarily good handling Always use certified combinations of paramotor and glider To Know which glider paramotor combinations have been certified to be used in Germany check the German Ultralight Association DULV web site www dulv de and the website of the European Para Academy http para academy eu 16 MGIN 5 Care Maintenance and Repairs The materials used in the Boomerang GTO have been carefully selected for maximum durability Nevertheless following the guidelines below will keep your paraglider airworthy and will ensure a long period of continuous safe operation Excessive wear is caused by careless ground handling and packing unnecessary exposure to UV light chemicals heat and moisture Ground handling The following should be avoided Violent sho
11. arn 150D 3 225D 3 Designing paragliders is a personal journey of challenge and discovery an ongoing search for perfection Gin Seok Song Every effort has been made to ensure that the information in this manual is correct but please remember that it has been produced for guidance only It Should not be used as a how to fly manual This owner s manual is subject to changes without prior notice Please check www gingliders com for the latest information regarding the Boomerang GTO and other GIN products WARNING All gliders have to be inflated on a flat ground before the first flight The first flight has to be done by the Gin Gliders official dealer before delivery to the final pilot Paragliding is an extremely dangerous activity that can and sometimes does result in serious injury or death The designer manufacturer distributor wholesaler and retailer cannot and will not guarantee your safety when using this equipment or accept responsibility for any damage injury or death as a result of the use of this equipment This paragliding equipment should only be used by qualified and competent pilots or by pilots under the direct supervision of a competent and qualified paragliding instructor You alone must take full responsibility to ensure that you understand the correct and safe use of this paragliding equipment to use it only for the purpose for which it is designed and to practice all proper safety procedures befor
12. ave made a test inflation followed by a test flight before delivery Speed System The speed system increases the maximum speed by lowering the angle of attack with a pulley guided foot operated system About 15 km h gain in speed can be realized with the accelerator at full travel It is important to have your accelerator system correctly routed through your harness and attached to the risers with the supplied Brummel hooks The length of the speed bar should be initially adjusted while on the ground sitting in the harness so that the legs are fully extended at the point of full accelerator travel It is helpful to have an assistant hold the risers taut while making this adjustment Subsequent fine tuning can be done on the ground following the first flight with the speed system If in doubt about this procedure consult your Instructor or dealer o o Beo o a ee eo length at trim speed SS MAU length at full speed 7 Brake line adjustment The main brake line lengths of the Boomerang GTO are the same as on the sample that has been used for the EN LTF certification test flights These line lengths have been fine tuned by GIN test pilots and it should not be necessary to adjust them In soaring flight it is common to fly with half a wrap on the brakes and hold the handles on the Knot However care should be taken to release the wraps in any extreme situation If you do need to make adjustments to suit your harness body and flyin
13. ch side outwards and downwards as shown Although the noise of the wind around your ears may indicate the airspeed increases the airspeed does not increase by pulling big ears In fact it decreases by about 5 km h You may use the speed bar in combination with big ears to maintain enough forward speed while increasing the sink rate The glider can be steered while in big ears using weight shift alone When releasing the lines the Boomerang 610 5 ears will come out on their own Release the big ears at least 100m above the ground If this is not possible keep the big ears in until you flare for landing rather than letting them out on the approach This is a safer method because of a possible wind gradient close to the ground and your low airspeed high wing loading with big ears In Spiral dive The spiral dive should be considered an extreme manoeuvre Practice spiralling with caution and lower sink rates to get a feeling for the Boomerang GTO s behaviour Weight shift and pull the brake on one side gradually Let it accelerate for two turns and you will enter the spiral dive Once in the spiral your body position will move automatically to the opposite side of the turn You can control your descent rate and bank angle by applying more or less inner brake In fast Spirals it might be necessary to apply a bit of brake on the outside as well to prevent the outer wingtip from collapsing 14 MGIN WARNING A pilot who is dehydrated and or not acc
14. cks to the upper surface e g when the canopy crashes to the ground leading edge first whilst ground handling Dragging the glider along the ground Stepping on the lines or canopy The Kevlar line inside the sheath can take lots of pulling force without stretching but is sensitive to bending with small radius Opening your wing in strong winds without first untangling the lines UV damage Avoid leaving the glider out in the sun unnecessarily UV rays from the sun degrade paraglider cloth Packing instructions We advise you to pack the glider accordion wise as shown in the drawing This packing procedure takes slightly longer and is easier to do with an assistant but it conserves the rigidity in the profile reinforcements Since folding the glider weakens the materials pack the glider as loosely as possible Transport and Storage Moisture is the worst enemy for your glider adversely affecting the ageing of fabric lines and reinforcements The Boomerang GTO should therefore be kept dry and cool Do not pack the glider away for a prolonged period if it is damp sandy salty or if other objects have entered 17 the cells Always allow it to dry naturally before storage in a dry room Leave the rucksack zip open whenever possible to allow residual moisture to evaporate and do not transport or store the glider in the proximity of chemicals such as gasoline paints or other solvents Cleaning Use only lukewarm water and a
15. e and during use Paragliders require careful and constant care Over time age solar radiation dirt dust grease water wind stress and other variables will degrade the materials performance and safety of the glider thereby increasing the risk of injury or death Read and make sure you fully understand the owner s manual of this paraglider before you fly Always wear a helmet and protective clothing when flying a paraglider GIN 22
16. ents ee 4 2 Introducing the Boomerang GTO wissen 5 sceratnsaauaaeaaessietnwnnataaeamenier eer 5 UCU alee 0 6 0 6 Boek lop eee ee 7 ON EE EE E T 0 7 IS GOI US CIMCON A E EE E 8 0 E E E E TETS 8 OU INS ap E E E E E 9 Ball coal ac eee 9 Pre flight safety eee 9 4 lying tne Boomerang GTO ssnssssassetriessonsstvennrdersnnensdassenverseunstnsninsisainiansaenanneintieenneiien 10 8 10 Ciscoe E A E P ETA N E ee re 10 LEKNO aroraa ara ee E ENN 11 EEEE E 11 PCC Clee ORNI eee E E T E E 11 PU VG tI Ta e E EE T TEE A E E E 11 TATION sce ee 12 CSCO Ty SI Sr state tage E nasa oe 13 LOSI CRC WC 14 5 15 ee 15 TON UN Cessna dsp esses me eee 16 illus TZ TCI eee 16 5 Care Maintenance and 0 INtNNNiNNNRTTRTIN 17 os eee re inert heeds eietaae anes 17 WETE e AEE E E E E secoenmoatian eames 17 A ee A EE E 17 zoe cer 17 JEN aa 18 0 18 18 Maintenance 0 18 Environmentally friendly disposal of the s sscsscsscsscsscssessessessessessaseaseaseaseaseessessassasss 18 0 19 PES CNG eC CQ O eee ee 19 DAES orne A EEE E O E E T 19 HNE Pr iera ea ee 20 UEA o E E E E O E EE EEEE E 21 1 GIN Gliders GIN Gliders was formed in 1998 by paraglider designer and competition pilot Gin Seok Song and his team
17. g style we strongly recommend that you test fly the glider with every 2cm of adjustment There should be a minimum of 10cm of free brake travel when the glider is flown hands off This prevents the brakes being applied unintentionally when the speed system Is fully engaged We recommend a double sheepshank or a bowline knot for the brake handle attachment as shown in the diagram 44 Rucksack All Gin gliders are delivered with a durable ripstop KODURA rucksack with 160L capacity This rucksack is designed for ergonomic carrying comfort and ease of use The rucksack should be packed carefully to achieve maximum comfort First place the glider inside the harness and then put the top of harness in the bottom of the rucksack with the glider side next to the back of the rucksack Finally tighten the internal and external compression Straps and adjust the shoulder and waist straps to ensure the equipment stays firmly in place when walking There are also two storage pockets for accessories An XXL rucksack 2001 capacity is available as an optional extra for pilots that require it 6 8 Your harness The Boomerang GTO is certified for use with all harnesses with variable cross bracing GH type Practically all modern harnesses are GH type harnesses Older harnesses with fixed cross bracing GX type are not certified and should not be used Check with the manufacturer of the harness or your paragliding instructor if in doubt whe
18. p your hands close to your body during the stall and lock them under your harness seat plate if necessary In a stable full stall the canopy will oscillate back and forth Before releasing the stall raise your hands slightly and evenly to fill the glider with air If possible let the brakes up when the glider is in front of you to avoid excessive surge The Boomerang GTO will slow down the surge on its own but you may counter brake the dive briefly for comfort if needed and then let up the brakes to regain airspeed Be careful to not stall the glider again when damping the surge Never attempt a stall and then change your mind and release the brakes as the glider will surge radically Deep stall parachuting stable stall The Boomerang GTO does not have a tendency to go Into or stay in a deep stall Should this nevertheless occur put your hands on the A risers and push forward to gain speed On some modern harness accelerator setups you can reach the speed bar without using your hands If so push the speed bar Never try to steer out of a deep stall Don t touch the brakes when you are in a deep stall you will risk stalling the wing completely If you are very close to the ground you should never try to exit a stable deep stall The sink rate in a deep stall is normally below the sink rate of a rescue parachute therefore you should not risk collapsing or stalling the 13 glider near the ground when you are in a deep stall It is better
19. ried out by the distributor or manufacturer Maintenance Inspections for Certification As mentioned Boomerang GTO requires regular inspections Without these inspections the EN LTF certification will be invalid Please check with an authorized agency or a specialist about flight time and regular inspections Environmentally friendly disposal of the paraglider When this paraglider cannot be used any longer after an extended period of time you must ensure that it will be disposed in an environmentally friendly way Please observe the existing regulations and laws in your country and do not just put a glider that is not airworthy anymore into a domestic waste bin 18 MGIN 19 6 Reference Testing and Certification The GIN Boomerang GTO has passed EN standard D and LTF D The Boomerang GTO has also passed load and shock tests with a load exceeding 8G of the maximum weight in flight Technical Data ee GLIDER WEIGHT kg 5 6kg 6 0kg 6 3kg 6 6kg 1 0kg WEIGHT IN FLIGHT kg 2 80 95 90 105 95 115 108 130 Certification EN D LTF D V BK L MI Q N T BK B GIN Line Plan 20 21 Materials gt Fabric of Canopy Thread HT Polyester Y
20. t but becomes lighter the more you break the airfoil Once pulled do not release immediately The glider needs to settle into a stable B stall before releasing On exiting the B stall the Boomerang GTO has a good dive without deep stall tendencies We advise you to release the B stall symmetrically with both hands in a decisive manner Steering without brakes If a brake is not operational for some reason you can steer the Boomerang GTO with the C risers Add steering input by weight shifting in your harness Be careful not to steer too much with the riser to avoid any possibility of a spin Aerobatics The Boomerang GTO is not designed for aerobatics and in most countries acro flying is forbidden Besides the inherent risks extreme manoeuvres of any kind place unnecessary stress on the glider and effectively shorten its lifespan Landing with the Boomerang GTO Select a familiar landing area free of obstacles and carefully note the wind speed and direction in the landing area The low minimum flying speed of the Boomerang GTO will help you to make a soft landing in all conditions Approach the landing with sufficient airspeed and don t leave your last turn too late or too steep Before landing slide your legs forward in the harness so that you adopt the standing position NEVER land in the seated position it is very dangerous for your back even if you have back protection which is only a passive safety system Standing up before landing is
21. ther your harness is a GH or GX type harness The adjustment of the harness chest strap controls the distance between karabiners and affects the handling and stability of the glider Tightening the chest strap increases stability but also the risk of twisting after a collapse With the chest strap in a more closed position the glider also has more tendency to maintain a stable spiral lengthening of the chest strap gives more feedback from the glider but decreases stability Gin calculates and draws the plan of the glider with a distance between the carabiners of 44cm DHV certification test flights are also carried out with this setting We recommend setting a distance of 42cm to 50cm between the carabiners depending on the size and design of the harness There is no need to fly with a tight chest strap setting with the Boomerang GTO as there is no tendency for it to feel unstable unlike older gliders Certified Weight Range The Boomerang GTO must be flown within the certified weight range given in the reference section of this manual The weight range is quoted as the total weight in flight i e the weight of the pilot glider harness and accessories The easiest way to check your total weight is to stand on weighing scales with all your equipment packed into your rucksack Pre flight safety To fly this equipment you should Have appropriate practical and theoretical training and experience for this class of glider Have the necessary ins
22. to hang upright in your harness and prepare for a hard landing similar to a parachute landing and be ready for a PLF Don t try to flare before hitting the ground in deep stall You can recognise a deep stall by the glider getting mushy and the airflow around your ears decreasing This situation is usually achieved by flying in turbulence or exiting a deflation with too much brakes applied A wet glider also has a higher deep stall tendency If you pass through some rain accelerate a little and never induce big ears in this situation Stretched lines from hard towing or high fabric porosity can produce a higher deep stall tendency Losing altitude Extremely strong and widespread lift is found for example in storm conditions The best place to be in this situation is on the ground Nevertheless if you have been caught out by the weather and find yourself needing to descend rapidly there are several ways to do so The best way is of course to find sink Failing that try one of the techniques below Most of these techniques place undue stress on your glider and should be avoided if you want to extend its lifetime We recommend you initially practice these manoeuvres under qualified supervision during a safety training course Big ears Big ears is a safe method of moderately losing altitude while maintaining some forward speed Pull in big ears one at a time using the outer A line on each side Simply pull the outer A line on ea
23. ull pleasure of free flight with the best performance available today within the EN D class whilst still offering good stability For Pilots Who The Boomerang GTO is a perfect competition glider and high end cross country glider It is suitable for the very experienced pilot who flies frequently and wants the highest possible performance with LTF D safety The Boomerang GTO is designed for all kinds of flying from ridge soaring to thermalling but is optimized to go further in cross country or to win competitions Cutting edge Design Gin Gliders have made extensive improvements in the Boomerang GIO compared to its predecessors The Boomerang GIO has a high aspect ratio and is a completely new design concept Improvements have been made in line with GIN Gliders traditional values of higher stability and better performance Gin has made extensive improvements based on the unique planform of the Boomerang GTO Performance in glide and climbing ability as well as the top speed has been improved without sacrificing the level of security required by cross country and competition pilots A new profile and brake line layout enable fast and flat turning with proportionally increasing brake pressure for light and direct handling This helps the Boomerang GTO pilot climb efficiently and easily in thermals without the need to use a lot of brake The brake handles are attached with a swivel to avoid the brake line twisting in use The Boomerang GT
24. urance and licences Be in your right mind unaffected by extreme stress recreational or prescribed drugs Only fly in conditions suitable for your level of paragliding Wear suitable head protection use a certified harness and emergency parachute Make a thorough pre flight check 4 Flying the Boomerang GTO We recommend that you first practice inflating your glider on a small training hill or flat ground Make your first flights with your new paraglider in gentle conditions on a familiar flying site Preparation for launch Following a consistent method of preparation and pre flight checks is vital for safe flying We recommend the following On arrival at the flying site assess the suitability of the conditions wind speed and direction airspace turbulence and thermal cycles Inspect your glider harness reserve handle and pin helmet and any other equipment Choose a sufficiently large take off area with even ground and no obstacles Lay the glider out according to the plan form and get the lines and risers sorted out Put your helmet on Secure yourself in your harness and don t forget the leg loops Connect the risers to your harness carabiners ensuring there are no twists or loops around the lines Connect the speed system to the risers with the Brummel hooks Do a final line check by pulling gently on the risers or lines to ensure there are no new Knots tangles or interfering branches or rocks Take extra care in nil
25. ustomed to spiralling can lose consciousness in a steep spiral dive As with all types of aircraft we advise you to assist the glider to exit from the spiral dive in a controlled manner To allow the glider to exit from a Spiral dive your position in the harness must either be neutral or even better on the opposite site to the turn while spiralling If you release the inner brake the wing will normally exit the spiral dive by itself The Boomerang GTO has no tendency to stay in astable spiral but nevertheless you should Know how to exit from a stable spiral Weightshift actively to the outside of the turn and pull the outer brake until you feel the deceleration of the wing and your body moving towards a more upright position Then release the outer brake and let the glider decelerate for one or two more turns Apply a short brake action on the Inside brake just before the glider exits the spiral dive completely This will burn off the remaining energy and avoid a big pendulum moment after exiting the spiral We advise you to control the sink rate of the spiral to a maximum of 14 m per second It Is possible to reach a much higher sink rate but the risk of blackout or stable spiral increase proportionally with higher sink B stall To quickly lose altitude without straining your body with G force you can use the B stall Reach up to the B risers just on the maillons and twist your hands while gently pulling Considerable effort is required at firs
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