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4.3 USING THE ACCELERATOR

The HOOK 4 P profile was designed for stable flight throughout its entire 
speed range. It is useful to accelerate when flying in strong winds or in 
extreme sink. When accelerating the wing, the profile becomes more 
sensitive to turbulence and closer to a possible frontal collapse. If a loss 
in internal wing pressure is felt, tension on the accelerator should be 
reduced to a minimum and a slight pull on the brake lines is recommended 
to increase the wing’s incidence angle. Remember to re-establish the air 
speed after correcting the incidence.

It is NOT recommended to accelerate near obstacles or in very turbulent 
conditions. If necessary, constantly adjust the movements and pressure 
on the speed-bar whilst doing the same to the brake lines. This balance is 
considered to be ‘active piloting’.

The HOOK 4 P risers have been designed without any adjustable, 
removable or variable device to prevent and incorrect use of the speed 
system.

4.4 FLYING WITHOUT BRAKE LINES

If, for any reason at all, the HOOK 4 P’s brake lines become disabled in 
flight, piloting the wing with the ‘C’ risers and weight shifting will become 
necessary. The C-lines can be used to steer the glider easily because 
they are not under much tension, however you will need to be careful and 
not handle them too heavily to cause a stall or negative turn. The wing 
must be flown at full speed during the landing approach, and the C-risers 
will have to be pulled symmetrically all the way down shortly before 
contact with the ground. This braking method is not as effective as using 
the brake lines, and hence the wing will land with a higher ground speed.

4.5 LINE KNOT(S) IN FLIGHT

The best way to avoid knots and tangles is to thoroughly inspect the lines 

as part of a systematic pre-flight check. If a knot is spotted during the 
running phase, immediately abort the launching sequence and stop.

If inadvertently taking off with a knotted line, the glider drift will need to 
be compensated by weight-shifting to the opposite side of the wing and 
applying a slight brake pull to that side. Gently pull the brake line to see 
if the knot can be undone or try to locate the problem line. Try pulling it 
to see if the knot can be undone. Beware of trying to clear a knotted line 
or untangle a line in flight. Do not pull too hard on the brake handles for 
there will be an increased risk of stalling the wing or enter a negative turn.

Before trying to remove a knot, make sure there are no pilots flying 
nearby, and never try these attempts close to obstacles. If the knot is 
too tight and cannot be undone, carefully and safely fly to the nearest 
landing zone.

5. LOSING ALTITUDE

Knowledge of different descent techniques could become vital in certain 
situations. The most adequate descent method will depend on the 
particular situation. 

It is well advised to learn the particularities of these manoeuvres under 
the supervision of a knowledgeable certified instructor.
5.1 EARS

Big ears is a moderate descent technique, able to increase the sink rate 
to –3 or –4 m/s, and reduce the ground speed down to 3 to 5 km/h. 
Effective piloting then becomes limited. The angle of attack and load will 
also increase due to the smaller surface area of the wing. Pushing on the 
accelerator/speed-bar will partially restore the wing’s horizontal speed 
and angle of attack.

To activate the ‘Big ears’ manoeuvre take the 2A3 line on each A’-riser 
and simultaneously, smoothly pull them outward and downward. The 

Summary of Contents for HOOK 4 P Series

Page 1: ...USER MANUAL HOOK 4 P...

Page 2: ...nature who want to decide when how and where they want to progress You are free to choose your starting point and progression route We are confident that you will enjoy flying this wing and will soon...

Page 3: ...LANDING 10 3 7 FOLDING INSTRUCTIONS 10 4 IN FLIGHT 10 4 1 FLYING IN TURBULENCE 10 4 2 POSSIBLE CONFIGURATIONS 10 4 3 USING THE ACCELERATOR 12 4 4 FLYING WITHOUT BRAKE LINES 12 4 5 LINE KNOT S IN FLIG...

Page 4: ...t time you pilot a Niviuk glider just enjoy it 1 4 ASSEMBLY MATERIALS The HOOK 4 P has all the technological innovations used on other Niviuk gliders Furthermore it is full of small details like the S...

Page 5: ...g this IKS model has a load bearing braking point of 1055 kg compared to the 800 kg of the classic maillon Please note the IKS1000 kg system was not designed nor certified to connect the risers to the...

Page 6: ...fabric manufacturer Niviuk gliders are made of premium materials Information about the various materials used to manufacture the wing can be reviewed on the final pages of this manual 1 5 ELEMENTS CO...

Page 7: ...bar is pushed using the feet the wing accelerates The speed can be regulated by varying the pressure on the bar Once the pressure on the bar is released the speed system returns to the neutral setting...

Page 8: ...the knots are located tightly in the riser connections The system or procedure for connecting the kite knot is exactly the same as the Brummel hooks and can be used in other systems or connection ele...

Page 9: ...training hill or obstacle free area We recommend that a qualified instructor is present and supervising the entire procedure 3 2 PREPARATION Repeat the procedures detailed in chapter 2 UNPACKING AND...

Page 10: ...s affecting the harness stability To prevent the collapse from happening pull the toggle corresponding to the affected side of the wing It will increase the incidence of the wing angle of attack If th...

Page 11: ...s default overhead flying location 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...

Page 12: ...ground speed 4 5 LINE KNOT S IN FLIGHT The best way to avoid knots and tangles is to thoroughly inspect the lines as part of a systematic pre flight check If a knot is spotted during the running phas...

Page 13: ...o a normal flight configuration 5 3 SPIRAL DIVE This is a more effective way to rapidly lose altitude Beware that the wing will experience and be subjected to a tremendous amount of descending and rot...

Page 14: ...no need for compression during the procedure doing so may damage the fabric including the risers and lines 8 CARE AND MAINTENANCE 8 1 MAINTENANCE Careful maintenance of your equipment will ensure con...

Page 15: ...must not use this equipment if you have not been properly trained to use it Do not take advice or accept any informal training from anyone who is not properly qualified as a flight instructor or qual...

Page 16: ...IO 4 4 4 4 FLATTENING 15 15 15 15 CORD MAXIMUM m 2 47 2 58 2 69 2 8 MINIMUM m 0 49 0 52 0 54 0 56 AVERAGE m 1 97 2 06 2 14 2 23 LINES TOTAL METERS m 208 218 227 236 HEIGHT m 6 5 6 8 7 09 7 36 NUMBER 1...

Page 17: ...MANY RIB REINFORCEMENT LTN 0 8 STICK SPORTWARE CO CHINA THREAD SERAFIL 60 AMAN GERMANY SUSPENSION LINES FABRIC CODE SUPPLIER UPPER CASCADES DC 040 LIROS GMHB GERMANY UPPER CASCADES DC 060 LIROS GMHB G...

Page 18: ...18 11 3 RISERS LAYOUT...

Page 19: ...19 11 4 LINE PLAN...

Page 20: ...8 5726 5800 11 5286 5273 5372 12 5184 5188 5246 RISERS LENGTH m m A B B C 470 470 470 470 STANDARD 340 360 380 470 ACCELERATED LINES HEIGHT m m A B C D br 1 6305 6204 6307 6416 7131 2 6241 6142 6218 6...

Page 21: ...5 6316 6386 11 5824 5810 5918 12 5711 5717 5779 RISERS LENGTH m m A B B C 470 470 470 470 STANDARD 340 360 380 470 ACCELERATED LINES HEIGHT m m A B C D br 1 6873 6770 6886 6999 7699 2 6806 6703 6790 6...

Page 22: ...signature GB REV 01 07 06 2016 ISO 71 9 10 Page 1 of 1 In accordance with standards EN 926 2 2013 EN 926 1 2015 LTF 91 09 Class B PG_1097 2016 Date of issue DMY 16 05 2017 Manufacturer Niviuk Gliders...

Page 23: ...ature GB REV 01 07 06 2016 ISO 71 9 10 Page 1 of 1 In accordance with standards EN 926 2 2013 EN 926 1 2015 LTF 91 09 Class B PG_1099 2016 Date of issue DMY 16 05 2017 Manufacturer Niviuk Gliders Air...

Page 24: ...The importance of small details niviuk com...

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