Aeros Still TL Application guide

TRIKE WING
Still TL
OWNER / SERVICE MANUAL
Manufactured by:
AEROS Ltd. Tel: [phone]
Post-Volynskaya St. 5 Fax: [phone]
Kiev 03061 E-mail: [e-mail]
Ukraine http:// www.aeros.com.ua
December 2017

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Table of Contents
1. Introduction……………………………………………………………………………………3
2. Technical Information and Operating Limitations.........................................................4
3. Still TL Reassembly After Shipping procedure..………………………….......................4
4. Still TL Breakdown For Shipping Procedure………..........………………......................7
5. Still TL Set-Up Procedure.............................................................................................7
6. Preflight Procedure..………………………………………………………………………..11
7. Speed to Fly..………………………………………………………………………………..13
8. Still TL Breakdown .....................................................................................................14
9. Wing Tuning……………………………...………………………………………………....16
10. Maintenance..……..…………………………………………………….…………………17
11. Removing the Sail from the Airframe and Re-Installing…………...………………….19
12. Storage……………………………………………………………………………………..22
13. Transportation……………………………………………………………………………..22
14. In Closing - A Few Words on Your Safety................................................................23
Schematics

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1. INTRODUCTION
Thank you for purchasing Aeros wing for your trike.
Still TL is a kingpostless two-seater trike wing with 30 % double surface, designed for the wide
range of pilots: from beginners through to the most experienced pilots who want to have fun in
powered flying. A small percentage double surface with a minimum amount of battens for
maintaining the airfoil has resulted in relatively low weight and fast set up time.
No kingpost means that you can store the wing in a hangar while it remains fixed to the trike.
This allows storing the trike with the wing on it in a really limited space in a hangar or even in a
garage. Setting the wing that already attached to the trike up for flight is fast and easy.
The structural strength of the Still TL is sufficient for different flight conditions with defined wing
load.
Please read and be sure you thoroughly understand this manual before flying the Still TL. Be
sure that you thoroughly familiar with the wing and the contents of this manual before initial
operation. If you have access to the Internet, please visit us regularly at
http://www.aeros.com.ua
In case of any doubts or questions contact your local dealers or Aeros directly.
We wish you safe and enjoyable flying career.
Aeros Ltd.
Definitions
Definitions used in this Manual such as WARNING, CAUTION and NOTE are employed in the
following context:
WARNING
OPERATING PROCEDURES, TECHNIQUES, ETC. WHICH IF NOT FOLLOWED CORRECTLY, MAY
RESULT IN PERSONAL INJURY OR DEATH.
CAUTION
OPERATING PROCEDURES, TECHNIQUES, ETC. WHICH IF NOT STRICTLY OBSERVED, MAY
RESULT IN DAMAGE TO THE AIRCRAFT OR ITS INSTALLED EQUIPMENT.
NOTE
Operating procedures, techniques, etc. which considered essential to highlight.

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2. TECHNICAL INFORMATION AND OPERATING LIMITATIONS
Flight operation of the Still TL should be limited to non-aerobatic maneuvers; those in which the
pitch angle will not exceed 30 degrees nose up or nose down from the horizon and bank angle
will not exceed 60 degrees.
Wing area, sq.m. (sq.ft.) 17.4 (187)
Wing span, m (ft.) 10.00 (32)
Aspect ratio 5.8
Nose angle, °
°°
°122
Weight (without bags), kg (lb) 57.5 (127)
Number of sail battens 15
Double sail, % 30
Range of operating overloads +4/-2
Ultimate tested strength, G +6/-3
Wind speed max, m/sec (mph) 10 (22)
Min. airspeed, km/h (mph) 50 (31)
Cruise speed, km/h (mph) 75-85 (47-53)
Max. airspeed, km/h (mph) 105 (65)
Max. take-off weight, kg (lb) 472.5 (1041.7)
Aeros recommends that no attempt should ever be made to deliberately spin a trike with this
wing or any wing.
The stability, controllability, and structural strength of a properly maintained Still TL have been
determined to be adequate for safe operation when the wing is operated within the entire
manufacturer specified limitations.
No warranty of adequate stability, controllability, or structural strength is made or implied for
operation outside of these limitations.
Operating the Still TL outside of the above limitations may result in injury and death.
Flying a trike with the Still TL wing in strong or gusty winds or turbulence may result in loss of
control of the wing, which may lead to injury and death.
Do not fly in such conditions unless you realize and wish to personally accept the associated
risks.
3. STILL TL REASSEMBLY AFTER SHIPPING PROCEDURE
1. With the wing in the bag (4 meters long) lay the glider on the ground.
2. Undo the wing bag zipper. Untie the Velcro straps. Remove the battens, the base tube and
the leading edge tubes N3 from the bag.
3. Turn the wing so that the downtubes, packed into the safety bags, are on the bottom.

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4. Unfold the sail along the leading edge (Fig. 1).
a b Figure 1
5. There is a self-tapping screw for the turn adjustment at the outer part of the leading edge # 3.
Position of the self-tapping screw has been determined and marked after the test flights. Take
the screw out before installing the leading edge tube # 3 (Fig. 2).
Figure 2
Attach the leading edge tubes N3 to the leading edge tubes N2 according to the marking (L-left,
R-right, marks should be on top) (Fig. 3).
a b
Figure 3

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6. While installing the leading edge tubes into the sail, place the washout struts facing forward
towards the nose of the wing and along the leading edge tubes (Fig. 4).
Put washout tips outside of the sail through the washout strut holes. Make sure that the leading
edge tube #3 is properly installed.
Figure 4
7. Tighten the sail along the leading edge, mount it to the rear leading edge and attach the
securing Velcro (Fig. 5).
The sail is mounted to the leading edge by the inner (forward) of the two loops of webbing. The
outer loop is a pull handle only.
a b Figure 5
8. Fix the sail with the self-tapping screw. Make sure you installing the screw in the same
marked hole it has been removed from (Fig. 6).
Figure 6
9. Install the keel batten (Fig. 7) and # 1 battens (Fig. 8) in the wing if they are not installed.

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Aeros convention is that red marked battens go in the left wing and green marked battens in the
right. Battens are numbered from the center outwards, and the longest batten in a Still TL is
designated as the "# 1" batten.
Figure 7 Figure 8
10. The further set up procedure is similar to the one from a 6-meter long package.
4. STILL TL BREAKDOWN FOR SHIPPING PROCEDURE
This process will basically be the reverse of reassembling after breakdown for shipping. Before
beginning, read through the section above on how to re-install the rear leading edges.
5. STILL TL SET-UP PROCEDURE
1. Lay the wing on the ground, with the bag zipper up and the nose of the wing pointing
downwind.
2. Undo zipper and take out battens, struts and the control bar (Fig. 9).
Figure 9
3. Untie the two middle Velcro straps. Turn the wing on one side and spread the down tubes.
Install the control bar according to the markings. Fix control bar using bolts, nuts and safety
rings. Check the control bar fixing nuts are pointing backwards, against the direction of flight.

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Figure 10
4. Lift the wing upright on the control bar. Try
to set the control bar on level ground.
5. Remove all Velcro ties and spread the wigs
a bit (Fig. 10).
6. Remove the leading edge / cross bar
protection bags from the wing. Remove the
protection bags from the control bar apex,
from the hang bracket and from the crossbar
central unit.
7. Attach the struts according to the markings. L-left, R-right marks must be on the control frame
side of the strut on top (Fig. 11 and Fig. 12).
Figure 11 Figure 12
8. Attach the bottom front wires and secure the nose catch of the bottom wires on the nose
junction channel using the clevis pin and the safety ring (Fig. 13).
Figure 13
9. Attach the wing part of the rescue system bridle as shown on the figures 14 and 15.

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Figure 14 Figure 15
10. Carefully spread the wings all the way, lowering the nose of the wing on the ground. It
spreads itself (Fig. 16, 17 and 18).
Remove the wingtip protection bags.
Figure 16 Figure 17 Figure 18
Figure 19
11. From the direction of the keel install the
transverse battens in to the corresponding
batten pockets (Fig. 19).
12. Remove battens from the batten bag and
check each batten for symmetry against the
corresponding batten from the other wing.
Align the battens at their front tips, and at
about the 60% of the chord point. There
should be no deviation of more than 3 mm
(1/8’’) from one batten to the other along the
full length of the battens.
If you choose not to check your battens for
symmetry before each flight, you should, at a
minimum, check them once a month.
Aeros convention is that the red marked battens go in the left wing and green marked battens in
the right wing. Battens are numbered from the center outwards, and the longest batten in a Still
TL is designated as the "No. 1" batten. Install the cambered battens in the sail.
CAUTION: INSERT BATTENS CAREFULLY, SO AS TO MINIMISE STRESS AND WEAR ON
THE SAIL.
Never insert or remove battens with the crosstube tensioned (except for up to the last three on
each side) and never insert or remove battens with heavy wind pressure on the top of the sail or
in any condition which causes the battens to slide with great resistance in the pockets.

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Figure 20
13. Remove the auxiliary bungee from the
shackle and the hook.
Take the sweep (crosstube tensioning) wires
shackle with one hand and check that the
sweep wires are not twisted. At the same
time with another hand pull the crossbar
backwards – this will considerably help
attaching the shackle of the sweep wires to
the hook, placed on the keel tube (Fig. 20).
14. Install the tip battens and fix all the
battens with the double tensioned ropes
and rubber bands.
15. The next step is to install the outboard sprogs. Swing the sprog away from the leading edge
and push it towards the leading edge in to the receptacle. Make sure the sprog sits all the way
in the sprog receptacle (Fig. 21).
Figure 21 Figure 22
16. Install the inboard sprogs. Swing the sprog away from the leading edge and fix it with
buckles as shown on the figure 22.
17. Fix the side strut back-up wire with bolts and nuts and secure with safety rings as shown on
the figures 23 and 24.
Figure 23 Figure 24

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18. Install the strut upper cover (Fig. 25) and strut / control frame protection cover (Fig. 26).
Figure 25 Figure 26
Figure 27
19. Now your wing is ready to be mounted on
your trike (Fig 27).
Don’t forget to install the nosecone when you
mount the wing on the trike.
WARNING
DO NOT FLY WITHOUT THE NOSECONE!
6. PREFLIGHT PROCEDURE
Conduct a complete preflight inspection of the wing, checking all assemblies, which have not
already been checked. Every bolt, nut, pin, safety ring, and fastener of any kind should be
checked during every pre-flight. A full pre-flight inspection should precede every flight you make,
not just the first flight of the day.
Carefully check the entire length of the leading edge pocket to insure that the Mylar insert is
lying flat in the pocket. If any section of the Mylar is folded under, de-tension the crossbar,
remove as many battens as necessary and unfold the Mylar.
Along the left leading edge:
Check that the strut is properly secured, safety wire is engaged and the safety ring is installed
(Fig. 28).
Open the crossbar / leading edge junction access zipper and look inside, making sure that the
crossbar and the main sprog wire are properly secured (Fig. 29). Close the crossbar / leading
edge junction access zipper.

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Figure 28 Figure 29
Figure 30
At the left wingtip
Check that the tip batten is properly installed.
Check that the sail mounting strap is properly
installed and secured with Velcro (Fig. 30).
Along the trailing edge, left wing
Check that there are no tears in the sail material along the trailing edge.
Check that all battens are properly secured.
Check that the outboard sprog is properly secured in position supporting the last outboard
cambered batten.
Check that the inboard sprog is properly secured in position with buckle supporting the
transverse batten.
From the rear keel
Check the keel mount webbing, and bottom rear wires are safely secured to the keel tube.
Check the rear cables making sure there are no kinks or twisted thimbles.

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Figure 31
Under the wing at the control frame apex
Check the control frame apex, and the hang
block bracket hardware (Fig. 31).
Check that the shackle of the sweep wires is
secured on the hook on the keel tube (Fig. 31).
Check the crossbar tensioning cables making
sure there are no kinks or twisted thimbles and
make sure there are no signs of wear.
Check the crossbar center channels assembly
including the sweep wires/X-bar junction and
the center bolt.
Visually inspect the crossbar tubes by sighting
along the length of the crossbar tubes looking
for any evidence of damage.
Along the trailing edge, right wing: Same as for the left wing.
At the right tip: Same as for the left tip.
Along the right leading edge: Same as for the left leading edge.
Figure 32
Under the wing at the control bar: Sight
down the downtubes, making sure that they
are straight.
WARNING
DO NOT FLY WITH BENT DOWNTUBES!
Check that the strut is properly secured to the
control frame and the safety ring is installed.
Look under the protection cover and check for
proper installation of all nuts and safety rings
at the control bar corners (Fig. 32).
7. SPEED TO FLY
The range of trim speed for the Still TL is 78 - 85 km/h (47 - 53 mph).
The range of the stall speed for the Still TL is 50 - 52 km/h (31 – 33 mph). The wing is stable at
the beginning of stall. While pushing out the base bar, the bar pressure is progressively
increase.
The Still TL, depending on the wing load, speeds up to 100 - 105 km/h (63 – 65 mph), being
essentially roll neutral, with no tendency to yaw. The bar pressure will increase progressively as
the speed increases.
WARNING
ALL SPEEDS ARE MEASURED WITH AEROS-2 TRIKE.

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8. STILL TL BREAKDOWN
Breakdown of the wing is the reverse of assembly.
1. Remove the nosecone. Put the nose of the wing on the ground.
2. Remove the strut upper cover and strut / control frame protection cover.
3. Disengage the outboard sprogs. Pull the sprog out of the leading edge receptacle, swing it
towards the leading edge and fix it with the Velcro.
4. Remove the tip battens.
5. Disengage the inboard sprogs. Undo the buckle and let the sprog to swing towards the
leading edge.
6. De-tension the crossbar sweep wires.
Attach the auxiliary bungee to the shackle and to the hook as shown on the figures 33 and 34.
Figure 33 Figure 34
7. Remove all battens out of the sail, except for the nose batten, and store them in the batten
bag.
8. Remove the transverse battens.
9. Install the wingtip protection bags.
10. Lift the nose of the wing up and lower the rear part of the wing down until the wingtips of the
wing rest on the ground.
11. Fold the wings approx. 30 % from fully closed.
12. Take out the wing part of the rescue system bridle if it has not been dismounted earlier.
13. Detach the bottom front wires from the nose junction channel.
14. Detach the struts.
Pull the sail out away from the keel until it is even on top and bottom. Roll the sail gently and
carefully.
NOTE
Try to roll the sail in such way that the leading edge portion remains as smooth as possible. Do
not attempt to stuff the sail between the Mylar pocket and the leading edge tube at any point

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where you feel resistance, and do not attach the Velcro ties tight so as to induce creases in the
Mylar or leading edge sail material.
Working from the trailing edge, roll the sail tightly to the leading edge. Finish rolling the sail in
the area of the outer sprogs and install the wing tip cover bags.
15. Install the leading edge / cross bar protection bags on the wing (Fig. 35).
Figure 35 Figure 36
Figure 37
16. Install protection bags on the control frame
apex, hang bracket (with the hang bracket
positioned upside down) and on the crossbar
central unit as shown on the figures 36 and 37.
Stow the battens in the batten bag in the front
part of the wing. Install the Velcro sail ties
around the wing.
WARNING
FOLDING THE WING WITHOUT THE HANG
BRACKET PRORTECTION BAG WILL
CAUSE THE CROSSBAR TUBES DAMAGE.
17. Install the wing bag. Lower the wing on the ground.
18. Detach the control bar.
19. Fold up the control frame and install the control frame bags, lay the control frame against
the keel.
20. Fit the control bar in the protection bag and stow it between the leading edges in the aft part
of the wing. Stow the nosecone under the most forward Velcro.
21. Zip the wing protection bag up.

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9. WING TUNING
Properly tuned, the wing is safe, comfortable and fun to fly. The wing has been tested and tuned
by the manufacture or your dealer. However, in case you have enough experience, you may
tune the wing by yourself, as written below, if necessary. There are a number of adjustments
that affect the flight characteristics.
WARNING
DO NOT PERFORM MORE THAN ONE ADJUSTMENT AT ONCE. IF YOU DO NOT HAVE ENOUGH
EXPERIENCE TO TEST FLY THE WING, ASK MORE EXPERIENCED PILOT TO DO IT FOR YOU. IT
SHOULD BE PERFORMED IN SMOOTN AIR AND WITH CAUTION.
BATTENS
The battens will need to be compared and adjusted to match the batten profile template at
regular intervals. Small variations in batten camber (± 10 mm at the trailing edge) will not have
significant effect on flight characteristics.
BATTEN TENSION
With some airtime on the wing the battens tension may get too loose, this may cause the trailing
edge to flatter. If the battens tensioned too much, the handling will become harder. Make sure
the battens tensioned on both wings identical.
All battens on the Still TL are tensioned by ropes and elastics.
To check batten tension measure the distance from the batten end saddle to the knot when
pulling the rope (elastic). This distance should be 1 cm for rope and 3cm for elastic.
To change batten tension undo the knot, change the rope (elastic) length and tight the knot
again.
TURN CORRECTION
Figure 38
There is a self-tapping screw for the turn
adjustment at the outer part of the leading
edge # 3 (Fig. 38)
By adjusting a wingtip down, the lift on the
end of that wing will be increased and that will
lift that wing in flight. Adjust the self-tapping
screw up by 2.5 mm at a time.
By adjusting the wingtip up, the lift will be
decreased on that side and the wing will drop
on that side. Adjust the self-taping screw
down by 2.5 mm at a time.
Adjust one wingtip at a time and test fly after
each adjustment.
CG ADJUSTMENT
CG adjustment is done by changing the location of your hang point along the keel. The farther
forward your hang point is, the faster the wing will trim, the less effort will be required to fly fast,
and the more effort will be required to fly slow.
On the Still TL, the hang point position is adjusted by repositioning the hang block along the
keel tube.

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10. MAINTENANCE
This section contains a recommended schedule of periodic maintenance. None of the items in
this section are a substitute for the continual and consistent practice of proper pre-flight
inspections and immediate maintenance of any items on the wing, which require it. Safety
requires that your wing be fully airworthy for every flight. Nuts and bolts must always be secure,
safety rings must always be in place, and damage to any part, which could compromise the
airworthiness of the wing, cannot be tolerated. If you have a question about the need to repair
or replace some part of your wing, feel free to contact your dealer or Aeros directly. It is not
always obvious which items require attention and which may not. Minor dents or dings in a non-
critical location on an airframe tube may not require any repair or maintenance. On the other
hand, a wire that has been kinked one time can fail very quickly after that, and should be
replaced immediately.
We recommend that you have all maintenance work done by your Aeros dealer.
EVERY SIX MONTHS
1. Check the sail washout as described in the SPROG MEASUREMENT section.
2. Check your battens on a flat level floor against the batten diagram provided, and correct any
that deviate from the pattern by more than 6 mm (1/4").
3. Have a complete inspection performed on the wing and replace any suspension system
component that shows any wear, and any cable that shows any kinks, wear, damage, corrosion,
etc.
4. Inspect all bolts for tightness, all safety rings for proper installation and possible damage.
Inspect plates and fittings for damage, holes in tubes for elongation.
5. Inspect the sail for wear, tears, UV damage, loose stitching, etc.
6. Lightly spray all zippers on the wing with silicone spray lubricant. Also spray your battens
before you install them in the wing to lubricate the insides of the batten pockets. Do not use any
other type of lubricant. Wipe off any excess silicone so that it does not attract dirt.
7. Inspect the outboard sprogs. If the sprogs have been loaded heavily, it is possible that the
sprog tubes may have been bent.
EVERY YEAR
In addition to the normal six month service items, also perform the following:
1. Have the sail completely removed from the frame and disassemble all frame components.
Inspect every part of the wing for any damage or wear. Inspect the tubes for straightness and
for signs of corrosion.
2. Anytime you have the sail off the frame, inspect all of the batten pockets and batten pocket
terminations.
3. Replace hang block heart bolt.
SPECIAL CIRCUMSTANCES
1. Any time you suffer a crash or extremely heavy landing you should have an “annual”
inspection done on your wing to insure that you find all damaged parts.

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Heavy landings may also impose very high loads on the sprogs and bridle lines. Inspect them
accordingly.
2. If your wing is ever exposed to salt water you will need to have the wing completely
disassembled in accordance with the recommended annual inspection procedure. All frame
parts will need to be disassembled, including the removal of all sleeves and bushings, flushed
liberally with fresh water and dried completely.
3. If you fly in a dusty or sandy environment, it will help to prolong the life of your batten pockets
if you wipe each batten with a rag before you install it in the sail.
4. A wet wing must be dried before storing. Do not leave your wing wet for more than one day,
because corrosion may result.
5. Take special care to avoid ice-covering the wing, particularly the leading edge in wintertime.
6. If you fly regularly at the coast in windy conditions, be aware that the sea mist spray can have
the same effect. Hose down your wing after such flights, and keep a special lookout for
corrosion.
7. Keeping your sail clean will extend the life of the cloth. When cleaning the entire sail you
should generally use only water and a soft brush. You may clean small spots or stains with any
commercial spot remover that is labeled for use on polyester.
A NOTE ABOUT CABLES AND CABLE MAINTENANCE
The cables which support the wing’s airframe are critical components of the wing’s structure,
and must be maintained in an airworthy condition. It is a general practice in the design of aircraft
structures to design to an ultimate strength of 1.5 times the highest expected load in normal
service.
The wing’s cables, like other structural components on the wing, are typically designed with a
structural safety factor of only about 50% above the expected maximum load. No significant loss
in cable strength can be tolerated.
A cable with even a single broken strand must be replaced before the wing is flown again. A
cable which has been bent sharply enough to have taken a permanent set must also be
replaced immediately.
Some degree of fatigue due to repeated bending of cables is almost unavoidable in an aircraft
that is assembled and disassembled regularly.
SPROG MEASUREMENT
The Still TL uses inboard and outboard sprogs in combination with one transverse batten on
each inboard sprog. Each transverse batten spans two top surface battens, so a total of six top
surface battens are supported. The sprog system is the primary component of the system,
which provides pitch stability.
The function of the system is to support the trailing edge of the sail at low angles of attack, and
thus provide a nose-up pitching moment. The inner sprogs are adjusted at the factory to their
proper settings. The outer sprogs are non-adjustable.
The inner sprog angles should be checked regularly. This can be done with any digital
electronic angle meter as follows:
1. Fully set up the wing on a reasonably level surface.

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2. Rest the keel tube on a support and using the angle meter as shown on the figure 39, set the
angle meter to zero. Maintain this keel tube angle during further measurements.
Figure 39 Figure 40
3. Place the worktop of the angle meter under the middle part of the inner sprog close enough
to the sprog wire attachment point so that the entire worktop surface of the angle meter touches
the sprog (Fig. 40).
The scale of the angle meter will show the sprog angle.
The inner sprogs for Still TL should be set to 11 deg.
Figure 41
To adjust the main sprog angle:
1. Remove the pin from the sprog threaded
adjuster at the front of the sprog. To raise the
sprog angle turn the end of the sprog threaded
adjuster counter clockwise. To lower the sprog
angle turn the end of the sprog threaded
adjuster clockwise (Fig. 41).
2. Re-install the pin to the sprog threaded
adjuster and press down firmly on the rear end
of the sprog to seat the cable before checking
the measurement again.
11. REMOVING THE SAIL FROM THE AIRFRAME AND RE-INSTALLING
Many maintenance and repair procedures will require the removal of the sail from the frame.
Please follow these instructions when removing and reinstalling the sail. Please read all the
instructions for each operation before beginning.
SAIL REMOVAL
You will need an unobstructed area 2 m by 9 m (6x30 ft). Make sure the surface is clean. If it is
abrasive, you should either cover it with protective tarp or be extremely careful not to scrape
your sail.
Since Still TL is a single surface wing the sail removal is rather easy to perform.
1. Unzip and remove the wing bag and put struts, battens and the control bar aside. Remove
Velcro straps and all protection bags from the wing.

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2. Position the wing so that the control frame is on bottom. Remove the sail mount fixing screws
from the outer leading edge tubes and mark the corresponding holes with indelible marker (Fig.
42).
Figure 42 Figure 43
Figure 44
3. Remove all battens from the sail including
the keel batten. Remove fixing tangs that fix
the nose part of the sail to the nose bolts (Fig.
43).
4. Detach the rear bottom wire and the keel
pocket fixing tang from the keel tube (Fig. 44).
Note: Reassemble the hardware removed in
its place in original order so that it doesn’t get
lost. All disassembled assemblies on the wing
must be reassembled in the proper order and
orientation.
5. Dismount the main sprogs as shown on the
figures 45 and 46. Check that the sprog lock
nut is tighten hard.
Figure 45 Figure 46