Titan Dynamics Raven User manual
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Contents
Section 1: Model Information ................................................................................................................. 3
Section 2: Model Specifications & Performance............................................................................... 4
Section 3: Required Build Materials ...................................................................................................... 5
Section 4: 3D printing ................................................................................................................................ 6
4.1: Things to know before you start printing. .............................................................................. 6
4.2: Part Orientation............................................................................................................................... 7
4.3: Tuning “hole horizontal expansion”........................................................................................... 8
4.4: Bed Adhesion and warping........................................................................................................... 8
Section 5: Assembly of 3D Printed Parts ...........................................................................................10
Section 6: Final Setup & Tuning Tips ...................................................................................................15
Section 7: Additional Images .................................................................................................................16
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Section 1: Model Information
It’s unlikely you’ll find another model aircraft like the Titan Raven. Its twin-pusher motor layout
and shallow v-tail make it truly unique –giving it a distinct look in the sky that is sure to stir up
interest. Coming in at 1.6 meters of wingspan, this bird is capable of multiple hours of mixed
agility flight. Speaking of agility, the Raven cuts through the air like a hot knife through butter –
with purpose and excellent handling. Extensive CFD analysis went into creating Raven, giving it
the unique look while preserving pitch, roll, and especially yaw stability. For yaw control and turn
coordination, we recommend using differential thrust. Not only can the wings be removed but
also the stabilizers in the tail, making it easy to carry along to your favorite flying spots. As with
all of our models, antenna separation is maximized via large bays underneath the wings for the
VTX and RX. Pictures do not do it justice, and we’re certain you’ll be spending lots of time just
looking at it from every angle. We hope you enjoy many flights with this beautiful machine.
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Section 2: Model Specifications & Performance
General Stats:
•Wingspan: 1607mm
•Wing area: 3205cm2
•Maximum take-off Weight: 5kg
•Cruise speed: 60-70kph
•Recommended prop diameter: 9-10 inches
Aerodynamic Properties:
•Root airfoil: NACA 3410
•Tip airfoil: NACA 3410
•Root chord: 240mm
•Tip chord: 95mm
•Average Chord: 173mm
•Root incidence: 3°
•Tip incidence: 0°
•Aspect ratio: 7.95
•Max L/D: 14.5
•Dihedral: 0°
•Sweep: 2°
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Section 3: Required Build Materials
Spars needed:
(2) 8x1000mm (main wing spars)
(4) 3x400mm (wingtips + aileron hinge)
(2) 4x230mm (tail support)
(2) 3x230mm (taileron hinge)
(2) 2x70mm (front tail support –optional)
Recommended motor & prop:
16-19mm mounting pattern
2212 / 2216 1000 kv or similar
9-10 inch CW/CCW propeller
Recommended electronics:
TBS crossfire / ELRS / Dragonlink
5.8ghz / 1.2ghz video (19x19 camera)
Matek F405-WTE flight controller or similar
Matek M8Q-5883 GPS/Compass or similar
35a BLHeli ESC
(4) Emax ES08MAII servos
Battery: Anything from a 7,000mah 4S/6S Lipo to 4S6P 21,000mah 18650 Li-Ion
Misc:
Polymaker Polylite prefoamed LWPLA
Polycarbonate or other high-temp filament for the motor mount
Medium CA glue
220x220x250 minimum size print bed (Ender 3)
Control horns (this one).
M3 threaded inserts (max 6mm height)
M3 bolts of various sizes
6x3mm magnets
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Section 4: 3D printing
4.1: Things to know before you start printing.
1. Titan Dynamics strongly recommends using Polymaker Polylite prefoamed LWPLA
for the best results. This filament is much easier to tune your printer for and has
less stringing than active foaming filaments.
2. You likely will not get good results unless your printer is well maintained and
calibrated, we would suggest learning how to check and adjust your printer to
perform at its absolute best before starting. This website has useful guides:
https://teachingtechyt.github.io/calibration.html#intro.
3. All the below guidance should be taken as a starting point only. Print a test piece
and check things like retraction settings and fitment of the carbon rods in the
wings for yourself as every printer is different. If the carbon rods are too tight,
increase the “Hole Horizontal Expansion” setting in Cura (or the equivalent setting
in other slicers).
4. All our models are designed to be printed predominantly in LW-PLA filament. All
fuselage, tail, and wing parts should be printed in LW-PLA.
There are 3 levels of infill / wall settings that we recommend for the LWPLA parts:
1. Maximum efficiency: 3% cubic subdivision, single wall
2. Balanced efficiency and strength: 5% cubic subdivision, single wall
3. Maximum strength: 8% cubic subdivision, single wall
WE RECOMMEND PRINTING RAVEN WITH 3% CUBIC SUBDIVISION INFILL
Notes:
•For the best flight characteristics and maximum range, LWPLA parts should be
printed with single wall and 3% cubic subdivision infill.
•Cubic subdivision infill can be increased to 5 or 8% to increase durability, but this
will have an impact on maximum payload capacity (battery), and range by
extension. We recommend and use 3% cubic subdivision infill as it has been tested
to survive 6.4G in flight, but some may desire greater general durability when
handling/carrying the model around etc. It will still break if you crash it!
•Because the fuselage takes the most abuse during landings, some may choose to
just print the fuselage sections in higher infill. Using a higher infill just for the
fuselage (4%-8%) can greatly increase the longevity of the plane without as much
of a weight penalty as printing the entire plane in high infill.
Polycarbonate, PETG or other high-temp filament should be used for the motor nacelle
caps and wing bay covers.
•High temp Polycarbonate or PETG parts should be double wall and high infill (25%).
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We recommend using the newest version of Ultimaker Cura. This link can be used to
download our own slicer profile.
4.2: Part Orientation
It is necessary to orient each part correctly on the build plate to avoid disconnected
overhangs. Take care when doing this as the entire model is designed to be printed with
no supports. If you orient some parts wrong, the print will fail. It may also be necessary
to rotate and carefully position some parts to fit within the build area on smaller
printers.
Examples for part orientation:
Fuse4
Fuse2
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Wing1 (no skirt/brim)
4.3: Tuning “hole horizontal expansion”
It is very important to check the fitment of the carbon rods in their holes on the first
parts you print. Because everyone may be using different printers, materials and slicer
settings, it is not possible to provide the models with a slicing profile and hole size that
will work for everyone.
Print your first part with carbon spar hole and check fitment, if it is too tight increase the
hole horizontal expansion setting in the “walls” section in Cura (or your slicer’s similar
setting). A good starting point is 0.25mm. If it is too loose, just decrease the setting until
you can reliably push the rods in and still get a snug fit.
4.4: Bed Adhesion and warping
When printing tall parts like this model requires, having good print adhesion to the bed is
a necessity. Ideally you will print each part without any extra aids, however this may not
be possible for many, especially those printing without an enclosure for their printer. A
full brim can be used but this will typically have mixed results. If it works for you, use a
glue stick on the print surface to improve adhesion. Cura also has a plugin that can be
used to help with bed adhesion and to avoid warping.
Cura Marketplace: TabAntiWarping Plugin.
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When installed, use the new icon at the bottom of the left menu to choose tab diameter
and thickness, then click on the model to add a tab at each point you think is at risk of
warping or poor adhesion (typically parts with low surface area in contact with the print
surface in relation to their height). These new tabs can now be moved around to fine
tune their position using the normal move controls on Cura.
Once completed, be careful when removing these tabs from the print as they are quite
strong and can damage the bottom of your part if not removed carefully. Re-open any
holes the tab may have filled on the bottom of the print.
If you find these hard to remove from the print bed, select the “Define as Capsule”option.
This makes the edge of the tabs raised, so you can get a scraper underneath them.
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The spar layout for Raven is as depicted below. None of the spars need to be glued in,
they will all be retained by the printed parts. The two wing spars that intersect the
fuselage are the joiners for the wings and the fuselage and can be removed completely
from the fuselage and wing during transport.
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•Medium CA glue should be used to assemble all fuselage parts
•When first putting the glued parts together be sure to wipe any excess glue off
before it sets. A kicker may then be used to speed up the setting time; technically
this results in a weaker joint, however it will still be stronger than the base material
LW-PLA.
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•Use care when aligning parts for gluing. With medium CA, you should have a few
seconds to get alignment right. Small mistakes in alignment can stack up and
eventually lead to a part not fitting perfectly. We have taken care when designing
the aircraft to make sure there is tolerance for some minor mistakes, but try to be
as perfect as possible when gluing.
•When gluing the wings together, use the carbon rods to ensure alignment however
be careful not to glue them in, they should not be glued in on the final product.
•IMPORTANT! - Do not glue the wing tips on until you have the carbon rod and
aileron/flap installed as it’s the wing tip that secures these in place. If you glue the
wing tip on before inserting the control surfaces + carbon rod you will not be able
to insert them afterwards.
•Threaded inserts can be properly installed by using a soldering iron at low heat
setting, a good guide for doing this can be found at this link.
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Section 6: Final Setup & Tuning Tips
•Titan Dynamics strongly recommends the use of Arduplane for all our models.
•Give all control surfaces +- 35 degrees or more throw.
•Setup motor rotation such that props rotate inwards towards the fuselage for
added torque roll during differential yaw.
•Take-off does not require flaps, but landing can be done easier with half flaps.
•CG is marked under the wing, and should be kept very close to that point.
•Add duct tape or other abrasion resistant material to bottom of the fuselage to
increase durability if landing on rough surfaces.
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