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ALIEN Assembly Instructions
V1.0
13 December 2021
Thank for the purchase of the ALIEN Flying wing. Despite the apparent simplicity of this
glider please pay very special attention to the elevon control setup. Extreme precision is
needed in the elevon controls to obtain the best from this model.
You will have the satisfaction during flight in proportion of the time spent ensuring accurate
slop-free elevon movement. Please do not ignore this crucial advice. It is also important to
set up the control movements as detailed on the last page of this manual.
PLEASE READ ALL THE INTRUCTIONS BEFORE STARTING THE ASSEMBLY.
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Summary of Contents for OA Composites ALIEN
- Page 1 V1.0 13 December 2021 Thank for the purchase of the ALIEN Flying wing. Despite the apparent simplicity of this glider please pay very special attention to the elevon control setup. Extreme precision is needed in the elevon controls to obtain the best from this model.
- Page 2 The assembly in pictures : Right wing , Right Servo tray (top view of the model) Roughen the Servo trays bottom...
- Page 3 With a rectangular section jewellers file widen the slot in the foam to let the elevon linkage move freely. Protect the bottom skin with tape before glueing the elevons horns...
- Page 4 Roughen the base of the horns...
- Page 5 Epoxy glue the elevon horns into the slots, ensuring they have good contact with the wing foam core. Do not use superglue (cyanoacrylate) – the foam will melt. Secure the elevons in the neutral position using masking tape.
- Page 6 Use a permanent marker to check the exact location of the bend before this very precise step. Be sure to avoid any angle between the two bends. The control throw, symmetry, precision of the command chain, and the absence of play are hugely important.
- Page 11 Insulating the soldered joints with heat shrink is not shown here but is highly recommended.
- Page 15 A classic dlg peg installation is shown above. To optimize the forces that are transmitted during rotation (discus launch), adjust the angle of the throwing blade while gluing . Set it to a with a natural position with respect to the length differences between your first two fingers*.
- Page 17 Epoxy glue the rudder horn into the slot, ensuring it has good contact with the foam core. Do not use superglue (cyanoacrylate) – the foam will melt.
- Page 19 Glue the fin using a small quantity of epoxy, for precise alignment.
- Page 23 Use a Dremel tool to cut a slot for the rudder pull-wire wire. Right handed launchers should have the rudder horn and the slot on the right side of the model...
- Page 25 THE Middle of the BALLAST HOLDING PIECE must be placed at the CG location : between 29 to 30mm from Wing Leading Edge. Glue with epoxy or super glue/ cyanoacrylate...
- Page 26 Glue with epoxy or super glue/cyanoacrylate...
- Page 27 Glue with epoxy or super glue/cyanoacrylate...
- Page 29 Suggested ballast slug (not provided). Approx 19 mm diamter by up to 50 mm long The last assembly operation is balancing the glider for a 29-30mm CG. We need between 45 and 50 grams of lead. Yes, a longer nose would allow a lower the total weight but the extra nose length would have required more fin area, and would have increased the moment of inertia, making the model les responsive.
- Page 30 As you may know, flying wings are very sensitive to elevator neutral position even more so to CG location. Here some tenths of a millimeter can really be felt. The ALIEN glider needs +/- 3.5mm Up and Down rates for elevator. NO MORE FOR NORMAL FLIGHT! A HIGH precision (resolution) is required, that’s why the elevon servo mount and control...
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Page 31: Flight Phases
For a DLG use, with a bit of practice, the glider can be caught by hand or PEG. Land in the normal way for the first flights, nose to the wind, and only try hand catching when you are used to its response. In conclusion, the control movement should be setup to give at least 9mm down and The maximum possible up. - Page 32 HAVE FUN WITH THE « ALIEN » ! OA COMPOSITES Team...
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