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This mobile kite is definitely suitable for aerial photography as it is very stable in flight and performs well in medium wind conditions.
It consists of eight diagonal isosceles triangles connected in pairs at the bases, and four identical horizontal triangles of wings.
Tires consist of two horizontal longitudinal spars, two horizontal cross members and two orthogonal vertical spars. At the bottom, a shorter spar is connected to the tops of the pyramids, which gives the structure additional stability.
To build a three-dimensional box, it is better to prepare a cardboard template in the form of a rectangular triangle, which is the base module, taking care to add the edges necessary for seams and forming a longitudinal pocket.
It is desirable that the longer side (the hypotenuse), which will become the edge of each wing, be curved to form an arrow of a few centimeters to improve sail tension, and that the spinnaker weave be parallel to that side to avoid wrinkling. in the veil
For the wings you need 8 pieces, and for the body of the snake - 16, the difference between the two types is only in the addition of an additional rib 3-4 cm on the smaller side of the latter.
Having connected the triangles along the stitching (1) (p. AA) and having received 12 isosceles triangles, they can be edged along the long sides (p. BB) and sew cord loops at the ends (2) .
This construction technique is easy to perform and also has an excellent aesthetic appearance, for the loops it is necessary to choose a strong nylon stocking cord, it can be pre-fixed with a very tight zigzag under the reinforcing edges (3) and then put on it a dacron stiffener (8) with an additional seam for added security.
Then reinforcements (4) and lavsan rings (6) are attached to the ends on one side. Reinforcement (5) has a hole for the passage of the transverse rod and should only be located in the two upper parts of the body, located in the middle of the triangle, as in the figure.
At this point, the triangles can be assembled by sewing them 2 by 2 for the corner with a zigzag stitch (7) and then joining them with longitudinal stitches of the CC section to form a part that is half a kite.
In the design shown, the ribs and bolsters are drawn for clarity; some of these can be omitted for a simpler build but since this is a high wind kite I still stick with the idea of not skimping too much on the dacron...
It remains only to connect the two halves with four lanyard loops at the tops of the upper and lower body triangles, four more loops inserted into the Mylar rings (6) will hold the two longitudinal spars in position.
The slats can be made of 8 mm ramin wood for two longitudinal spars and 10 mm for the rest, or made of fiberglass using a 10 mm diameter pipe with a thickness of 1 for the first and a 12 mm diameter. . 1 for the rest. Of course carbon will work too, in which case I would use 8mm and 10mm.
It is recommended to add an additional rope loop at the end of the wings so that the tension of the sail can be adjusted and avoid too short battens (you always have time to trim...).
In this regard, you can use loops of different lengths to change the height of the kite and increase its lift while maintaining the same armor.
Notches for attaching the sail should be inserted at the end of the crosses and spars, in the case of ramins, they can be obtained by simply making reinforced notches with a strapping and dipping in wood glue.
To attach the cross member to the vertical spar, you can prepare a PVC or nylon cylinder with two orthogonal holes, to connect it to the spar connecting the two lower peaks, you can use T-connections of the same material located above the end. notches and when the haze comes to the lower top.
Lanyards with a lark at each end, strung between the vertical stringers in the T-junctions, will prevent the armor from slipping out of the joints.
trid.pdfThe bridle is fixed at one point and exactly at the lower front peak with a lark around the T-joint, for added security a lanyard can be added that connects the hinge to the upper trunnion of the vertical spar.
The dimensions of the project are indicative and certainly can be increased or decreased; with such dimensions and moderate wind, there are no problems with lifting photographic equipment.
It is a very stable flying kite and the single attachment point bridle allows it to navigate better even in turbulent conditions.
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