But these sections you are going to use have only a small part of the curvature of original wing. So height doesn't remain. If you join parts (18,5 cells) smoothly, keeping their shape, there will be even less curvature than what my plan suggest. But like I wrote earlier it is not that precise for curvature because foil kite structure is soft and able to adapt to different shape. Just don't go too far from the original shape it will be ok.klimm wrote: I meant that due to cutting of the central 19 cells, about 4 m, the projected length became only 5 m but the height remains and the 2 parts to be merged, will want to keep their shape.
Nowadays kites are depowerable, it means AoA changes with the bar movement. At low end AoA is limited by stability and/or L/D, high end is reached when kite backstalls. There is also "sewn in" AoA, but in your case that doesn't matter because parts are done already. But you must cut/sew mid-cell seam correctly: if you make that cell wedging you will produce (in a crude way) some AoA in kite itself which may not be a good thing.klimm wrote: What I absolutelly don't know is the AoA used in kiting, and the way the designers play with AoA to modulate power.
There was some basic info in some website, I don't know if it is still there.klimm wrote:Is there a place(thread maybe) to learn details about SP?
You're right, and the foils are set radial.But these sections you are going to use have only a small part of the curvature of original wing.
Well done And seam allowances are inside the cell now?klimm wrote:I cut the PG and sew it with no problems, 37 cells.
I don't think keeping lines attached helps at all. Just try to design new canopy curve which does not deviate too much from the original shape of the parts. It will be fine.klimm wrote: (I kept the lines on it ) in order to see the shape and determine some parameters for input into SP
Measure that from the center, then calculate % of the chord. Other line rows as well.
Ok, but I don't think that will help. Just make a model from it and trust it. You must find out what is 2-D shape of the kite (plan view) (actually you see that from Ozone line plan picture well enough) and then make a model and decide how much canopy curve your kite will have. Use profile alignment adjustment (tip/center), input cell count, wing span, center chord, tip chord (% of center), kite shape (elliptic, 0% square, some front curvature not much if any rear curvature) and rib spacing (propositional to chord degree %). You probably have to adjust kite shape manually to get wingtips correctly shaped because they are so narrow. That option is on same window.
Don't worry about that, use default value. You must adjust tow point/AoA anyway, this is done with some adjustment lines with knots. Your kite will fly with default value, but it may collapse etc.
That is ok, but you must cascade them chordwise, at least if you want to try some depower (mixer/speed system) in it. It will become extremely complicated if that many line rows is tried to be constructed to each having their own pulling ratio.
Yes. Spanwise cascades are solved, do it like my plan suggest (it is also quite close to original bridle). Chordwise there is many options, both for mixers and how line rows cascade. I suggest to use normal two-pulley mixer (1:2:4 pulley ratios). One possibility could be:
Ok, and you can adjust also the level of proportional. If it 100% all cells have similar width/length ratio, if 0% spacing is equal (cell width is constant).klimm wrote: I made the width of the panels proportional to chord which is a good approximation of the real canopy
You can avoid that by inserting 1 on every level of cascades first. But because it is a PG there will be some manual work to get wingtip bridle finished, but you can do it.klimm wrote: This would be the spanwise cascade except the 1 at the tip, because the program insist to pair this with the next(5)
Right. Yes, usually they are.klimm wrote: I set the anchor points according to the last (in the center) profile chord measurements. It looks the others would be proportional
You mean you would use original Vulcan bridle lines for the first level?klimm wrote:Chord wise, as the firs level of lines are already in place
Sounds reasonable.klimm wrote: A: fixed
B and C cascaded together as they are very close to another. Pulley as per speed system of the PG and trimmed if needed
D ( E only if needed) cascaded together,
Z comes at 5cm from TE all over.
Users browsing this forum: Adventure Logs and 2 guests