Kites radio…& KAP

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As prep for this years Royston Kite Festival I have been asked to provide an information panel to explain the pile of wires and string we will present to the public on the day. Last time we did this we … Continue reading

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Didak Explorer 16 overblown at Bft 6

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Packing small. I have been working with the flowforms as kites to bike with. Getting the deltas on the bike is do-able but awkward. I ended up with a fairly badly loaded bike: This works but gets awkward under low … Continue reading

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KAP & UAV

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The problem with UAV: You can pop down to Maplins and get yourself a DJI Phantom and go fly, shooting video and stills as you whiz  flawlessly across your favorite landscape: what’s not to like? The shots you get from … Continue reading

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Mudlark

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This nadir shot was taken as the kite over flew its own line…. Camera flight time 15mins 236 exposures captured. Shot interval :5s Path: clickPanPro ‘A’ Canon S95 Exposure: CHDK KAP UAV 3.5 Shutter release: USB one shot Tgt Tv: … Continue reading

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A pattern of dyke, level and drain on Halvergate Marshes

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Take the train  from Norwich to Yarmouth and, as the railcar rattles its way from Acle towards the sea you pass along flatlands dotted with windmills, this is a windy place and the little train often rocks with the gust … Continue reading

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More thought on a kite stability index

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Paul Chapman pointed out the definitive text on kite stability theory is by CF Marvin, his book The Mechanics and Equilibrium of Kites  published in 1898. As a begining I suggest ‘Marvin’ as the unit of kite stability. Paul suggests … Continue reading

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A kite stability index curve

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In Damian Sailors paper this graph is used to compare kite aspect ratio with stability and wind speed:It’s quite a confusing graph to read as it seems to have 3 axes: stability, aspect ratio and wind speed. The 2 kites … Continue reading

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Some thoughts on a kite stability index

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The impact of a tail on the stability of the DL Trooper is something of a revelation to me- a simple thing can turn an unstable low AoA kite into a steady lifter albeit with decreased lift. Kite stability is … Continue reading

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Mappa by Wislawa Szymborska

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Flat as the table it’s placed upon. Nothing moves beneath it and it seeks no outlet. Above – my human breath creates no stirring air and leaves its total surface undisturbed. Its plains, valleys are always green, uplands, mountains are … Continue reading

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Photoscale and ground cover

If you need to know what the ground cover for a given camera at a given height will be the photoscale formula will do this for a true nadir shot of a level surface. Photoscale=f/h where f= focal length of … Continue reading

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