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Re: [AWES] Self-launching among other things

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  • dave santos
    Pierre,   Arches do in fact seem favored over single-line at the largest multi-km scales. An arch on the km scale NEED NOT maintain proportions by
    Message 1 of 2 , Aug 5, 2012
      Pierre,
       
      Arches do in fact seem favored over single-line at the largest multi-km scales. An arch on the km scale NEED NOT maintain proportions by area. Even a single toy kite acts as an arch on two lines spread 1km apart, displaying the unique virtue of arches (absolute yaw stability). The mathematics of fractal dimansions and engineered porosity quanifies the variable proportion of area-to-scale.
       
      Even arches are not the end configuration, but tensile "cathedrals" made of arched string and rag vaults and domes. Yes, single-line systems have many important roles, but the most powerful megascale AWES is not one of them, in my opinion.
       
      Maximum AWES scale is predicted in KiteLab Group circles to combine passive and active controls. Purely passive or purely active control concepts, as extreme freaks, will not easily compete with hybrids, especially on a grand scale. Human supervision of large semi-automated AWES is also imperative for a long time to come.
       
      daveS
       
      PS Note that only AWES active control actuation from the ground can be powerful enough to never saturate (with lowest flight-weight), as it can be massive and over-spec by a large safety factor. Overbuilt reliability is also secured with ground actuation. Passive stabilities ease active actuation requirements.
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