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  "id": "P-OPP-01925",
  "title": "Fly high-altitude kite turbines that harvest jet-stream wind",
  "done_when": "",
  "criteria_revision": null,
  "summary": "Independent review by claude-independent-prior-art-reviewer-20261106: No system harvests jet-stream wind and nothing approaches the Main KPI of 100,000 MW of airborne wind capacity. Commercial airborne wind (Kitepower, SkySails Power) flies soft kites at a few hundred metres with 100-200 kW class units; the sector's main problem is durability (Power Technology, April 2026, https://www.power-technology.com/newsletters/will-chinas-airborne-wind-succeed-s2000-sawes). Jet-stream kites at around 10 km remain concepts and resource studies (Archer and Caldeira; Sky WindPower, https://phys.org/news/2009-06-kites-high-altitude-electricity.amp). The best-funded rigid-wing effort, Makani, was shut down in 2020 and its code, flight logs and patents opened (https://spectrum.ieee.org/exclusive-airborne-wind-energy-company-closes-shop-opens-patents). Open simulation and optimal control exists (awebox, https://github.com/awebox/awebox). Honest limit: the Makani release and awebox are substantial open prior art for kite control and trajectories; tasks must target unsolved problems (tether mass and drag at altitude, airspace, durability, multi-km power transmission) with their own prior-art basis. (open solution found: no; known answer: no; 6 project-level searches of api.github.com/search/repositories, export.arxiv.org/api/query, api.crossref.org/works; draft c480022f7877b2435c67b628a46fb96519a504675ba242f8f31171769bf47191, source f7732619376b7fe63641931493f292962847e4dd6cebcb5b14bc37a7508d14c6)",
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  "prior_art": {
    "basis": "Independent review by claude-independent-prior-art-reviewer-20261106: No system harvests jet-stream wind and nothing approaches the Main KPI of 100,000 MW of airborne wind capacity. Commercial airborne wind (Kitepower, SkySails Power) flies soft kites at a few hundred metres with 100-200 kW class units; the sector's main problem is durability (Power Technology, April 2026, https://www.power-technology.com/newsletters/will-chinas-airborne-wind-succeed-s2000-sawes). Jet-stream kites at around 10 km remain concepts and resource studies (Archer and Caldeira; Sky WindPower, https://phys.org/news/2009-06-kites-high-altitude-electricity.amp). The best-funded rigid-wing effort, Makani, was shut down in 2020 and its code, flight logs and patents opened (https://spectrum.ieee.org/exclusive-airborne-wind-energy-company-closes-shop-opens-patents). Open simulation and optimal control exists (awebox, https://github.com/awebox/awebox). Honest limit: the Makani release and awebox are substantial open prior art for kite control and trajectories; tasks must target unsolved problems (tether mass and drag at altitude, airspace, durability, multi-km power transmission) with their own prior-art basis. (open solution found: no; known answer: no; 6 project-level searches of api.github.com/search/repositories, export.arxiv.org/api/query, api.crossref.org/works; draft c480022f7877b2435c67b628a46fb96519a504675ba242f8f31171769bf47191, source f7732619376b7fe63641931493f292962847e4dd6cebcb5b14bc37a7508d14c6)",
    "searches": [
      "api.github.com/search/repositories \"fly high-altitude kite turbines harvest jet-stream\" url=https://api.github.com/search/repositories?q=fly%20high-altitude%20kite%20turbines%20harvest%20jet-stream&per_page=10 sha256=4af480b8ee5b87b369a76c49bd22c9a783908272ebffbe97898f8ab0f0772a5f",
      "export.arxiv.org/api/query \"fly high-altitude kite turbines harvest jet-stream\" url=https://export.arxiv.org/api/query?search_query=all%3Afly%20AND%20all%3Ahigh-altitude%20AND%20all%3Akite%20AND%20all%3Aturbines%20AND%20all%3Aharvest%20AND%20all%3Ajet-stream&start=0&max_results=10 sha256=8ccbe9b5b2865f0feb545e5029bafdb540f35671be5c9875c155a034b4baaaf0",
      "api.crossref.org/works \"fly high-altitude kite turbines harvest jet-stream\" url=https://api.crossref.org/works?query=fly%20high-altitude%20kite%20turbines%20harvest%20jet-stream&rows=10&select=DOI,title sha256=182d387496066ab283c73edfcee6cd2dc6deee195a5fc6dc7cc5417de143222a",
      "api.github.com/search/repositories \"fly high-altitude kite clean energy power\" url=https://api.github.com/search/repositories?q=fly%20high-altitude%20kite%20clean%20energy%20power&per_page=10 sha256=4af480b8ee5b87b369a76c49bd22c9a783908272ebffbe97898f8ab0f0772a5f",
      "export.arxiv.org/api/query \"fly high-altitude kite clean energy power\" url=https://export.arxiv.org/api/query?search_query=all%3Afly%20AND%20all%3Ahigh-altitude%20AND%20all%3Akite%20AND%20all%3Aclean%20AND%20all%3Aenergy%20AND%20all%3Apower&start=0&max_results=10 sha256=81005fc2519b9c4ecc11da643734abad84c2913a537d606bfe656d86d1b32ee5",
      "api.crossref.org/works \"fly high-altitude kite clean energy power\" url=https://api.crossref.org/works?query=fly%20high-altitude%20kite%20clean%20energy%20power&rows=10&select=DOI,title sha256=25da989a1b16bbb9bae0933ea1a0ba7a798f79b0d52888aa17b4d4f091121e43"
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