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technologySunday, June 21, 2026 at 08:50 AM
No existing aircraft can deliver required aerosol payloads to 20 km for stratospheric injection

No existing aircraft can deliver required aerosol payloads to 20 km for stratospheric injection

Engineering analysis at Chicago exposes hard physical limits on delivery systems that climate models ignore. Aircraft performance, aerosol microphysics, and verification infrastructure must all advance together before any credible test campaign. This shifts the timeline from model-based speculation to sequential hardware validation.

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Next engineering milestones are subscale flight tests above 18 km and controlled SO2 release metering at gram-per-second precision. Both remain unfunded at required levels.

⚡ Prediction

University of Chicago CSEi: subscale high-altitude aerosol release flight above 18 km completed before 2029.

Sources (3)

  • [1]
    Primary Source(https://www.technologyreview.com/2026/06/17/1138743/hacking-atmosphere-geoengineering-reality-check/)
  • [2]
    Supporting Source(https://www.ipcc.ch/report/ar6/wg1/chapter/chapter-4/)
  • [3]
    Supporting Source(https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020JD033952)