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    Strahlungsdosisleistung und Kabinendruck während eines einstündigen Fluges [OC]


    Strahlungsdosisleistung und Kabinendruck während eines einstündigen Fluges [OC]

    Von GreenIbex

    View 9 Comments

    9 Comments

    1. GreenIbex on

      Source: a friend of mine recently took a 1h flight. She used a Radiacode 102 to measure the radiation dose rate (in units of nSv/h), due essentialy to cosmic rays. As expected, radiation dose rate grows with altitude. The pressure sensor of her smartphone provided the cabin pressure data, which can be considered a sort of proxy for altitude. Again, as expected dose rate and pressure are anti-correlated.

      Tools: this plot was made with Python (pandas, matplotlib, numpy).

    2. iamnogoodatthis on

      Cool! You should look up the flight on flightradar24 and download the gpx to get the altitude data to add to the chart 🙂

      (I don’t know if you need to subscribe to be able to do that or whether you get a few days’ history for free)

    3. avgprius on

      Pilots, especially fighter pilots have increased rates of cancer. Not having the thickest part of the atmosphere protecting you from solar radiation tends to do this. Especially since they are essentially in front of a giant windows, at least as a passenger you are mostly encased. Tradeoffs 🤷🏾‍♂️

    5. Hattix on

      Cabin pressure is a poor proxy for altitude. The cabin is pressurised usually to 8,000 feet maximum so there’s a hard limit there. Most newer airliners will use a lower cabin altitude, usually 5,000 to 6,000 feet, while the aircraft itself will be cruising between 30,000 and 45,000 feet.

      At the estimated 780 hPa here, the pressure altitude was 7,000 feet.

      So why did the radiation dose plateau as the cabin pressure flattened off?

      It didn’t! it continued to rise as the aircraft did, increasing from 400 nSv/h to over 700 nSv/h. It then plateaued as the aircraft reached maximum altitude.

    6. RedlurkingFir on

      If you ask r/futurology, they’ll tell you that the only solution to prevent excessive radiation while travelling will be to increase cabin pressure!

    8. lngdaxfd on

      Average background radiation in US is around 340 Nanosievert/h, every 24 hours, 365 days. The human organism is adapted to this level of radiation. Here we have roughly a doubling of the yearly background for maybe 45 minutes. Very likely the plane shields the background radiation, thatswhy the ground levels are at 50 nSv/h.

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