GQ Electronics Technical Support Forum Active Users: / Visits Today:
Highest Active Users:
GQ Electronics Technical Support Forum
Home | Profile | Register | Active Topics | Members | Search | FAQ
Username:
Password:
Save Password
Forgot your Password?

 All Forums
 GQ Electronics Forums
 2.GQ Geiger Muller Counter
 Flight Data, FRA-AYT
 New Topic  Reply to Topic
 Printer Friendly
Author Previous Topic Topic Next Topic  

Erwin55

Germany
41 Posts

Posted - 10/31/2022 :  04:01:04  Show Profile  Reply with Quote
Dear All,
on 18.10.2022 I was flying from Frankfurt to Antalya. Find the data in the graphic attached. The counter (GMC-300E+) was stored under the seat. I didn't care about GPS-data, or hight. My intension was only to produce some reliable data with double byte input to test and refine my parser. Hence, the data where recorded in CPM.
The data where downloaded and parsed whith Matlab. A .bin-file is also existing. If someone (Ullix?) can give me a link where I can upload the .bin I would share the file with other guys who are interested in.
On my flight back home I will put the counter in the suitcase, so that it's transported in the trunck. If there is a significant difference to the cabin, I will post these data also.


Reply #1

ullix

Germany
1107 Posts

Posted - 10/31/2022 :  04:22:33  Show Profile  Reply with Quote
Nice!

I am always interested in such data. And if you give permission for public use of the data, I would like to put them to the other flight data on my GeigerLog site (https://sourceforge.net/projects/geigerlog/files/Data%20-%20genuine%20recordings%20-%20as%20log%20or%20bin%20files/) to make them freely available.

To upload the data you can make a post under 'Discussion' at my sourceforge site (https://sourceforge.net/p/geigerlog/discussion/) and attach your data.

Please, post your return flight as well!

Since it takes only a few hours from check-in to landing, you could also record in CPS mode. This may catch a few more details of the X-ray scan! (I assume the big single-point peak is the hand-luggage X-ray).

P.S. you have done downloading, parsing, and graphic more easily with GeigerLog.

Go to Top of Page
Reply #2

Erwin55

Germany
41 Posts

Posted - 10/31/2022 :  05:14:35  Show Profile  Reply with Quote
Already done.
Go to Top of Page
Reply #3

ullix

Germany
1107 Posts

Posted - 10/31/2022 :  05:48:53  Show Profile  Reply with Quote
... and I got it, thanks. Data are all ok; GeigerLog can read it without problems.
Go to Top of Page
Reply #4

Erwin55

Germany
41 Posts

Posted - 01/17/2023 :  07:05:19  Show Profile  Reply with Quote
Dear All,
as promissed some months ago, I'll distribute the flight data FRA-AYT on 13.01.2023 with the counter in the trunk. You can in the picture that there is not much difference in comparison with a place the overhead locker in the cabin. What is different: There is also a x-ray check at the destination airport, which make sense. The data is recorded in CPS and re-calculated to CPM (movsum(60)).
@Ullix: I tried to upload the bin-file (created with GMC-Data-Viewer) to your blog, but Sourceforge complained that javascript is not installed. But it is and also enabled in Firefox. The same problem with Edge. To be honest: I will investigate that later when I'm back home in some weeks and upload then.
Go to Top of Page
Reply #5

Erwin55

Germany
41 Posts

Posted - 01/17/2023 :  07:19:40  Show Profile  Reply with Quote
I can't upload the picture. I'm unable to login permanently. Maybe a Win11 problem. I'm upset now and I'll try later again.
Go to Top of Page
Reply #6

ullix

Germany
1107 Posts

Posted - 01/17/2023 :  07:21:19  Show Profile  Reply with Quote
quote:
@Ullix: I tried to upload the bin-file (created with GMC-Data-Viewer) to your blog, but Sourceforge complained that javascript is not installed. But it is and also enabled in Firefox. The same problem with Edge. To be honest: I will investigate that later when I'm back home in some weeks and upload then.
Go to Top of Page

Strange response. Please, let me know what you find out.

Perhaps you can more easily upload to a "Discussion" topic? I tried it out myself, and had no problems. But then I also do not get this js complaint...
Go to Top of Page
Reply #7

SnailsAttack

USA
8 Posts

Posted - 01/17/2023 :  09:20:18  Show Profile  Reply with Quote
oh my god, that's like 15x the normal background. do airliners even have gamma ray shielding?
Go to Top of Page
Reply #8

Bobakman

USA
89 Posts

Posted - 01/17/2023 :  10:06:22  Show Profile  Reply with Quote
Well I researched a bit and I always knew the dose rate was high I never knew it was higher than US Radiation workers of which I was one back in the 1980's interesting data.

Bob

[https://pubmed.ncbi.nlm.nih.gov/36483259/]

[https://pubmed.ncbi.nlm.nih.gov/12862322/]

“If you want to find the secrets of the universe, think in terms of energy, frequency and vibration.”
Nikola Tesla
Go to Top of Page
Reply #9

ullix

Germany
1107 Posts

Posted - 01/18/2023 :  05:31:24  Show Profile  Reply with Quote
quote:
oh my god, that's like 15x the normal background. do airliners even have gamma ray shielding?
Like what, a lead-enforced cabin? Not only unrealistic, but why should they, there is apparently no danger from such radiation exposure.

@Bobackman quoted two important, recent studies on the topic. The first one is a review of all studies till 2021, and I strongly suggest reading it. It is not behind a paywall, so you can download the full text. From the abstract:

quote:
Despite high levels of CIR [Cosmic Ionizing Radiation] exposure and elevated rates of cancer in aircrew, a causal link between CIR and cancer has yet to be established.

Go to Top of Page
Reply #10

Erwin55

Germany
41 Posts

Posted - 01/19/2023 :  03:15:32  Show Profile  Reply with Quote
Hopefully it works now.
Go to Top of Page
Reply #11

SnailsAttack

USA
8 Posts

Posted - 01/19/2023 :  03:48:14  Show Profile  Reply with Quote
quote:
Originally posted by ullixLike what, a lead-enforced cabin?
Well, I suppose whatever they've got on the ISS. I think they use hydrogen-dense plastics.

quote:
Despite high levels of CIR [Cosmic Ionizing Radiation] exposure and elevated rates of cancer in aircrew, a causal link between CIR and cancer has yet to be established.

Elevated rates of cancer in aircrew sure sounds like a causal link to me. It's weird that it only seems to double the risk of skin cancer, though.
Go to Top of Page
Reply #12

ullix

Germany
1107 Posts

Posted - 01/20/2023 :  02:09:22  Show Profile  Reply with Quote
Another beauty, very similar to the first, and including pre- and post-flight Xray. Why post-flight? I did not know they do this.

Would you mind uploading to the GeigerLog site with permission to use?
Hopefully we will also see the return flight.
Go to Top of Page
Reply #13

ullix

Germany
1107 Posts

Posted - 01/20/2023 :  02:23:45  Show Profile  Reply with Quote
quote:
Well, I suppose whatever they've got on the ISS. I think they use hydrogen-dense plastics.

That would not be very helpful. For gamma absorption, which are the ones going into the cabin or the ISS, you either need high Z material, like lead, iron, copper, or you need very thick, like meter-thick walls from the likes of plastic. Would look a bit strange and both options mean "heavy"!

See e.g.: https://www.eichrom.com/wp-content/uploads/2018/02/Gamma-Ray-Attenuation-White-Paper-by-D-M-rev-6-1-002.pdf
HVL is the thickness needed for a radiation reduction by half.

Go to Top of Page
Reply #14

Erwin55

Germany
41 Posts

Posted - 02/01/2023 :  07:14:15  Show Profile  Reply with Quote
quote:
Originally posted by ullix

Another beauty, very similar to the first, and including pre- and post-flight Xray. Why post-flight? I did not know they do this.

Would you mind uploading to the GeigerLog site with permission to use?
Hopefully we will also see the return flight.



Sorry I haven't seen your post so far. I'll upload the bin-file when I'm back home. As I mentioned above, I have some problems here in the hotel to upload to sourceforge. Admin restrictions?
Another issue: I will record the data not CPS but in CPM because 16 hours of recording is very short with respect, that I can't access the counter between airport transfer an comming home.
Go to Top of Page
Reply #15

Erwin55

Germany
41 Posts

Posted - 02/13/2023 :  02:35:19  Show Profile  Reply with Quote
Find all data here:
https://sourceforge.net/p/geigerlog/discussion/general/thread/4865247c42/?limit=25#7ec3
Go to Top of Page
Reply #16

ullix

Germany
1107 Posts

Posted - 02/14/2023 :  01:20:43  Show Profile  Reply with Quote
Truly nice data, thank you! I'll put them as examples into the next GeigerLog release.

And all were done with a GMC-300E+ counter.

One can nicely see the decrease in count rate when going south, and the increase when going north. Although, given that both times the counter was in the luggage compartment, the slight difference between them is a bit puzzling. Different flight altitude?

Go to Top of Page
Reply #17

Ro

2 Posts

Posted - 01/09/2024 :  00:39:42  Show Profile  Reply with Quote
I'm attempting to download my first data file now. It has about 90 hours of flight data for the last month, mostly over the West Pacific on flights between HNL, Guam and Manila. I'm not sure it's going to download though because it's still at 0% after 10 minutes of downloading... Dosimeter read ~135 uSv over that time.
Go to Top of Page
Reply #18

ullix

Germany
1107 Posts

Posted - 01/09/2024 :  02:21:11  Show Profile  Reply with Quote
This route will be new, and a nice complement to other existing routes.

I don't know where you are downloading from and uploading to, but you are always welcome to upload to this place:
https://sourceforge.net/p/geigerlog/discussion/easyuploads/

If anything is too big, consider zipping the file!
Go to Top of Page
Reply #19

EmfDev

2131 Posts

Posted - 01/09/2024 :  12:21:38  Show Profile  Reply with Quote
If you are using the Data Viewer software, check if the address log under the software is updating. If not, you may need to restart the download.
Go to Top of Page
Reply #20

Ro

2 Posts

Posted - 01/09/2024 :  15:00:49  Show Profile  Reply with Quote
There are over a dozen studies to date, ONE showed no increase in cancer rates (who sponsored it? ...). The two main cancers that are associated with flight crews at an increased rate are prostate in men and breast cancer in women. Since ionizing radiation is a factor in both, it doesn't take a leap of faith to conclude the increased radiation exposure is likely a significant factor.

When carrying a tradition dosimeter (from my hospital job) flying about a 2/3 schedule, I exceeded the general public limit of 1 mSV in 4 months -- in about 200 hours of flying East coast to Europe back and forth.

EU pilots (ICAO technically) have some protections and mitigation strategies for exposure. US airlines currently have nothing.


quote:
Originally posted by ullix

quote:
oh my god, that's like 15x the normal background. do airliners even have gamma ray shielding?
Like what, a lead-enforced cabin? Not only unrealistic, but why should they, there is apparently no danger from such radiation exposure.

@Bobackman quoted two important, recent studies on the topic. The first one is a review of all studies till 2021, and I strongly suggest reading it. It is not behind a paywall, so you can download the full text. From the abstract:

quote:
Despite high levels of CIR [Cosmic Ionizing Radiation] exposure and elevated rates of cancer in aircrew, a causal link between CIR and cancer has yet to be established.



Go to Top of Page
  Previous Topic Topic Next Topic  
 New Topic  Reply to Topic
 Printer Friendly
Jump To:
GQ Electronics Technical Support Forum © Copyright since 2011 Go To Top Of Page
Generated in 0.09 sec. Snitz's Forums 2000