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ORAC
10th Oct 2023, 05:47
Very, very geeky book.


https://cimg3.ibsrv.net/gimg/pprune.org-vbulletin/2000x870/image_c57ec7d381bf57932aa45e184af3788e9709a980.jpeg


​​​​​​​https://x.com/calumdouglas1/status/1321749626127613953?s=61&t=rmEeUn68HhlFHGKbTPQr_A


My WW2 Fighter Engines book is now available from the publisher.

"I challenge anyone to read this book without cheering the triumphs or feeling compassion for those struggling against impossible odds."

- James Allison, Technical Director Mercedes F1.

https://x.com/calumdouglas1/status/1711120003678851176?s=61&t=rmEeUn68HhlFHGKbTPQr_A


Later in WW2 the Germans (after a year of disaster) improved their aero engines by Chrome plating their valves. This used very little Chrome, but was a very intensive process for an application like a valve with about 27 operations per valve….

​​​​​​​https://x.com/calumdouglas1/status/1711342010974502983?s=61&t=rmEeUn68HhlFHGKbTPQr_A


This is fascinating. How did you learn this?

​​​​​​​https://x.com/calumdouglas1/status/1711342010974502983?s=61&t=rmEeUn68HhlFHGKbTPQr_A


A fair question, the answer is because I was the first person to totally digitize the entire surviving German Air Ministry stenographic meeting records from Microfilm.

So I could scan through about 15 million words digitally and so find all the important meetings regarding these issues, which had been impractical for any researchers/authors of the past to find using manual microfilm readers with 35mm reels of film.

With which it takes a day to look over even 5% of one just one reel of frames.

I found one meeting randomly talking about "valves" so I did a keyword search for "valves" and looked at the search window filling with results, and thought "wow, ok, I`ve found something!"

vne165
10th Oct 2023, 05:50
Yes - have a copy and have gifted several.
It's terrific.

ORAC
10th Oct 2023, 05:51
https://x.com/calumdouglas1/status/1711338837408903362?s=61&t=rmEeUn68HhlFHGKbTPQr_A


Hi Calum, as a chemist I've always been really interested in better understanding the german fuel spec, how it was different and why. Is there anything you could point me towards on this?

Fuel chemisty is a big area, my book contains a lot on this (I drafted in help from a fuels chemist in Germany when I wrote it).

However the 10 second answer to the rough differences in composition is >

https://cimg3.ibsrv.net/gimg/pprune.org-vbulletin/1213x802/image_7c17d334c7517f7c92a9a09ffff7782eb8f7bf10.png

ORAC
27th Oct 2023, 11:23
Contains links to his YouTube videos…

https://x.com/calumdouglas1/status/1717659105781846186?s=61&t=rmEeUn68HhlFHGKbTPQr_A
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