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by arctangent 2439 days ago
I don't know for sure but I strongly suspect that Pratchett was heavily influenced by Operation Black Buck: https://en.wikipedia.org/wiki/Operation_Black_Buck

In particular, this diagram from that page makes the process clear: https://en.wikipedia.org/wiki/Operation_Black_Buck#/media/Fi...

Hopefully the name of the original mission is enough to help you find a link to some relevant mathematics :-)

6 comments

This blog post has a great detailed description of Operation Black Buck: https://www.navalgazing.net/Falklands-Part-6
This is great, thank you for sharing!
There is an excellent book about XM607/ Operation black buck written by Rowland White. It’s not just about the actual mission it’s also about retiring the Vulcan then bringing them back and all the other bit that led up to the mission.

http://www.rowlandwhite.com/portfolio-view/vulcan-607/

If you have even a passing interest in aviation then this book is a must read. Very deep, yet incredibly compelling. I kept finding myself on edge...
That diagram is anything but “clear”.
I find it fairly clear.

- each vertical line is the flight of an airplane

- each horizontal/diagonal line is a refueling operation

So, planes take of from Ascension Island at the bottom, only one reaches the Falkland Islands.

Ignoring the gray vertical lines (they are for ‘insurance’, in case other planes would have hit a problem), we have:

- 6 Victors taking of

- 3 of them refueling the other 3 after a short while (presumably because taking of and getting to flight height uses more fuel than steady flight), immediately returning to base afterwards.

- the bomber taking off

- a seventh Victor taking off, refueling the bomber twice, and then returning to base

- one of the 3 Victors of the first wave refuels the bomber twice, then refuels another of the three before returning to base

- that second one refuels the third one and returns to base

Etc.

Here's a bit better diagram: https://i.imgur.com/LZLSlI3.jpg

Of all the aicraft that took off, only one actually flew over the target. It had to be refueled seven times on outbound journey, and the last tanker itself had to be refueled three times to fly that far.

Yeah, OK, wow. That's ... complicated. And I think they didn't manage to get a very good return for all this effort, from a diagonal reading of the article.

Er. Sorry, I'm being thick, but your hint about the link to the relevant maths etc went way over my head. I might be missing a cultural reference? :0

Didn't the British do something similar in the Desert Campaign during WW2, burying supplies to be recovered later. The Long Range Desert Group perhaps?
Reminds me of the rescue of the Thai football team too, where the divers were dropping oxygen tanks further and further in to reach the boys.
I think it rather alludes to caravans and their trade with beduins accross established trade routes