What is a Garrison dido? (mentioned in a sci-fi book)?

Question

I finished reading The Moon is a Harsh Mistress today, and I noticed that Garrison didoes are mentioned. What is a Garrison dido? Is it a term from astronautics, or is it something Heinlein made up?

Here's the relevant quote:

"He answered so calmly that I steadied down. "Farside approach, Man; I'm blind back there. They came in on tight Garrison didoes, skimming the peaks; I barely saw the chop-off for Luna City. The ship at J-City is the only one I can see; the other landings I conclusively infer from the ballistics shown by blip tracks."

Answer 1

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DIDO stands for "dive in dive out", which is presently best known as the name of a singer.

Peter Garrison is an American journalist and amateur aircraft designer/builder.

Putting these bits of data together, I surmise that a dido may be a flying maneuver, and perhaps Peter Garrison pioneered his own particular version of the dido.

My web search failed to confirm this conclusion.

Source(s): http://www.acronymfinder.com/DIDO.html http://www.google.com/search?hl=en&rls=com.microso... http://en.wikipedia.org/wiki/Dido_(singer) http://articles.latimes.com/2009/oct/28/opinion/oe...

Answer 2

Its obviously some sort of fictiona futuristic vehicle that is in the fictional universe in the book!