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A comment on SR-71 Blackbird Astro-Nav System (a.k.a. R2-D2) worked by tracking the stars. Parent comment

Re:SR-71 Blackbird Astro-Nav System (a.k.a. R2-D2) worked by... by jollyllama on Tuesday September 26, 2023 @09:38AM (#37659128)
The DEF-H module contains the Diesel Exhaust Fluid for the truck.
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Re:SR-71 Blackbird Astro-Nav System (a.k.a. R2-D2) worked by... by libertyhouse on Tuesday September 26, 2023 @10:02AM (#37659456)
Not sure you are were trying to be serious or not, but the DEF-H was one of the defensive systems used to jam surface to air threats. The system had two "modules" with one in the left and one in the right chine.
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