You might think a book entitled "Digital Apollo" would be about the development, programming and operation of the digital computers in the Apollo Command (CM) and Lunar (LM) Modules. You would be partially right. About half of Dr. David Mindell's superb volume covers those subjects, very readably and in great detail. But the book's scope is far broader than that. It is really nothing less than a comprehensive examination of the relationships between humans and machines from the earliest days of aviation, through the X-15, Mercury, Gemini, Apollo and Space Shuttle eras, and into the future of spaceflight.
It's a fascinating story that has not, to my knowledge, previously been told in any depth. The evolution of the Apollo computer hardware and software occurred in parallel with the evolution of the attitudes of steely eyed NASA astronauts, who fought hard to avoid relinquishing any control to machines. All the early astronauts were test pilots--their hard-won experiences with primitive vacuum-tube systems in aircraft had convinced them that "electronics always fail." Thus they opposed NASA's decision, mandated by the complexity of lunar missions, to depend largely on new-fangled transistorized digital computers to help them fly the Apollo spacecraft. At one time, in those days before "fly-by-wire" control systems, some Apollo astronauts wanted actual cables connecting a conventional aircraft-type stick with the CM's attitude control rocket motors. That didn't happen. They feared that computer failures would jeopardize their missions and perhaps cost them their lives. That also didn't happen. To find out what DID happen, there's no better source than "Digital Apollo."
Dr. Mindell says his book "...tells the story of the relationship between human and machine in the Apollo project and how that relationship shaped the experience and the technology of flying to the moon. It is a story of human pilots, of automated systems, and of the two working together to achieve the ultimate in flight. It is also a story of public imagery, professional identities and social relationships among engineers, pilots, flight controllers and many others, each with their own visions of spaceflight." That's a good summary, but I'd like to add to it. First, words like "social relationships" and "working together" and "visions" should not deter technophiles from reading "Digital Apollo." Those subjects are all in there, but much of the book is at the down-and-dirty technical level of bits and bytes and magnetic core memories and DSKYs and other esoterica. Dr. Mindell superbly integrates the human and computer stories in a way that almost anyone should find interesting. Second, "Digital Apollo" is one of the best-written spaceflight books I've read in years. Its tone is brisk and conversational, but the information it contains is deep, broad and very well-explained. You don't have to be a space cadet to enjoy it. It is also exceptionally accurate. I came across only a few minor errors in the parts of the story that I know, such as calling a metal alloy used in the X-15 "Iconel-X" rather than "Inconel-X" (the alloy and the name came from the International Nickel Company, hence "Inco").
"Digital Apollo" fills a niche in the history of technology and spaceflight in a most outstanding way. It reminds me a little of Tracy Kidder's "The Soul of A New Machine," and that is high praise indeed. Even if you think you know Apollo, you should read it. You're sure to learn a lot, and be entertained in the process. I recommend it most highly.
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Reviewed in the United States on February 5, 2011
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Top reviews from other countries
Eduardo Henrique dos Santos
Excelente leitura
Reviewed in Brazil on November 10, 2021Andy
Very good book, exactly what I was looking for
Reviewed in France on March 8, 2024Amazon Customer
Good book that covers all aspects of the Apollo missions
Reviewed in the United Kingdom on March 1, 2021
