Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

Blackbird SR-71 Flight Manual (2010)

sr-71.org

Post reply on HN
Print view View original

151–156 of 156 posts

Re: Blackbird SR-71 Flight Manual (2010)

#151

Post by Archsys »

EForEndeavour wrote: post #75
Archsys wrote: post #48

Earlier quoted context omitted.

Laughter is provoked by a discontinuation of what your brain expects. If you saw a dog walking a man on all fours, you would most likely laugh, because of the unexpectedness. In this case, the unexpected terseness causes laughter. You don't expect what follows to just be "Eject". In a technical context like a manual, you expect what follows to be a detailed list of steps and instructions. When this expectation is sha…

Speaking of humour, I can't tell what I find funnier: the fact that someone didn't see how these checklist items could possibly be construed as humorous, or your clinically precise explanation of the concept of humour itself, complete with a mechanistic explanation and example. Together, they're a beautiful example of the tone of HN.

Thank you. This is my first time on HN actually, and I was captivated by the same tone you speak of. Are you interested in chess?

Re: Blackbird SR-71 Flight Manual (2010)

#153

Post by skwog »

rangibaby wrote: post #117
souprock wrote: post #107

Earlier quoted context omitted.

Because it is a helicopter? Ejection seats have been done for those. Explosive bolts release the blades, and then everything proceeds as normal. Here is one such helicopter: https://en.wikipedia.org/wiki/Kamov_Ka-50

I believe that was literally the first helicopter with working ejection and is newer than the grandparent’s example (Apache)

AH-1Z Viper, a successor to the SuperCobra, which succeeded the original Cobra from the late 60's.

Apache is very different machine.

Re: Blackbird SR-71 Flight Manual (2010)

#154

Post by aoki »

cladari wrote: post #115
kryogen1c wrote: post #71

Earlier quoted context omitted.

Nuclear propulsion manuals for the U.S. navy have similar wordings. >By order of the commanding officer [actually a highranking person on carriers, compared to little ships where COs can be realtively junior and low ranking], this reactor limit may be ignored during tactical situations. Legend has it that every CO (3, i think i heard) to invoke "when tactical" exceptions have been fired in the following review. The o…

I'm remembering back 40 years here. I worked in the engine room of a nuclear powered cruiser. We had a switch called something like "battle bypass" that would bypass all the auto scram functions. The military calls a shutdown scram while the commercial industry calls it trip. We had a captain rank captain and I believe all nuclear powered vessels had one.

“battle short”

Re: Blackbird SR-71 Flight Manual (2010)

#155

Post by rangibaby »

skwog wrote: post #153
rangibaby wrote: post #117

Earlier quoted context omitted.

I believe that was literally the first helicopter with working ejection and is newer than the grandparent’s example (Apache)

AH-1Z Viper, a successor to the SuperCobra, which succeeded the original Cobra from the late 60's. Apache is very different machine.

That proves my point even more if the Cobra is even older. I imagine it would be extremely expensive to add an ejection system to a helicopter that wasn’t initially designed for it.
Post reply on HN