9mo ago

Slide Rule

I gotta post something, so I'll post the mechanical calculator that the flight school wanted me to get. How it works is that you can set ratios in the dial and multiply them. In this picture, it's 60:10 (or 60:1.0) so I can take any number from the inner circle in minutes and find out how many hours that is equal to on the outer circle.

There are also other things on this calculator, including a wind vector calculator, and charts. Most pilots don't use these anymore, but they still wanted me to know how to use one

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Not just ANY calculator. But something that will literally save your life when the electrics on the plane are blown and you need to get to that little airport via dead reckoning.
- I wonder if we’ve semi automated some way to make arbitrary slide rules. Like some kind of software that you punch your functions into, or some table of info to be interpolated, and it lines everything up.
  
  I wonder if we’ve semi automated some way to make arbitrary slide rules.
  This is how a lot of maths is already done by computers. For example, it's basically impossible to get a computer to do an integral of an arbitrary function, but there are a lot of methods to approximate the answers. And that's mostly by using "slide rule" methods of approximately getting the right answer. The computer just does it fast with smaller intervals than you'd do manually.
Flight computer
Can it run doom?? :)
- It can plot a course for Mount Doom
Hey.... do yourself a favor and get a CX-3 flight computer. They're allowed on the written. Don't worry, you can thank me later 😜
- Professor Staecker?
  
  I'm sorry, I'm either not that person or don't get the reference
- It's in my to do list to buy
I hate these things with a passion. When I did flight school my instructor made me use one nonstop. I've never used it since but I still being it as a backup
And you will never use it again after your ppl. Thank god!
- For every useless thing I learned in college, it at least had a decent reason to be in the curriculum, whether because it provided historical context to what I actually work with or because it provided a strong mental model to understand what the programs that automagically do the work for you are actually doing behind the scenes which is invaluable when troubleshooting edgecases and failures
  
  In my experience, this is one of the devices that only creates more confusion in what already is a high stress environement. I get what you are saying, but i doubt there is a single pilot under the age of 60 that would ever use this device willingly. The heirarchy anymore is the in suite avionics, then secondary instruments, then Ipad, then, asking for vectors.
  Its like an abacus. Theres just very little use for it anymore. And maintaining proficiency is only for the test.
I freaking love mechanical calculators!
That's the same one I have, even here in Australia.
Awesome piece of kit
I have the same one. Still useful for density altitude, TAS, and time distance calculations. I still use it after all these years. Not the wind chart though. Fuck that noise!

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