Author Topic: Widnall on Apollo's guidance, navigation, and control  (Read 886 times)

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Offline Homer J Simpson

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Widnall on Apollo's guidance, navigation, and control
« on: October 16, 2016, 04:01:10 pm »

 
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Offline chris_leyson

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Re: Widnall on Apollo's guidance, navigation, and control
« Reply #1 on: October 16, 2016, 05:37:25 pm »
Thanks Homer J, you just got to love maths, it's universal :-+ There was a lot I couldn't follow because I just try to do the math for electronics engineering or signal processing and that is hard enough, totally different control problem in three dimensions. Interesting lecture on control theory, I didn't know that the Russians had developed bang bang control theory back in the day, it works but is it ever taught these days, triple integrals in analogue control loops are just asking for problems, two are bad enough but three !! But hey they managed to fix it with double precision fixed point maths at 5 samples per second it's DSP history and should be written up in a book. Rant over. Nice video thanks Homer J.
 

Offline Homer J Simpson

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Re: Widnall on Apollo's guidance, navigation, and control
« Reply #2 on: October 16, 2016, 05:44:42 pm »
Just think. Yes the did use early computers for simulations and such but most of this was a pencil, paper and a slide rule.

Totally amazing.

« Last Edit: October 16, 2016, 05:53:09 pm by Homer J Simpson »
 


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