B-52 Bomber Astro Tracker - Part 2: Power up and gyro-stabilization
We reverse engineer this insanely complicated masterpiece of cold war engineering, and manage to gyro-stabilize it.
B-52 Astrotracker Part 1: • B-52 Bomber Astro Tracker - Part 1: Grand ...
Previous video on synchros: • Bendix Air Data Computer - Part 3: Intro t...
Ken's article on servomotor generators: https://www.righto.com/2024/02/bendix...
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EEVblog #854: • EEVblog #854 - B52 Bomber Automatic Astro ...
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00:00 Recap of the previous episode
01:23 It uses synchros
01:56 Looking at the telescope optics
02:35 Explanation of the astrotracker innards
07:29 Reverse engineering
10:17 Test stand
11:01 Building the roll axis servo loop
12:38 Synchro servo loop explanation
15:01 First roll axis test, it's unstable
16:33 Adding tachometer feedback, still not right
18:18 Michel gets it to work
19:21 Building the yaw axis servo
20:13 Dephasing cap explanation
22:04 Both axes working!
23:26 Spinning up the vertical gyro
26:15 The astrotracker is gyro-stabilized!