LDM

[@jeromeprater183]

I know the exact history of this item. It was originally purchased from a company called AST Servo in Newark New Jersey in the early 1980's by an associate of mine. AST bought it from a Surplus Government auction most likely in the 1970's. The three Honeywell HIG-4 (Hermetic Integrating Gyroscopes) were developed in the early 1950's by MIT labs near Boston, Massachusetts. Charles S. Draper was the main engineer behind this design and was known as the father of Inertial Guidance. This particular three axis strap-down system was part of a Radio-Inertial Guidance System used in the late 1950's. Look up Titan I Martin Marietta on Wikipedia for more information.

[@ColinDH12345]

The power of the internet! Thanks for the information. Great stuff!

[@MichaelOfRohan]

Bravo 👏

[@bobkeno8959]

Incroyable cette architecture, un vrai système. Quel gain en poids et en complexité d'assemblage avec les techno plus moderne. Rien que le poids de la résine doit être très important. Merci pour cette jolie fenêtre du passé.

[@ThermalWorld_]

Nice teardown.. Lol that's very complex but I'm pretty sure that thing can fit inside a very tiny tiny microchip with todays technology

[@msylvain59]

It was an expensive purchase, but with more money, you get better stuff ! The construction quality of that time generator box is impressive.

[@rowanjones3476]

Somewhat tangentially, speaking of construction quality, a friend worked at a French military contractor that built sonar for submarines. This being 2004-ish he had an Xbox game console and decided to install a mod chip. Not being entirely proficient with a soldering iron he got someone in their hardware department to install it for him. Came back done to a similar spec with wire wrapping. Really wish I’d taken a photo!

[@Spiegelradtransformation]

He is interested in formerly High End Constructions. This was it. Much better than you can. He is more advanced than you can ever.

[@labiadh_chokri]

Nice teardown , it has a serial number of 7 probably they didn't build a lot of items with this complexity , its a 3d labyrinthe with wires and cards ، the system was sealed i think resin was used for mechanical regidity not for protection against moisture.

[@xb1t2mm3ujf2]

It's all beautiful handwork.

[@depleteduraniumcowboy3516]

This really drives home how much and how fast miniaturization has happened.

[@christopherleubner6633]

Yup now they could cram most of it on a single chip and replace the functionality of the system with 3 vibrating structure mems acellerometer chips in a small 2 cm cube.

[@stevenhorii876]

Current inertial measurement units using MEMS gyros and accelerometers can be about a 1-inch (2.5 cm) cube or even smaller. The high-reliability ones are larger and use ring laser or fiber optic gyros. For reference, the Apollo IMU was a one-foot diameter sphere.

[@snowshoe740]

How old is this piece

[@lelabodemichel5162]

65 years old approximately

[@nostromons6325]

Эта штука стоит явно побольше мелких 1000 грина :-)

[@setharp]

This probably cost a LOT when it was new. There are a lot of "Vitamin Q" caps on the boards and those are likely still perfectly good but cost a fortune when it was new.

[@cogoid]

The research and development costs were astronomical -- about 17 billion dollars in today's money just for Titan-I program. I have not seen a detailed breakdown of the costs, but the guidance system is typically a significant contributor. So these units have certainly cost the government at least many millions of dollars each, if all of the expenses are taken into account.

[@christopherleubner6633]

Wow that looks a lot like one out of a bomber carcass I helped dismantle a while back. Had lots of gauges in the cockpit that were painted in radium. 😂

[@justinhealey-htcohio3798]

This really is just fascinating to watch. I'm curious, what kind of potting compound do you think is used on each of those boards? (The amber colored stuff)? Is it hard? Or, some kind of flexible silicone?

[@lelabodemichel5162]

It is soft, a kind of silicone.

[@ThePyrosirys]

Je suis tellement content de ne pas avoir à travailler sur des vieux systèmes comme ça. L'électronique moderne est tellement plus compréhensible même si elle est techniquement plus complexe.

[@chefchaudard3580]

Le gros problème ici, c’est d’accéder aux différents composants. Ça été étudié pour être « compact » (pour l’époque…), pas accessible. L’avantage de l’électronique moderne, c’est qu’on n’a plus ces potentiomètres de réglage, qui demandaient un temps fou pour la calibration (surtout qu’un potentiomètre pouvait en affecter un autre et qu’il fallait parfois revenir plusieurs fois sur les mêmes). Après, une fois qu’on a assimilé le synoptique, chaque module rempli une fonction simple, à l’époque : c’est relativement simple à réparer, d’autant plus qu’on a trois fois le même circuit, pour chaque gyroscope. Aujourd’hui, les auto tests aident à trouver la panne… mais parfois se trompent et la… c’est le drame! 😂 On peut passer un temps fou à trouver la cause du défaut, qui n’a aucun rapport visible avec les symptômes.

[@chuckh.2227]

Very interesting!

[@bthjf12003]

Imagine service this back then

[@beamer.electronics]

Fascinating, thank you.

[@tabeschektabeschek1852]

Wow, that was really high tech at that time. What is inside of the giro tube? Great video, thanks!

[@0MoTheG]

8:00 Half an inch of resin, wow.

[@super-8]

Looks Like an Analog Computer. To Control an IR Tracking taktile Gun ?

[@alainbibi0047]

Salut, l'industrie aéronautique un cauchemar pour ceux qui produisent les pièces et l'environnement :*|

[@boostin99]

Mais où est-ce que tu trouves ces merveilles !?! Super vidéo Michel !

[@samsmith9764]

thanks for another great video :)

[@lookylook570]

No parts harvesting from those boards….

[@ostrov11]

... как буд-то русские делали.

[@МихаилПрохоров-ь2е]

Русские на лампах делали в те времена.

[@ostrov11]

@@МихаилПрохоров-ь2е ... чуб поправь.

[@МихаилПрохоров-ь2е]

@@ostrov11 кому?

[@МихаилПрохоров-ь2е]

@@ostrov11 хочешь сказать что в те годы мы на транзисторах что то делали?

[@user-folk1987]

Так было у кого скопировать😂

[@thesvalker3720]

Шоколадный торт с орехами

[@UQRXD]

Blast from the past.

[@Spiegelradtransformation]

Ten 👍👍 aus Deutschland.

[@ChipGuy]

Looking forward to the next part...

[@aleksandargurzan]

Уметност

[@АндрійКомар-ю9т]

👍👍👍👍👍👍👍👍👍👍👍👍

[@paulmackenzie5526]

Thank you !!

[@TVOrientalTelesofiabartolomeu]

Qual o ano de fabricação

[@lelabodemichel5162]

One gyro is dated 1963, some capacitors 1958

[@TVOrientalTelesofiabartolomeu]

@@lelabodemichel5162 muito obrigado pela resposta. Essa tecnologia era incrível

[@enriquegonzalez2802]

$1000 just for see it inside?