LDM

[@0MoTheG]

Taking pictures and writing into them is great. I always had the issue of naming components in the device.

[@SRD-Ukraine]

Дякую Вам! Я також маю відео по цьому датчику,але я не аналітик. Було цікаво!❤

[@Alexestpersonne]

Génial, j'ai beacoup apprécié la vidéo. Je ne connaissais pas ce type d'accéleromètre. Il fonctionne sur un seul axe si j'ai bien compris.

[@АлександрСветлый-х1я]

Хорошие репарации

[@pidbip6510]

Awesome. Thank you for reverse engineering this device.

Thank you for sharing

[@AlexAlex-ll5sz]

7:10 по сути схема как у дискиминатора детектора ЧМ сигнала.

[@currawong60911368]

Looks like something out of a 1980's Honda...

[@TURBOSLAYERPWNZ]

починил - теперь можно ставить назад в ракету)

[@artip777]

That's washing machine part! Not for rockets!

[@rzhevsky4934]

​@@artip777😁😁😁

[@КонстантинЛетов-у6р]

и обратно туда откуда прилетело)

[@ivekuukkeli2156]

The fault is located. It can be sold back with receipt for the work done.

[@AlexAlex-ll5sz]

13:38 его надо испытывать на центрифуге.

[@timati78rus]

УД6Б is top side marking for 140УД6Б. OP amp.

[@wouterke9871]

Abracadabra to me, but fascinating skills

[@xb1t2mm3ujf2]

Russian electronics is at least 40 years behind.

[@ivekuukkeli2156]

Excellent presentation with reverse engineering. To me it sounds like you can design also this equipment better than the Russians. The pivoting masses with balance points is shown in clear still picture, very important point because the manufacturing / serial codes can be read. The same still picture for 10 seconds showing codes / numbers would be very usefull for all other parts like integrated circuits and marking on the boards. Some viewers could reveal more details from those cides / numbers; like manufacturing year ... month .. factory ... etc.

[@olegdvd]

DLUMM-30 microminiature 😂 linear acceleration sensor.

[@paveltube80]

Hello🎉

[@tariqsingh3747]

How do you think this compares to modern MEMS devices that are something like 3x3mm with 6 axis accelerometer+gyro?

[@cogoid]

Different types of accelerometers have radically different performance. The ubiquitous inexpensive MEMS devices are not very accurate. This device is broadly comparable to them, but it is half a century older design. The best accelerometers (both US and Russian made) use the same magnetic servo principle as we see in this device, but with tons of subtle refinements, in order to obtain vastly greater performance. They are all roughly similar in size to this one and are very expensive.

[@drhdirutomich2458]

помехоустойчивость!

[@oriondark3282]

"Modern MEMS device" most likely won't survive flight accelerations and vibrations. :-) Plus, those are definitely not designed to sense the mentioned acceleration ranges.

[@cogoid]

@@oriondark3282 What you have said is more or less the opposite of reality. Inertial navigation systems built into the artillery shells rely specifically on MEMS devices. Even the garden variety consumer device, MPU-6000 is specified to survive 10000 g of shock, which is easily a hundred times more than the limit for this mechanical device.

[@oriondark3282]

​ @cogoid I don't deny that such parts do exist. In the end, if there were radio bulbs capable of withstanding the launch acceleration, then why the sold-state electronics wouldn't? All I'm doubting is that the regular off-the-shelf components dedicated to customer or industrial applications will. About the part you mentioned. Its datasheet does specify that it withstands the 10000G @ 0.2ms shock. It is in the "Board Mechanical Shock" test category, and I'm quite sure it has nothing in common with the conditions of the firing shell. Let's perform a little "back of the envelope" calculation and obtain the terminal speed of the shell being accelerated at 10000G during 0.2 milliseconds. The final speed of an object uniformly accelerated during time t is described by the following formula: v = u + at, where u - initial speed (0 for the shell); a - acceleration (10000 m/s^2); t - acceleration time (0.0002 s); Hence, the final speed of the shell will be: v = 0 + 10000 * 0.0002; v = 2 m/s; Just 2 meters per second, within specified limitations. Now let's reverse the task and calculate the time required to accelerate the shell to 1000 m/s: t = (v - u) / a; t = 1000 / 10000; t = 0.1 s This is 0.1 / 0.0002 = 500 times longer, than test conditions. Of course, it is a very crude evaluation. The acceleration profile in the barrel is not uniform. The final velocity may be smaller. After all, there might be a missile instead of a shell. But anyway, there are reasons why there are military-grade solutions, and why sometimes they are not so compact, like ones in the customer devices.

[@nanev1976]

Can somebody compare precision of the mechanical accelerometers, compared to MEMS?

[@chefchaudard3580]

for the precision, I think the issue is in the friction on the axes. The mass does not move until the force overcomes the friction. Or stops when force equals friction. The position of the mass depends not only on the acceleration, but also on the friction, which is not a constant. There is no friction in MEMs. And, considering the weight of the masses, it has much more inertia and so much slower reaction. I would say that, overall, this design is inferior.

[@0MoTheG]

​@@chefchaudard3580 The inertia argument makes no sense.

[@chefchaudard3580]

@@0MoTheG maybe you are not familiar with the notions of inertia, frequency response and resonant frequency. Have a look to that before you comment.

[@meotyda]

В ракєтах контакти зароблені з паладію або платини, і в конденсаторах теж драгметалл є. Можна отримати рублів 500 з одного іздєлія й добряче похмелитися. Росіяни, записуйте й застосовуйте на практиці!

[@marcoaurelio4903]

i would pay R$100 for that cool trash, just put a listing on mercado livre

[@АрикКаспаров]

Поэтому у вас своих ракет нет, только "партнёрские". Свои за горилку сдали)

[@КонстантинЛетов-у6р]

@@АрикКаспаров Да нет , доверились вам как соседу другу, а вы так подло поступили. Даже маркировка деталей 12-14 года предполагает что ваше государство готовилось к войне заранее.

[@AlexAlex-ll5sz]

Кто о чем а укры об воровстве и продажничестве. Даже знает где чего и сколько в этом приборчике.

[@КонстантинЛетов-у6р]

@@AlexAlex-ll5sz Ты наверное своих радиогубителей не видел, которые редкие приборы разроют ради позолоченой ламельки. Таких каналов валом, пример необразованость и отсталость ума .Прибор сам на порядок дороже тех элементов что в нём. Но никому он не нужен, так как никто уже с молодёжи не паяет и ничего не делает толкового своими руками. "Укры" то тут при чём, тряску убери.

[@ljubomirculibrk4097]

Kh-31, antiradiation version?

[@SRD-Ukraine]

Бук м1

[@rzhevsky4934]

4:26 2Д102 or 2Д103 diodes

[@44Nemo44]

Это вам, не это... 😊

[@user-Human-777]

Development stopped in the 80s

[@cogoid]

This is a legacy device which goes into a missile developed in 1990s. The fact that it is still in production is interesting, but it would be a mistake to take this device as representative of the full spectrum of accelerometers available in Russia -- there are literally hundreds of other types of devices in production.

[@TheCaitlinlopez]

More like 1970

[@sakhmex]

а ты не думал что с начала опустошают старые склады 🤣 и все эти изделия рабочие и нашли свои цели

[@АнтонРябошапко-г3г]

​@@sakhmex Склады опустошили и сдали в скупку краденого уже давно

[@sakhmex]

@@АнтонРябошапко-г3г про опустошённые склады у хохлов спроси куда их сдали им на головы😁

[@Smailov_Timur]

чтооо? не разобраться как устроено??? хахахахах

[@КонстантинЛетов-у6р]

Кто такое сказал?

[@AlexAlex-ll5sz]

4:59 удивительно плата в 3 слоя в спичечном коробке. Я в детстве разбирал военную электронику СССР, но по сей день удивляюсь какая мы была тогда мощная страна, еслиб не предатели во главе со слабоумным горбачевым все было бы хорошо.

[@АннаЗегерс-ъ9к]

УСЕГДА ЯКЩО ДО ГОРБИ И 'ЯНЫКОВ' СТРАНY КУДА ТО ТОЛКАЮТ. НЕ ОТСÏДЕТИСЯ.

[@Dima_666]

мощная страна и слабоумный Горбачёв во главе - как то не клеиться ваша теория

[@AlexAlex-ll5sz]

​@@Dima_666все клеется. Есть сильные но глупые или умственно больные люди. Так и государства типо СССР или сегодняшние США

[@КонстантинЛетов-у6р]

На военку тратились сумашедшие деньги и ресурсы. Но народ стоял в очередях за молоком и смотрел на пустые прилавки. И даже та военка была отсталая сравнивая с западом, где уже чипы и процесоры с 70-х годов применялись, тогда как в совке лампы были ещё на ходу)