LDM

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LDM

Рет қаралды 17,118

Le labo de Michel

Күн бұрын

Пікірлер: 25

@douro20 2 жыл бұрын

Thermal batteries typically contain a solid electrolyte consisting of a eutectic mixture of alkali metal chlorides which is made molten by a small pyrotechnic heat source. They can have a shelf life of twenty to thirty years or more. Typical output voltage is between 10 and 40 volts but some can produce several hundred volts.

@klam77 8 ай бұрын

and VERY expensive!

@fredmitchel1236 7 ай бұрын

And say you had a 40 VDC thermal battery. So how much current can it put out at 40 VDC and for how long?

@klam77 7 ай бұрын

@@fredmitchel1236 google "EAP-12359%200223.pdf" It's a strange spec; it's only spec'd in terms of current spikes at the given voltage, not continuous current if i understand it correctly; something like "12.3 A 100 ms pulse at 1.5 sec" A large current but only ON for 100ms with 1.5 sec resting time......

@kingrutse3278 2 ай бұрын

Thanks i they some how converted the heat from the explosion lol Like the lil electrical cooling pads (pelter modules ) or something excuse me self taught lol

@oakspines7171 7 ай бұрын

Oh the Eureka vacuum cleaner. I still have it running after a very long time. Thanks for the video.

@fredmitchel1236 7 ай бұрын

Cool...I never thought I ever seen the inside of a TOW missle

@yelectric1893 10 ай бұрын

I wonder how this compares to the konkurs. Specifically, the batteries used. I think this gyroscope is an improvement in terms of sheer size. The approach is interesting, thanks for sharing.

@Engineer_Stepanov 2 жыл бұрын

Очень познавательно. Спасибо.

@user-vu7rg5pr7u 2 жыл бұрын

Merveilleux! Je pensais que les fusées filaires n'avaient pas besoin d'un gyroscope.

@lelabodemichel5162 2 жыл бұрын

Au moins le roulis est stabilisé, je pense à cause de la liaison filaire.

@ms24444 2 жыл бұрын

Very cool!

@user-di2mf2fn7n Жыл бұрын

Professeur, veuillez expliquer à nouveau les pôles des deux batteries thermiques, suivis du missile, en détail, les dangers de la recharge et de l'activation, les tensions, la sortie😘😙😗✊👏👏

@saadtiwana 2 жыл бұрын

Nice. Do you also have the steering motors for this? I'm curious what type of motors are used to steer the fins

@lelabodemichel5162 2 жыл бұрын

Unfortunately I don’t have the rear assembly. The fins are driven using a bottle of compressed helium, some kind of electro-valves are used for that.

@ThermalWorld_ 2 жыл бұрын

@@lelabodemichel5162 Interesting

@font8a 2 жыл бұрын

How does the compressed nitrogen spin the gyro?

@font8a 2 жыл бұрын

I guess the nitrogen only has to get the rotor spinning for a short time rather then power it continuously

@lelabodemichel5162 2 жыл бұрын

The compressed nitrogen is fed to the gyro using the pipe one can see at 06:16. At the beginning the gyro is orientated such that the rotor can rotate with the pressurized nitrogen fed to it. We can see at 06:25 the shaft of the rotor aligned with the hole. I think that at the beginning the shaft is linked to something inside the hole which rotates with the pressure. According to a document I found the gyro is liberated when the speed of 42000 rpm is achieved, after that the rotor continues to rotate freely during the flight of the missile.

@font8a 2 жыл бұрын

@@lelabodemichel5162 lots of things happening quickly when they pull that trigger!

@blacklisted4885 Жыл бұрын

Isnt this classified? 😅 If there is a charge required to batteries, why aren't they called capacitors

@lelabodemichel5162 Жыл бұрын

A charge is required to activate the heat pellets inside the battery to ignitiate the battery. The heat produced is converted in electric power. A thermal battery is one time use.

@christopherleubner6633 8 ай бұрын

Minimum charge required to fire the ignition squib. The heater charge is an aluminum silicide termite that melts the salt mixture inside. The cathode is generally made of a magnesium alloy, the anode is made of graphite combined with copper oxide or iron oxide.