For the Russian special forces developed two-medium breathing apparatus

Servicemen of the Special Operations Forces Command (FSS) will receive dual secondary breathing apparatus - DA-21Mk2D rebreathers, according to News with reference to a military source.

According to the source, the device, developed by St. Petersburg State Maritime Technical University in conjunction with the Ryazan Airborne School, "weighs just over 10 kg, allows you to breathe oxygen for four hours and works at temperatures from –2 degrees to + 30”. It can be used at altitudes up to 10 thousand meters when making long jumps, as well as under water at a depth of up to 20 meters.

“The tests of YES-21Mk2D are planned to be held next summer in Crimea on the basis of the training center of the Special Operations Forces. At present, the respiratory system is undergoing underwater tests, which are scheduled to be completed at the end of this year - the beginning of next year. After that, the system will be tested directly at an altitude of 10 thousand meters. And already in the Crimea “kssoshniki” will check the system in a complex, having performed long parachute jumps into the water ”, - said the source.

YES-21Mk2D - closed type apparatus. “That is, it does not emit gas into the external environment so that bubbles will not form, which will unmask the combat swimmer. The air exhaled by the diver passes through a special cartridge with calcium hydroxide, which absorbs carbon dioxide, after which the remaining compound is enriched with oxygen, ”explained the representative of the military department.

Alexei Blinkov, Head of the Department of Defense Research and Development: “A two-medium breathing system was created on the basis of the DA-21Mk2 complex, which is already in service with the Russian Navy. In the version that received the prefix "D" - "landed", the device was heavily modified. In particular, according to the requirements of the military, the mount was transferred to the chest so that the paratrooper could carry a breathing apparatus along with a parachute backpack. The device has been lightened more than twice - from 21 to 10 kg due to the use of composite materials and the refusal to supply the nitrogen-oxygen mixture in favor of ordinary oxygen. Special forces soldiers perform tasks underwater at a depth of 20 m, and therefore, after consulting with the military, we decided to abandon the nitrogen-oxygen mixture, which is not suitable for breathing at high altitude. ”

Comments

[svp67]

That is, from the sky to the depths and all in one gear ... okay. The main thing that would work.

[sub307]

"The main thing is that it would work."
Why shouldn't he work? The product was not created from "scratch" ..., on the basis of the same, already tested "amphora"
They will pass complex in the Crimea ... and into service, to the "joy" of "sworn friends" or whatever ...? ... "partners" chtoli.

[Kolobochok]

So it looks like "Amphora". Only our cylinders

[lelikas]

I liked the phrase "STRONGLY REFINED" more - changing the cylinder to a composite one and transferring the mounts is within the power of any workshop in a few hours.
And ours, after the ringing from Shoigu, it took only half a year.

[Dryuya2]

Quote: from article

The device was more than twice lightened - from 21 to 10 kg due to the use of composite materials

I remembered something about composite materials

[sub307]

"Only our cylinders"
Kolobochka, "ours" are what?
"... a unique two-medium respiratory system was created on the basis of the DA-21Mk2 complex, which is already in service with the Russian Navy.
- In the version that received the prefix "D" - "landing", the device has been greatly improved - says Blinkov. - In particular, according to the requirements of the military, the mount was moved to the chest so that the paratrooper could carry the breathing apparatus along with the parachute pack. The apparatus was lightened more than twice - from 21 to 10 kg due to the use of composite materials and the refusal to supply a nitrogen-oxygen mixture in favor of ordinary oxygen. Special forces fighters perform tasks under water at a depth of up to 20 m, and therefore, after consulting with the military, we decided to abandon the nitrogen-oxygen mixture, which is not suitable for breathing at high altitudes. "
So that the cylinders are all the same ..., the changes are described above.
http://www.i-mash.ru/news/nov_otrasl/84883-bojjcy
-specoperacijj-poluchat-unikalnye-rebrizery.html

[Kolobochok]

The picture shows the French "Amphora". What is written about in the article has nothing to do with this device.

[dmi.pris1]

A very useful thing for the landing "ichthyandra" special forces ..

[Rav075]

And at an altitude of 10 km the temperature is definitely not -2 C.

[rotmistr60]

So they won’t jump from 10 km, but from 3-5, depending on the task at hand, just right.

[Andrey591]

10.000 meters temperature is -50 degrees Celsius.

[Barakuda]

Minus 40-50 about ...

[Ka-52]

Such a temperature difference seemed strange to me, too.
Either zhurnalyugi as always messed up something, or we don’t know something)). Tests will show.

[Petrovich1952]

It’s interesting, but do the adversaries have this? If not, then why do we need advertising to let them have a surprise.

[Pulya]

Quote: Petrovich1952

It’s interesting, but do the adversaries have this? If not, then why do we need advertising to let them have a surprise.

The adversary also stole this technology :)
When the reconnaissance plane shot down the United States, it was discovered that the pilot was breathing in just such an apparatus.

[netmag]

How cleverly of our designers you made fools. And when they shot it down? In the year 1935? It’s just that already in 1935 the RKR-2 insulating oxygen respirator was used for mountain rescue operations.
https://upload.wikimedia.org/wikipedia/commons/0/
06 / Isolating_respirator_RKR-2_1935.pdf

He has the same scheme: an oxygen cylinder, a breathing bag with a pulmonary machine gun, a cartridge with a regenerating substance.

[Pulya]

Firefighters have been using the Urals since the 80s. The same trailer. Composite added and all the innovation? ??
Straight breakthrough izobreteniya ?? !!!!

[Mama_Cholli]

Oxygen is harmful at high absolute concentrations, that is, not only the percentage, but also the pressure of the gas mixture is important.
The oxygen content in the atmosphere is about 20%, therefore, the partial pressure (contribution to the total atmosphere pressure) is 0,2 bar. If you breathe pure oxygen, then the partial pressure will be 1 atm, and this is the first phase of oxygen poisoning (pulmonary hyperoxia).
At high pressures (at depth), oxygen becomes poison.

[sir_obs]

In atmospheric air, up to 30 meirs are allowed to dive, at 60 oxygen is completely eliminated from the respiratory mixture.
For submariners, such a device has been used since 59. You can breathe in it for 4 and a half hours at normal pressure or 20 minutes at a depth of 100m.
Two cylinders, one with air, the other with a nitrogen-helium-oxygen mixture, plus a regenerative cartridge for cleaning a closed loop.

[Mama_Cholli]

I know. But the article talks about oxygen, and not about the mixture and not about air.

[netmag]

On oxygen, you can go down to a depth of 20 meters.

[Mister22408]

And not everyone can stand it.

[a71]

60 meters excludes nitrogen, not oxygen. If you, at any depth or height, exclude oxygen, then you will not be able to help you.

[sir_obs]

Fairly, at 30 meters oxygen is cut into 60 nitrogen, then on helium
But in practice, people in the air go 60 or lower. I saw on television some islands natives diving for some crap there.
If oxygen is not cut below 30 meters, there will be oxygen poisoning, and below 60 there will be nitrogen anesthesia, unless it is excluded from the mixture.
Below are only helium cocktails.

[netmag]

Here you are, funny word. Aerial diving equipment, scuba gear, cylinders are clogged with air. Permissible depth - up to 60 meters. Naturally, from 60 meters you need to climb with decompression stops.

The mixtures are used in deep-sea equipment to reduce the decompression time.

[Polite Moose]

All is not quite so, or rather not at all. If you walk in the air (if you already had to drop below 30m.), Then first cover with nitrogen (akin to alcoholic intoxication, which often gives courage) and at 65m. guaranteed death from oxygen, the partial pressure of which in this case will be equal to 1,5. It is deadly to humans.
If anyone dives at 60m. and below, it is only on mixtures or on holding your breath. Or in a hard suit.

[netmag]

They lifted the word ches. I dived 60 meters in scuba gear. It was supposed to confirm a depth of 60 meters once a year. And it is in scuba gear.

[Holoy]

Today, Actually, this is not MTR day. Today is a professional holiday for special forces of the Armed Forces of Russia.

[Kolobochok]

Happy holiday.

[Dryuya2]

Quote: Holoy

Today, Actually, this is not MTR day.

Abramovich is 50 years old

[Holoy]

And he’s a friend of the Kremlin.

[Taoist]

Yeah ... that’s another task ... A purely oxygen apparatus, of course, greatly facilitates weight, but how are they going to deal with oxygen poisoning at a depth?

[Kolobochok]

Well, then deeper than 10 m is not supposed to dive. Think so.

[netmag]

IDA-74 oxygen isolating breathing apparatus. Allows you to breathe underwater at a depth of 20 meters. Briefly allows you to go down to a depth of 40 meters, followed by a decompression-free rise (no more than 30 minutes).

I think the new device will not be worse than the old one.

[Kolobochok]

After 10 m, CAS is used. Up to 20 m 60%, up to 40 m 40%.

[netmag]

You will excuse me, of course, I have not held an IDA in my hands for 20 years, but I remember his device perfectly. And their own dives in it too. Is your knowledge theoretical? My practical.

[Kolobochok]

Yes, what an apology, everything is normal, practical.

[Mister22408]

Idashka will be more practical in terms of characteristics. The device is a mixture of "Drager" and xs what. The chemical composition of the absorber is a masterpiece. At an altitude of 10 km, will the diver be included in the device autonomously? Swimmer autonomy does not decrease at all , or how on an idol the additional device? Can I see how the valve box at -2 ° C will work? Here is the mask - nothing, one janitor added ... During the tests - you can shoot a couple of comedies, for example, "Specialist tries to master the towing vehicle" . This device is only for fins, but not for PSD.

[netmag]

To be honest, I did not quite understand your comment. IDA-71 that I had, 1 liter oxygen cylinder and two cartridges with a chemical absorber. IDA-71 was positioned at a maximum height of 8000 m. In the training, we were given a ceiling of 6000 meters. Additional oxygen cylinder was only in IDA-85. At minus AIR temperature, the pulmonary automaton worked fine. And at -2 gr. Celsius sea water freezes. Nevertheless, the machine works.

[Mister22408]

You had two boxes (square - ERW, or oval - HPI or O3). 8 km - meets the specifications. In the training how to jump with 8 you were not given. And they did not show the additional device. At -2C, not all seawater (from salinity) does not freeze. But the valves in the box, especially with nozzles (if you walked for more than an hour - you know) they freeze very quickly in the air ... I didn’t write anything behind the aircraft behind the back of the head. When diving for more than 20, an external cylinder with an AGK mixture (black one) is used. I personally know the brow that has been falling through oxygen for more than 20 on the PSD - I got it and gave an injection (a graduate of VMA) in my heart - I'm alive.