The Russian IDA71 military and rebreather navy is a rebreather oxygen intended for use by naval and military divers including explorers of Russian commandos. As provided it is in a plain backpack harness without the help of buoyancy. The casing is pressed aluminum with a hinged cover. It has a small optional nitrox cylinder that can be cut outside to turn it into nitrox mode. It contains one oxygen tube and two absorbent tubes. At the bottom of the casing is an empty space intended for a set of underwater communications.
Here, "up", "back", etc. Refers to a man wearing a device standing on the ground.
The casing is thinner toward the lower end, to reduce the resistance.
At the front of the harness of the naval frog version there is a metal plate projected intended to carry the limpet mine. The front of the harness is a hard rubber "apron."
The circle of each breathing tube can be tied to the shoulder to keep it under control to stop it capturing objects or easily taken from behind.
On each side of the casing is a small clip to bind a parachute.
Video IDA71
Mode operasi
IDA-71 can be used as an oxygen rebreather, or by the addition of an external cylinder, as a rebreather nitrox, which converts between nitrox and oxygen automatically with a pressure-activated valve at nitrox attachment.
It can run as a regular diving rebreather. Or it can be run with one of two absorbent tubes filled with potassium superoxide, which releases oxygen by absorbing carbon dioxide: 2K <2 sub 2 < sub> CO 3 3O 2 ; in this mode the oxygen cylinder is a bailout, or to fill and water the circuit at the beginning of the dive. This mode provides less time setting underwater, but dangerous and will not be at stake by civilians due to the explosive heat reaction that occurs when water gets potassium superoxide; whereas the usual modern refresher absorbers have been designed to avoid producing a caustic solution (commonly called a "cocktail") if it is wet. Tests at the United States Navy Experimental Diving Unit in Panama City, Florida show that IDA71 can provide significantly longer dive times with superoxide in one tube than without.
For many years the IDA71 and the like have become the standard set of frogman divers and Russian naval crew. "71" in its name may be the year of design, as with the numbers in the names of the AK series Russian rifles. The name IDA comes from Russian: ??????????? ??????????? ??????? (translit.Ã, izoliruyushchiy dykhatel'nyy apparat, literally Insulating/Isolating Breathing Apparatus ). The other name is Individual Respiratory Tools (Russian: ????????????????????????? ??????????????????????????????????????? ?????? , translit.Ã, Individualniy Dykhatelniy Apparat).
In the original Russian mode as an oxygen rebreather, the duration of the dive is said to be 4 hours. Filling the two canisters with soda lime and placing the second oxygen cylinder in the empty space at the bottom can increase the duration of the diving to 8 hours.
A number of IDA71 have found their way out of the former Soviet Union to Europe and America, where recreational divers have added wing buoy compensators and turned them into manually controlled closed-circuit rebreathers.
Maps IDA71
Gallery
References
External links
- http://www.therebreathersite.nl/Zuurstofrebreathers/Russian/ida-71.htm information & amp; link
- http://www.therebreathersite.nl/Zuurstofrebreathers/Russian/photos_ida-71.htm pictures & amp; link
- https://web.archive.org/web/20120314061648/http://www.smrebreathers.ru/rebreathers/rebreather/time_before_time/boets2.jpg Frogman with IDA71 underwater rifles and APS
- [1], [2], [3] Ã, :: Russian breeders perform at the dock in Sevastopol on Russian Navy Day with IDA71 with masks filled with oval windows like ordinary diving masks, and AK47 or something similar.
- Images of the Russian frog man on land
Source of the article : Wikipedia
0 Comments