Operating principle of hand grenade fuses

Unified hand grenade fuse modernized UZRGM

The UZRGM grenade fuse (modernized unified hand grenade fuse) (Fig. 7) is intended to explode the explosive charge in F-1, RGD-5 and RG-42 grenades.

The impact mechanism serves to ignite the igniter primer. It consists of a hammer tube, a connecting sleeve, a guide washer, a mainspring, a firing pin, a firing pin washer, a trigger lever and a safety pin with a ring.

The impact mechanism tube is the basis for assembling all parts of the igniter.

The connecting sleeve serves to connect the fuse to the grenade body. It is placed on the bottom of the impact mechanism tube.

The guide washer is a stop for the upper end of the mainspring and directs the movement of the firing pin. It is fixed in the upper part of the impact mechanism tube.

Rice. 7. Modernized unified hand grenade fuse (UZRGM)

UZRGM device

It consists of a striking mechanism and the fuse itself.

In official use, the striker is constantly cocked and held by the trigger lever fork.

The trigger lever is connected to the percussion mechanism tube by a safety pin. Before throwing a grenade, the plastic plug is turned out and the fuse is screwed in its place.

After pulling the pin, the position of the fuse parts does not change.

At the moment the grenade is thrown, the trigger lever separates and releases the firing pin. The firing pin, under the action of the mainspring, pierces the igniter cap. A beam of fire from the primer ignites the moderator and, after passing through it, is transmitted to the detonator primer. The explosion of the detonator capsule initiates the detonation of the explosive charge. The explosion of the explosive charge crushes the grenade body into fragments.

Interaction of UZRGM parts (Fig. 10, 11)

1. The pin is pulled out, the grenade is thrown, the lever is separated, the firing pin punctures the primer - the igniter. 2. The powder composition of the moderator burns out, the detonator primer fires

Rice. 8. Impact mechanism: 1 – impact mechanism tube; 2 – guide washer; 3 – mainspring; 4 – drummer; 5 – striker washer; 6 – release lever; 7 – safety pin with ring; 8 – connecting sleeve.

Rice. 9. Fuse: 9 – primer – igniter; 10 – retarder bushing; 11 – moderator; 12 – capsule – detonator. Rice. 10. Fig. eleven.

Impact-remote fuse UDZ (Fig. 12)

RGO and RGN hand fragmentation grenades are equipped with a shock-remote UDZ fuse.

Rice. 12. Impact-remote fuse UDZ

Rice. 13. Device of shock-remote fuse UDZ

1 – body. Safety mechanism: 2 – trigger lever; 3 – striker with a sting; 4 – mainspring; 5 – ring with a pin; 6 – bar; 7 – plug; 8 – primer – igniter. Long-range cocking mechanism: 9 – powder fuses; 10 – primer – igniter; 11 – engine; 12 – spring. Target sensor: 13 – sting; 14 – spring; 15 – sleeve; 16 – bushing; 17 – cargo. Self-liquidating mechanism: 18 – moderator; 19 – capsule – detonator. Detonation unit: 20 - capsule - detonator.

Interaction of parts and mechanisms

Initial position

In the initial position, the striker with the sting (3) and the plug with the igniter primer (7) are held by the trigger lever. The trigger lever is connected to the igniter body by a safety pin. The engine (11) with the igniter capsule (10) is offset relative to the tip (13) and is held by the stoppers of the powder fuses (9), its spring (12) is in a compressed state. The bushing (16) under the influence of the spring (14) presses the load (17).

Rice. 14 Interaction of parts and mechanisms impact-remote fuse UDS

Position of parts and mechanisms in official circulation (Fig. 14)

When preparing a grenade for throwing, the trigger lever is pressed tightly with your fingers to the body of the grenade, the ends of the safety pin are straightened with the fingers of your free hand, then it is pulled out by the ring, while the position of the fuse parts does not change.

At the moment the grenade is thrown, the trigger lever separates and releases the striker with the sting (3) and the bar (6). The plug (7) with the igniter capsule comes out of the igniter housing socket. The firing pin, under the action of the mainspring (4), pierces the igniter primer (8) with its sting.

The fire beam ignites the powder press-fit fuses (9) and the pyrotechnic composition of the self-liquidator moderator (18).

After 1-1.8 seconds. The powder compositions of the fuses burn out and their stoppers, under the influence of springs, disengage with the engine (11).

The engine, under the influence of the spring (12), moves into the firing position.

The long-range cocking mechanism prevents the grenade from being detonated if it accidentally falls from the hand.

Interaction of parts and mechanisms when throwing and meeting a grenade with an obstacle (surface)

When meeting an obstacle (surface), the load (17) shifts in the direction of the inertial force component and acts on the sleeve (16). The bushing, overcoming the resistance of the spring (14), displaces the tip, which pierces the igniter primer (10). The fire beam is transmitted to the detonator capsule (20), which causes the explosive charge to detonate.

In case of failure, the fuse will operate in inertia after 3.3 - 4.3 seconds.
the moderator composition burns out, the detonator cap (19) of the self-destructor ignites, causing the detonation unit to explode. Tags: fire training

Literature

Monetchikov S.
[www.bratishka.ru/archiv/2005/3/2005_3_10.php Pocket artillery] // Bratishka: Monthly magazine of special forces units. - M.: LLC "Vityaz-Bratishka", 2005. - No. 3. - P. 54-57.
Novikovsky E.A.
UDS (RGN, RGO) and the operation of its parts and mechanisms // Domestic small arms, grenade launchers, hand fragmentation grenades and ammunition. - Barnaul, 2009. - P. 109.
Pribylov B. Kravchenko E.
The device of the fuse of the remote control // Hand and rifle grenades. - Moscow: Arctic 4D, 2008. - 776 p. — ISBN 978-5-902835-04-2.
Shiryaev D.
Striking with fragments (Russian) // World of weapons: magazine. - 2005. - April (vol. 07, no. 04). — pp. 24-27. — ISSN [www.sigla.ru/table.jsp?f=8&t=3&v0=1607-2009&f=1003&t=1&v1=&f=4&t=2&v2=&f=21&t=3&v3=&f=1016&t=3&v4=&f=1016&t=3&v5 =&bf=4&b=&d=0&ys=&ye=&lng=&ft=&mt=&dt=&vol=&pt=&iss=&ps=&pe=&tr=&tro=&cc=UNION&i=1&v=tagged&s=0&ss=0&st=0&i18n=ru&rlf=&psz =20&bs=20&ce=hJfuypee8JzzufeGmImYYIpZKRJeeOeeWGJIZRrRRrdmtdeee88NJJJJpeeefTJ3peKJJ3UWWPtzzzzzzzzzzzzzzzzbzzvzzpy5zzjzzzzzzzzzzzzzzzzzzzzzzzzz zzzzztzzzzzzzbzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzyeyTjkDnyHzTuueKZePz9decyzzLzzzL*.c8.NzrGJJvufeeeeeJheeyzjeeeeJh*peeeeKJJJJJJJJJmjHvOJJJJJJJJfe eeieeeeSJJJJSJJJ3TeIJJJJ3..E.UEAcyhxD.eeeeeeuzzzLJJJJ5.e8JJJheeeeeeeeeeeeyeyeK3JJJJJJJJ*s7defeeeeeeeeeeeeeeeeeeeeeeeeSJJJJJJJZIJJzzz1..6LJJJJJJtJJZ4….EK*&deb ug=false 1607-2009].

An excerpt characterizing the UDS (fuse)

“Dieu me la donne, gare a qui la touche,” he said (the words Bonaparte said when laying on the crown). – On dit qu'il a ete tres beau en prononcant ces paroles, [God gave me the crown. Trouble is to those who touch it. “They say he was very good at pronouncing these words,” he added and once again repeated these words in Italian: “Dio mi la dona, guai a chi la tocca.” “J'espere enfin,” continued Anna Pavlovna, “que ca a ete la goutte d'eau qui fera deborder le verre.” Les souverains ne peuvent plus supporter cet homme, qui menace tout. [I hope that this was finally the drop that overflows the glass. The sovereigns can no longer tolerate this man who threatens everything.] – Les souverains? Je ne parle pas de la Russie,” said the Viscount politely and hopelessly: “Les souverains, madame!” Qu'ont ils fait pour Louis XVII, pour la reine, pour madame Elisabeth? Rien,” he continued, animated. - Et croyez moi, ils subissent la punition pour leur trahison de la cause des Bourbons. Les souverains? Ils envoient des ambassadeurs complimenter l'usurpateur. [Sirs! I'm not talking about Russia. Sirs! But what did they do for Louis XVII, for the queen, for Elizabeth? Nothing. And, believe me, they are being punished for their betrayal of the Bourbon cause. Sirs! They send ambassadors to greet the thief of the throne.] And he, sighing contemptuously, changed his position again. Prince Hippolyte, who had been looking at the Viscount through his lorgnette for a long time, suddenly at these words turned his whole body to the little princess and, asking her for a needle, began to show her, drawing with a needle on the table, the coat of arms of Condé. He explained this coat of arms to her with such a significant air, as if the princess had asked him about it. – Baton de gueules, engrele de gueules d’azur – maison Conde, [A phrase that cannot be translated literally, as it consists of conventional heraldic terms that are not used quite accurately. The general meaning is this: The coat of arms of Condé represents a shield with red and blue narrow jagged stripes,” he said. The princess listened, smiling. “If Bonaparte remains on the throne of France for another year,” the Viscount continued the conversation that had begun, with the air of a man who does not listen to others, but in a matter that is best known to him, following only the course of his thoughts, “then things will go too far.” Through intrigue, violence, expulsions, executions, society, I mean good society, French, will be destroyed forever, and then... He shrugged his shoulders and spread his hands. Pierre wanted to say something: the conversation interested him, but Anna Pavlovna, who was watching him, interrupted. “Emperor Alexander,” she said with the sadness that always accompanied her speeches about the imperial family, “announced that he would let the French themselves choose their mode of government.” And I think there is no doubt that the whole nation, freed from the usurper, will throw itself into the hands of the rightful king,” said Anna Pavlovna, trying to be polite to the emigrant and royalist. “This is doubtful,” said Prince Andrei. “Monsieur le vicomte [Mr. Viscount] quite rightly believes that things have already gone too far. I think it will be difficult to go back to the old ways. “As far as I heard,” Pierre, blushing, again intervened in the conversation, “almost the entire nobility has already gone over to Bonaparte’s side.” “That’s what the Bonapartists say,” said the Viscount, without looking at Pierre. – Now it is difficult to know the public opinion of France. “Bonaparte l'a dit, [Bonaparte said this," said Prince Andrei with a grin. (It was clear that he did not like the Viscount, and that, although he did not look at him, he directed his speeches against him.) “Je leur ai montre le chemin de la gloire,” he said after a short silence, repeating the words again Napoleon: – “ils n'en ont pas voulu; Je leur ai ouvert mes antichambres, ils se sont precipites en foule”... Je ne sais pas a quel point il a eu le droit de le dire. [I showed them the way of glory: they did not want; I opened my halls to them: they rushed in a crowd... I don’t know to what extent he had the right to say that.] - Aucun, [Nothing] - objected the Viscount. “After the Duke’s murder, even the most biased people stopped seeing him as a hero.” “Si meme ca a ete un heros pour certaines gens,” said the Viscount, turning to Anna Pavlovna, “depuis l'assassinat du duc il ya un Marietyr de plus dans le ciel, un heros de moins sur la terre.” [If he was a hero to some people, after the Duke was killed there was one more martyr in heaven and one less hero on earth.]

Notes

↑ 123
Impact-remote fuse UDZ // Ammunition and means of destruction. Weapons and technologies of Russia. Encyclopedia. XXI century / Under the general editorship of S. Ivanov. - Moscow: Publishing House "Weapons and Technologies", 2006. - T. 12. - P. 408.
↑ 1 2 Dick V.N.
Hand grenades RGN, RGO with UDZ fuse // Explosives, gunpowder and ammunition of domestic production. - Minsk: Okhotkontrakt, 2009. - T. 1. - P. 204. - 280 p. — 1000 copies. — ISBN 978-985-6911-02-9.
Korsakas D.
[www.kalashnikov.ru/upload/medialibrary/ed8/26_30.pdf A weighty argument] (Russian) // Kalashnikov. Weapons, ammunition, equipment: magazine. - 2003. - November (No. 11). — P. 26-30.

RGO hand grenade: design features and conditions of use