[ASM] Torpille ASM Drone SM

[g4lly]

Je lance un topic générique sur les torpilles, moyen ASM, sonar, drone, sous marin, mine etc.

J'essaierai d'entretenir dans le premier post un sommaire des sujets avec les liens vers les post ou topic.

* Torpille

- La future torpille lourde

- Torpille a changement de milieu

- Torpille a 400 km/h

- torpilles hypercavitante: légende ou réalité

- La Marine nationale parée à recevoir la torpille MU 90

* Detection ASM

- la Marine veut coincer la bulle

- Sonars

- Système de surveillance ASM

- détection ASM

* Drone SM, Mine

- Les drones sous-marins

* Moyen de défense SM

- Protection anti-aérienne pour les sous-marin

- Systeme anti torpilles

[g4lly]

Torpedoes That Fly Away

The U.S. Navy now has two glide kits for air-launched anti-submarine torpedoes. Raytheon recently successfully tested its Fish Hawk system. Two years ago, Lockheed Martin demonstrated a similar system called LongShot.

Putting wings on torpedoes is all about U.S. Navy concern about the growing use of anti-aircraft missiles by submarines. To deal with that problem, it wants to equip some Mk-54 torpedoes, that are normally dropped into the water at a low altitude, by P-3 patrol aircraft, with an add on glide kit. These systems consist of wings, control flaps, a flight control computer, battery and GPS for navigation. The kit allows a torpedo to be released at 20,000 feet, which is outside the range of submarine launched anti-aircraft missiles, and glide, for 10-15 kilometers, down to about 300 feet altitude, where the glide kit would be jettisoned, and the torpedo would enter the water and seek out the sub. Normally, the P-3 has to descend to under a thousand feet to launch the torpedo. This takes time, and puts stress on the aircraft. All existing P-3s are quite old, and it will be a few years before a replacement is ready, so reducing stress on the current ones is a major issue. Indeed, it may be the main issue for introducing the glide kit. The P-3 stress problem is rather larger than the number of subs out there equipped with anti-aircraft missile systems. These systems have been around for years, and many are basically shoulder fired type missiles adapted for launch from a water-proof container that is released by a submerged sub.

There are other reasons for the glide kits. Many subs have sensors that are sensitive enough to detect low flying helicopters (the main target for the subs anti-aircraft missiles) and aircraft. The P-3 is also more effective if it can stay at high altitude all the time. Moreover, the glide kit is easy to build, since it can use items already used for smart bombs (JDAM) and earlier glide kits.

A P-3 usually carries eight torpedoes. The Mk54 is a 12.75 inch weapon, weighing about 700 pounds and with a warhead containing a hundred pounds of explosives. Its guidance system has been designed to work well in shallow coastal waters.

There are several other light weight torpedoes that could use the glide kits. The new French-Italian MU90 lightweight torpedo already has orders for nearly a thousand of the 669 pound, 9.4 foot long, 12.7 inch torpedoes. The MU90 has a maximum speed of over 90 kilometers an hour (with a max range of 12 kilometers), and a minimum speed of 52 kilometers an hour (for a max range of 25 kilometers). It can operate at depths of over 3,000 feet. The MU90 apparently does a very good job with being stealthy (not alerting the target sub that it was coming), and being good at defeating countermeasures. The MU90 uses sonar and an acoustic sensor for finding its target, and its warhead can penetrate the hulls of all subs currently in service.

One of the MU90s main competitors is the American Mk 54 lightweight torpedo, which entered production four years ago. Costing about the same as the Mu90 (about a million dollars each), the Mk 54 is a cheaper, and somewhat less capable replacement for the Cold War era high tech Mk 50 and the old reliable Mk 46. The 750 pound Mk 54 is a more cost effective alternative to the three million dollar Mk 50, which was in development for over two decades. The Mk 50 was difficult to build because it was meant to be a "smart" torpedo that was light enough to be carried by helicopters, and could go deep to kill Russian nuclear subs. But when the Mk 50 finally became available in the late 90s, the typical target was a quieter diesel-electric sub in shallow coastal waters. So the Mk 54 was developed, using cheaper, off-the-shelf, electronic components, some technology from the Mk 50 and larger Mk 48, as well as the simpler, but not deep diving, frame and propulsion systems of the older Mk 46 lightweight torpedo. Thus the ten foot long Mk 54 is a bit of a hybrid, created to save money, and also be more capable against quieter subs operating in shallower water. The Mk 54 has a range of about 10,000 meters and a top speed of about 72 kilometers an hour. It has a built in sonar that can search for the target sub, as well as acoustic sensors (listening devices to pick up any sounds a sub might make). The Mk 54 also has an onboard computer and a data file of underwater noises and search tactics, which are used as it tries to find its target, and keep after it until it can hit the sub and destroy it with the hundred pounds of explosives in the warhead.

In the last 40 years, some 25,000 of the older Mk 46 torpedoes were made, and at least a few thousand Mk 54s will be manufactured. Mk 50s are kept in inventory to deal with the few hostile nuclear subs that are still out there, although the Mk 54 also has a capability of going deep, just not as deep as the more expensive Mk 50. The MU90 is seen as a better value than the Mk 54, if only because it is a more recent design, and costs the same.

---

La Navy utilise des kit de planage pour délivrer ses torpille depuis des aeronef. Il s'agit des Kit type longshot aussi utilisé avec les Mk82, qui permet un planage guidé sur plus d'une dizaine de kilometre. La nécessité est multiple pour la Navy. En premier lieu pour se tenir hors de portée des defense anti aerienne sous marine qui commence a se diffuser. En second lieu parce que les sous marin moderne dispose de senseur suffisament sensible pour détecte un aeronef volant a basse altitude par sont bruit dans l'eau. Enfin pour gagner du temps et préserver les cellule des patmar ... qui sinon doivent descendre a moins de 300m pour larguer leur torpille ... puis regagner leur altitude de patrouille.

Associé a ces kits de planage - "Fish Hawk system" et "Longshot" - la Mu90 pourrait etre un meilleur choix que la Mk 54 ancienne et pourtant pas meilleur marché.

[Philippe Top-Force]

Armement anti-sous-marins

Les torpilles sont l’unique armement contre les sous-marins. 300 torpilles légères MU 90 auront été livrées d’ici 2011 sur frégates, hélicoptères de combat et avions de patrouille maritime.

[Invité]

Raytheon plans to launch a small unmanned air vehicle from a submerged U.S. Navy submarine early next year to demonstrate its concept for extending the boat's sensor range in littoral operations.

Last month the company demonstrated its UAV launch concept under Phase 1 of the Submarine Over the Horizon Organic Capabilities (Sothoc) program funded by the Office of Naval Research and the Submarine Force.

The concept uses a submarine launch vehicle (SLV) containing the electrically powered UAV and stored on board as an all-up round. Ejected from the submerged submarine's trash disposal unit, the SLV is weighted to descend to a safe distance from the boat, then shed the weight and inflate a float collar.

The collar is pulsed to control the rate of ascent. As it approaches the surface, the SLV deploys a water drogue to provide stabilization and a vane to align it into the wind. The tube then pivots to a 35-degree angle and ejects the UAV.

"The SLV is a method of getting a UAS to the surface dry, then transitioning it to the air," says Jeffrey Zerbe, Raytheon's Sothoc program director.

The deployment concept was demonstrated in September at the Naval Undersea Warfare Center's shallow water test range at Narragansett Bay, R.I., where two SLVs were deployed over the side of a surface ship.

"The vehicles descended to 80 feet reverted to positive buoyancy, floated to the surface, stabilized in variable sea states, aligned into the wind, and then launched an inert representative UAS at precise orientation and velocity," according to Raytheon.

In early November, Zerbe says, the company plans to conduct a second "over-the-side" demonstration from a ship off Point Mugu, Calif. This time the SLV will deploy an actual UAV, which will then conduct a full maritime interdiction mission profile.

This will be followed early next year by a launch from a submerged submarine, probably a Los Angeles-class boat off Hawaii, under Phase 2 of the program, says Zerbe. Raytheon has already demonstrated integration of its multi-vehicle control software into the submarine's BYG-1 combat system, he says.

Raytheon will use "a mature small UAV" for the demonstration, says Zerbe, and the electrically powered, folding-wing air vehicle is capable of being launched in wind speeds up to 20-30 knots. The submarine-launched UAV is intended to be expendable, although it could be recovered via a beach, he says.

Zerbe says the UAV launcher is part of a system concept to provide real-time situational awareness to submarines at significantly increased ranges. This includes to ability to work with other UAVs that may be operating in the area.

http://www.aviationweek.com/aw/generic/story.jsp?id=news/SLV10288.xml&headline=Raytheon%20to%20Launch%20UAV%20from%20Submarine&channel=defense

En résumé, un conteneur se trouvant dans les lance-torpille ou système de lancement verticaux est lancé, se stabilise à la surface et projette un UAV

[Philippe Top-Force]

Lu dans le dernier rapport sénatorial.

FTL - future torpille lourde (Artémis)

Le programme de future torpille lourde ou torpille F21 a été lancé en 2008. Destinée aux sous-marins nucléaires lanceurs d'engins et aux sous-marins nucléaires d'attaque, cette torpille remplace la torpille F17 dont l'obsolescence technique et opérationnelle sera atteinte en 2015. Il s'agit d'une adaptation a minima de la torpille italienne Black Shark, pour les sous-marins français. Elle est le fruit de la coopération industrielle entre DCNS et la société italienne WASS, filiale de Finmeccanica.

Cette arme est aujourd'hui un produit d'exportation et a été sélectionnée par de nombreuses marines, dont celles du Chili, de la Malaisie ou du Portugal pour équiper leurs forces sous-marines.

Le coût total du programme, aux conditions financières 2007 est de 427 millions d'euros, et le coût unitaire d'une torpille est de l'ordre de 2 millions d'euros. La cible du programme a été ramenée de 105 à 93 vecteurs.

Le projet de loi de finances pour 2009 prévoit l'ouverture de 43,7 millions d'euros de crédits de paiement et 7,9 millions d'autorisations d'engagement

Torpilles légères MU 90

Les torpilles légères MU90 ont pour objectif opérationnel d'assurer la lutte contre les sous-marins nucléaires les plus performants. Elles sont mises en oeuvre à partir des frégates, des avions de patrouille maritime ATL2 et des hélicoptères Lynx, puis NH0.

Le coût total du programme est de 1,322 milliard d'euros aux conditions financières 2007, pour une cible initiale de 600 engins, ramenée à 300 du fait des orientations du Livre blanc. Le coût unitaire de la torpille, avant renégociation du contrat, était inférieur au million d'euros.

Le projet de budget prévoit 29,7 millions d'euros en crédits de paiement pour la livraison de 75 torpilles supplémentaires en 2009, ce qui portera à 300 le nombre de torpilles livrées

[xav]

Question:

Les Rubis-Amethystes utilisent elles toujours des F17 mod 2? Ou bien sont elles passées au MU90?

Meme question concernant les SNLE, elles ont remplacées leurs torpilles L5 ou pas ?

[Chris.]

les Mu90 c'est des torpilles légères (pour aéronefs et moyens de surface), à la différence des F17 et L5, qui sont des torpilles lourdes.

Le remplaçant de ces dernières, c'est la Black Shark (ou un dérivé), pas encore en service dans la marine nationale il me semble.

[Arka_Voltchek]

les Mu90 c'est des torpilles légères (pour aéronefs et moyens de surface), à la différence des F17 et L5, qui sont des torpilles lourdes.

Le remplaçant de ces dernières, c'est la Black Shark (ou un dérivé), pas encore en service dans la marine nationale il me semble.

les remplaçantes des F17 mod2 sont les F21 Artémis. Commandées, mais pas encore livrées, et ne seront disponible que sur une partie des Rubis (les quelques encore en services quand elles arriverons)

@+, Arka

[xav]

Merci les gars.

[Philippe Top-Force]

Contrer les torpilles, premier contrat DCNS exportation

 

Les Scorpène brésiliens seront équipés du système Contralto Premier client exportation | Mer et Marine http://t.co/md0mC5BYYz

— Philippe Top-Action (@top_force)

November 5, 2013

[xav]

http://www.navyrecognition.com/index.php?option=com_content&task=view&id=1560

 

Modifié le 11 février 2014 par xav

[Akewing]

Bonsoir, J'ai en entendu parler de la technologie MHD et de possibilités d'applications aux torpilles.

 

Qu'en est-il aujourd'hui ?

Modifié le 18 mars 2014 par Akewing

[ARMEN56]

Nombreux sites en parlent dont ceux liés aux travaux de JP Petit....applications mili ?

Modifié le 20 mars 2014 par ARMEN56

[Bruno]

Video présentant les nombreuses solutions de veille et lutte anti-mines de la PME Eca Robotics (pas réussi à la mettre ici directement !) : http://bcove.me/z9027kwd

Modifié le 12 avril 2014 par Bruno

[xav]

U.S. Navy Development Squadron 5 Receives First LTV 38 Unmanned Undersea Vehicle

Commander, Submarine Development Squadron 5 (CSDS 5), Detachment UUV, took delivery of Large Training Vehicle 38 (LTV 38), an unmanned undersea vehicle (UUV) Aug. 22. The delivery makes LTV 38 the first UUV to join the vehicle inventory used by detachment UUV at Naval Undersea Warfare Center Keyport.
[...]
As a UUV, LTV 38 is able to perform at a maximum depth of 1,000 meters for up to 72 hours. It is designed as a full-pressure hull vehicle, capable of both line of sight and over the horizon communications, and can also conduct limited autonomous contact avoidance maneuvers via acoustic sensors while anchored and such missions are conducted and controlled remotely.

UUVs allow naval submarines to safely gain access to denied areas with revolutionary sensors and weapons. These areas may be denied based on unacceptable risks to a submarine such as extremely shallow water, very poor acoustic conditions, or mined waters. UUVs provide unique capabilities and extend the "reach" of naval platforms while reducing the risk to the submarine and its crew.

The use of unmanned vehicles in the undersea environment is projected to grow for the Navy. During a recent visit to the Pacific Northwest, Chief of Naval Operations, Adm. Jonathan Greenert, told Sailors he envisions having autonomous underwater vehicles on patrol by the end of the decade.

U.S. Navy Development Squadron 5 Receives First LTV 38 Unmanned Undersea Vehicle

[BPCs]

U.S. Navy Development Squadron 5 Receives First LTV 38 Unmanned Undersea Vehicle

U.S. Navy Development Squadron 5 Receives First LTV 38 Unmanned Undersea Vehicle

La bestiole fait 32 inches de diamètre et 27 feet de long : cela fait 80 cm de diamètre et plus de 8 m de long :

Cela ne va pas rentrer dans un tube de soum ... ???

EDIT :

Comme dit XAV sur Military photo :

"I wonder if this is compatible with virginia payload module/universal launch and recovery module"

http://www.militaryphotos.net/forums/showthread.php?240603-U-S-Navy-Development-Squadron-5-Receives-First-LTV-38-Unmanned-Undersea-Vehicle&p=7360142

C'est à dire un truc un peu comme cela (car ici sur un SSGN) :

Modifié le 29 août 2014 par BPCs

[xav]

J'ai fait une ITW sur ce systeme cette année:

 

Quand à ma question, je l'ai posé depuis à l'US Navy, j'attends leur retour... si retour il y a...

[BPCs]

Mais il me semblait que les drux modules étaient identiques à l'exception de la longueur ???

[g4lly]

Il me semble que le Sea Stalker a plutot pour vocation d'etre lancé depuis des navire de surface. Certain Burke en ont utilisé par exemple. Je crois que le machin sert de dériskeur pour le LDUUV INP qui devrait avoir une autonomie supérieure a 2 mois!

[Philippe Top-Force]

DCNS poursuit la mise au point d’un UUV pour sous-marins | Mer et Marine http://t.co/xd7U7ewHnA

— Philippe Top-Action (@top_force)

October 28, 2014

[xav]

At IDEF 2015 WASS Showcased the Black Scorpion and Black Arrow torpedoes

Italian company WASS (member of Finmeccanica) was showcasing two of its latest toperdo systems during IDEF 2015 (the International Defence Industry Fair currently held in Istanbul, Turkey). The Black Scorpion mini torpedo designed to support the contact classification process and the Black Arrow new generation lightweight torpedo.

Talking to Navy Recognition during IDEF 2015, a WASS representative explained that the Black Scorpion was designed to be launched from sonobuoy tubes found on board ASW helicopters and Maritime Patrol Aircraft. The mini torpedo is intended to be used when the submarine contact is not accurate. The Black Scorpion "pings" in the water which either locates the target or forces the target to move. Black Scorpion retains the abillity to hit the target and induce damage with its small warhead.

[...]

Also on display on WASS stand during IDEF 2015 was the Black Arrow torpedo. The WASS representative explained that this new generation lightweight torpedo is an evolution of the MU90 and A244 and its main strength is its reduced life cycle cost.

http://www.navyrecognition.com/index.php?option=com_content&task=view&id=2711

[xav]

Alseamar Showcasing the Sphyrene Swimmer Delivery Vehicle at UDT 2015

At the UDT 2015 Undersea Defence Technology exhibition and conference currently taking place in the maritime city of Rotterdam, Netherlands, French company Alseamar (Alcen group) is showcasing its Sphyrene swimmer delivery vehicle (SDV) for special forces.

 

 

http://www.navyrecognition.com/index.php?option=com_content&task=view&id=2784

 

Alseamar a perdu l'appel d'offre en France au profit du SWUV de ECA Group mais propose tout de meme son Sphyrene à l'export