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Siirsin tänne Ukrainan sota / konflikti ketjusta kysymyksen 105 mm L119 (britit) / M119 (USA) tykin tuliputken eliniästä.

Käyttö


Tuliputken elinikä laukauksina alkuperäisen valmistajan mukaan:

Aseen nykyisen valmistajan BAE:n esitteestä löytyy L119 tykin tuliputkelle ja lavetin (carriage?) laukausmäärät taulukkoriveillä:
"L119 Barrel life 7 500 EFC's, carriage life 20 000 average rounds"
Esitteen lopussa, taulukon alla mainitaan vielä erikseen: "Barrel life: L119 is good for 20,000 rounds or 7 500 EFC’s with conventional rounds. Dependent on ammunition type"

Esitelinkki: https://www.baesystems.com/en-media/uploadFile/20210404042852/1434610546921.pdf

Nyt USA:sta toimitettu erä sisälsi 36 000 ls / 16 kpl M119 tykkiä = 2 250 ls/ tykki, joka on aika vähän putken EFC-rajaan 7 500 ls nähden, mutta ehkä lähettävät myöhemmin lisää tai britit lisäävät ampumatarvikkeiden toimituksia. Yhteensopivuuden myötä muutkin 105 mm käyttäjämaat voinevat olla ls-toimittajina.

Edellä oleva vastaus sisältää oletuksen, että tuliputki on alkuperäisen valmistajan eli brittien L119 konstruktion mukainen myös USA:n valmistamissa M119 tykeissä elinikä-arvion suhteen.

Tekninen lisätieto:
Ohessa lisätietona linkki USA:n M119 tykin modifikaatio -uutiseen:

En usko, että UK toimittaisi ammuksia. Kuten jo aiemmin totesin Ukraina-threadissa:

Jenkit ovat vissiin myös hiljan toimittaneet noita brittien lisäksi, siis M119 105 mm haupitseja.

The second item in the -- what I would call the artillery bucket, is 16 howitzers. Now, these are the 105 mm howitzers, and then 36,000 105 mm artillery rounds to go with these howitzers. And this particular capability, it complements a capability that was previously provided by the United Kingdom. The U.K. provided 105 mm artillery systems, and we had previously provided accompanying artillery rounds.


Britit itsehän eivät ole käyttäneet tykkejä sitten vuoden 2005, koska varastot loppuivat, ja ukrainalaisten kouluttajatkin haalittiin Uudesta-Seelannista.

According to information published by the New Zealand Herald on 23 May, New Zealand Prime Minister Jacinda Ardern said the Defence Force personnel would send 30 troops to Britain to train Ukrainian forces on how to use the 105mm L119 light gun. They would stay in the UK until the end of July.
In British service, the L119 was used only for training at the Royal School of Artillery while stocks of 105 mm How lasted, and the last British L119s were retired in 2005.

 
Siirsin tänne Ukraina-ketjusta tykistökranaattien sirpalejakautumisen pohdintaa:
Noi on niin tuurista kiinni. Sirpalejakauma ei ole tosiaankaan tasainen joka suuntaan. Varmaan valmistustoleranssit, kranun räjähdysainetäyttö, maan pehmeys, tulokulma ja kuun asento ;) jne. vaikuttavat.

Intissä näitä päästiin testailemaan monenmoista. Räjäyteltiin sirpaleviuhkamiinaa, sakaramiinoja, putkimiinoja, käsikranuja ja heittimen kranuja, kylkimiinoja jne jne. erilaisten maalilaitteiden läheisyydessä ja eri korkeuksilla.

Hyvin on jäänyt mieleen esim. tilanne missä laitettiin 2 seisovaa ukon kuvaa ja yksi makaava ja alle 5m päähän käsikranu noin 10cm maasta. Seisovissa ukoissa oli nilkan korkeudella max 1-2 reikää ja siinä makaavassa oli 20+ reikää ympäriinsä. Kapiainen sitten änkytti, että kannattaa kuitenkin mennä "suojaan" jos kranu tulee, että tämä nyt oli ihan sattumaa. Niinpäniin, sattumaapa tosiaan ja se on kyllä ihan joka kerta sattumaa. Vähän kuin jotain veikkauksen peliä pelaisi. Välillä osuu ja välillä ei. Joskus joku selviää vaikka kranun päällä makaamalla mutta vieressä oleva ottaa sirpaleen otsaan. ;)

Itse olen ihmetellyt niitä Ukr tykistövideoita droneista kuvattuina missä usein lähtee räjähdyksen oik/vas sivusuuntaan kymmenien metrien savupilvet mutta ei oikein mitään eteen/taakse. Mistä tommonen voi johtua? Epätasainen täyttö kranussa?
Kommentti tuohon viimeiseen kohtaan ja kohtuu hyvä viite, josta näkyy 122 mm O-462 TNT / 122 M56 Comp B kranaattien ja jonkun D=128 mm ohjuksen taistelulatauksien tappavat (vähintään 1 sirpale/m^2) sirpalejakaumat. Ne eivät ole tasaisia kranaatin/taistelukärjen pituussuunnassa vaan enin osa sirpaleista lähtee sivulle, joka lienee tavoite, vähemmän eteen ja taakse. Samantapainen sirpalejakauman "perhos"-kuvio lienee useimmilla tykistön /kr-heittimistön kranaateilla. Se johtunee ensisijaisesti geometriasta eli ammuksen kunkin poikkileikkauksen sirpaloituvan osan (metallikuori) ja räjähdysaineen massojen suhteesta sekä kuoren pinnan normaalin suunnasta (kuoren kaarevuuksista). Ohessa kuvat viitelähteestä:
1661975382263.png
Figure 4. Lethal zone for 122 mm OF-462.
1661975707753.png
Figure 5. Width of lethal zonesprays (122 mm OF-462).

Ohessa artikkeliviite, josta kuvat on poimittu:
https://www.researchgate.net/public...stics_of_Several_Natural_Fragmenting_Warheads

Arvelen, että Ukraina-videoiden "savupilvet" ovat sirpaleiskemien synnyttämiä pölypilviä maasta tai rakenteista. Ne yltävät sivulle leveänä ja pitkänä viuhkana, eteen pienenä ja kapeana sekä taakse kapeana viuhkana ja ylöspäin. --> Pölähdykset sivusuunnassa näkyvät suurempina.

Ohessa vielä viite suomalaisten sirpaleiden vaikutuksen mallinnustutkimuksen artikkeliin kuitenkin englanniksi kirjoitettuna Tiede ja ase lehdessä:
https://journal.fi/ta/article/view/113772
Artikkelin kuvasta 5 näkyy ammuksen nopeuden vaikutus vaikutuskuvioon mallinnukseen perustuen staattiseen tilanteeseen nähden (joita arvelen edellisten kuvioiden ehkä olevan). Artikkelin lopussa on pitkä viiteluettelo, jonka perusteella aiheeseen pääsee syventymään perusteellisemmin, ;).
 
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105mm GAU
 
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According to Joseph P. Chacko in Frontier India, Russia has begun mass production of its newest arctic artillery system nicknamed "Magnolia", produced by Uralvagonzavod (UVZ), part of Rostec. In the Autumn and winter of 2021, the system was successfully tested in cold temperatures in northern latitudes. Artillery units deployed in the Arctic and the Extreme North will receive Magnolias.
In 2017, the head of the Main Rocket and Artillery Directorate of the Russian Ministry of Defense, Lieutenant General Nikolai Parshin, announced the development of the 120-mm Magnolia self-propelled artillery gun on the chassis of an armored two-link tracked carrier and Tor-M2DT anti-aircraft missile system on the DT-30PM snow and swamp vehicle.
The self-propelled artillery system Magnolia is built on the armored two-link tracked carrier DT-30PM chassis. The combat compartment is mounted on a two-section tracked platform of an upgraded Vityaz DT-30PM snow-and-swamp-going vehicle. The front section with a five-roadwheel chassis carries the driver’s cabin, power plant units, and system elements. The back six-roadwheel chassis carries the combat compartment borrowed from Vena 2S31 self-propelled mortar. The turret design provides round-view horizontal gun laying. Magnolia can fire all types of 120mm mortar munitions and effectively fulfil a broad range of missions. It operates like a cannon for direct fire and as a howitzer and mortar from closed positions. The two-section undercarriage provides all-terrain capacity in marshlands and hard-of-access areas.

It has a carrying capacity of 10 tonnes and weighs 27.5 tonnes. It is driven by an 800-horsepower B-46-5C diesel engine, allowing the system to attain a maximum speed of 45 km/h. On the water, the vehicle may reach 6 km/h. The range is claimed to be 700 kilometers.
 
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K239 Chunmoo MLRS
According to information published by the Polish "Defence24" website on August 27, 2022, during an interview, the Polish Defense Minister Mariusz Błaszczak announced that Poland could acquire South Korean K239 Chunmoo rocket launcher systems.
The Chunmoo K-MLRS carries two launch pods able to fire different calibers of rockets. It can fire 130 mm non-guided rockets (20 rockets to each pod), 227mm non-guided rockets (6 rockets to each pod), and 239mm guided rockets (6 rockets to each pod). The 130mm rockets have a range of 36 Km while the larger 230mm-class rockets have a range of about 80 Km for the non-guided one and 160 Km for the guided variant.
 
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ERCA Paladin
According to information published by the United States army on August 29, 2022, the U.S. Army Futures Command continues its modernization efforts with long-range precision fires, its cross-functional teams along with U.S. Army Yuma Proving Ground are working to develop new capabilities to increase the rate of fire of the Extended Range Cannon Artillery or ERCA.
The ERCA (Extended Range Cannon Artillery) is considered the signature effort within the U.S. Army’s top Modernization Priority, Long Range Precision Fires. The Long Range Precision Fires Cross Functional Team has set plans in motion for a two-phased capability improvement by first providing the Soldier a self-propelled howitzer with increased range and lethality, and then providing an increase to rate-of-fire.

The ERCA effort rose to prominence in November 2018 when an earlier variant of the ERCA system fired the XM1113 Rocket Assisted Projectiles to just beyond 70 kilometers at Yuma Proving Ground. They were the farthest-reaching shots ever made by U.S. Army howitzers at the time, and more than double the reach of currently fielded Army artillery systems.

In November 2018, an earlier variant of the ERCA, the XM1299 howitzer, fired projectiles out to 72 kilometers at Yuma, the farthest-reaching shots ever made by U.S. Army howitzers, and more than double the reach of currently fielded Army artillery systems.
 
The latest batch of security assistance to Ukraine includes:
During a press conference from Germany on Sept. 8, Austin, along with Chairman of the Joint Chiefs of Staff Army Gen. Mark Milley, said Ukraine is showing demonstrable battlefield success with donated weaponry.

“We are seeing real and measurable gains from Ukraine and the use of these systems,” Milley said.
The first batch of M777 155mm howitzers was delivered to Ukraine in April. Since then, the U.S. has delivered 126 M777s and nearly 500,0000 rounds of ammunition. Ukraine has struck more than 400 targets with HIMARS loaded with Guided Multiple-Launch Rocket System (GMLRS) rounds, Milley said.


Jenkkien listalta mikä on tuo 155mm Remote Anti-Armor Mine System?
 
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M1023 Remote Area Denial Artillery Munition RADAM

The Remote Area Denial Artillery Munition (RADAM) is a repackaging of seven Remote Anti-Armor Mines (RAAM) and five Area Denial Artillery Munitions (ADAM) into a single 155mm artillery projectile. The munitions will have preset self-destruct times of either 4 hours or 48 hours. The combination of both antitank and antipersonnel munitions into a single artillery round results in a better dispersion of munitions on the ground and a more effective minefield. Firing only one type of round also reduces the logistics burden and the number of aiming points for the firing units.

The Area Denial Artillery Munition (ADAM)/ Remote Anti- Armor Mine (RAAM) Upgrade was renamed the Remote Area Denial Artillery Munition (RADAM). Items that received type classification approval during fiscal year 2001 included the M1023 Remote Area Denial Artillery Munition; M1024/M1025/M1026

Once the mine lands, it launches seven tripwires before arming itself. Any disturbance of the tripwires will trigger the mine. The mine is entirely electrically detonated, if the battery level of the mine drops below a pre-set level - the mine self-destructs. Even if the mine does not self-destruct, the battery will fully discharge after 14 days, rendering the mine inactive.

The mines contain a spherical warhead in a void that also contains 51 g of M10 liquid propellant. The void allows the propellant fluid to settle under gravity in the correct position beneath the warhead so that the warhead is always launched in an upward direction irrespective of the initial orientation of the mine.

Upon activation the spherical warhead is launched upward to a height of 1–2 m where it detonates, producing approximately 600 fragments travelling at a velocity of 900 m/s.
 
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K9A2 Thunder - Ukkonen olisi suomalainen nimi. Moukari ja Ukkonen, hyvä yhdistelmä.
The world’s favourite self-propelled howitzer has arrived in the United Kingdom, for the first time, ready to highlight its upgraded features. Hanwha Defense’s K9A2 self-propelled howitzer, an upgraded variant of the K9A1, will be on show at DVD at the UTAC Millbrook Proving Ground in Bedfordshire.
Pasi Pasivirta, Director of Business Development Europe for Hanwha Defense, said: “The expansion of the K9 user community increases interoperability benefits and brings greater through-life operating and upgrade efficiencies to members. Integration with NATO allies will be a force multiplier for the UK, as the adoption of common data standards, interoperable network systems and open architectures make it a critical enabler of multi-domain operations”.

The 155mm/52-calibre K9 Thunder is a proven tracked platform, allowing genuine, sustained 360-degree firing solutions, delivering consistent, accurate, rapid effects at +40km range with high rate and volumes of fire, including Multiple Round Simultaneous Impact (MRSI). The Thunder carries 48 rounds, far more rounds than many of its rivals, facilitating a significantly enhanced number of missions.

Being proposed for the Royal Artillery, K9A2 will be a real game changer. The British variant of the K9A2 will be equipped with the Composite Rubber Track, which will enable more rapid ‘in to’ and ‘out of' action, coupled with higher levels of tactical mobility and automation. The UK variant will be capable of firing up to 10 rounds per minute, with just three crewmembers.

Sun Wi, Director of Overseas Business Division and Programme Manager for MFP, Hanwha Defense, said: “The K9A2 will deliver opportunities for novel artillery employment and enables fast-moving, shoot and scoot operations, to enhance survivability and extend battlefield coverage. Alongside our Team Thunder partners, we will be demonstrating at DVD 2022 how the K9A2 platform is the most advanced and credible artillery system for MFP, offering a tried, tested and trusted solution. The key theme is to ensure that the K9A2 will feature proven capability and expertise from across the UK”.
 
Viimeksi muokattu:
Tuli mieleen siitä pitkän piipusta, missä luodin nopeus maksimoitui tietyn pituuden jälkeen. Onko sellaista testiä tehty 155mm putkella?
 
Some four dozen U.S. troops here are helping their Ukrainian counterparts across the border fix and maintain 155mm howitzers, Javelin launders, HIMARS and other weapons. But since the Americans aren’t in Ukraine, they’re providing assistance via encrypted digital chats, sending replacement parts, and consulting on parts the Ukrainians make themselves. It’s vital work at an airbase that could be among the first targets if Russia expands the war beyond Ukraine.

With the help of some Ukrainian linguists, the U.S. maintenance specialists communicate in 14 chatrooms, one for each weapon and system the Ukrainians need help with. The Ukrainians use Starlink satellite communication terminals to share video clips as needed.

“Ukrainians are going to identify a need, the experts are going to diagnose…what's needed and either walk them through it or put parts on order. And then we use the American supply system to get that part here to transfer right down,” said one lieutenant colonel involved in the effort. (Defense One is not allowed to publish the names of the personnel involved or the name of the base.)

Some of the needs are new even to the U.S. specialists. The Ukranians have been using long-range fires like howitzers much more heavily than the United States has used such weapons in decades.

“The wear and tear on these guns is something that we just weren't ready for because of the rates that [the Ukranians] are firing these rounds. Their dependency on that field artillery system is what's keeping them in this fight,” said the colonel. “When they're firing them in this way, you're seeing trends, you're seeing common faults. They haven't been tested in this manner…because they're just, these are not [firing] numbers that the product or the program managers even use to stress us.”
The Ukrainains have no a direct line to U.S. weapons manufacturers and there are no U.S. personnel in the country to order replacement parts or coordinate shipments, much to the frustration of some volunteers who have journeyed to Ukraine to assist in the war effort.

There’s “zero supply on a lot of things. And so … we're not stopping to try and solve those problems. Every single gun in the fight matters,” said the colonel.
 
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K9A2 Thunder - Ukkonen olisi suomalainen nimi. Moukari ja Ukkonen, hyvä yhdistelmä.

Oho! Eikös Pasivirta ollut ennen tykistön tarkastaja? Aika messevään virkaan on päässyt ja varmaan ansiostaan tuossa suomen hankinnassa.
 
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The Gun Laying and Navigation System (GLNS) is a standardized gyroscopic capability developed for integration into the South African artillery launchers, namely the 155mm GV5 and GV6 howitzers, and 127mm MRL Bateleur. The GLNS provides rapid and accurate navigation, fixation, orientation and laying capability to all current and future South African army artillery PME, excluding the 120mm M5 mortar. The system can also be adapted to old howitzers. This migrates from traditional stand-alone orientation systems into a single integrated system.

The GLNS provides the functional capability to support and guide the artillery crew for deployment. GLNS further provides deployment details to the Artillery Target Engagement System interface via the launcher state message ot txt message (the system provides dedicated COA deployment GLNS mode).

The product development phase has been concluded, giving room to the production phase for the South African artillery. Denel Land Systems (DLS) was contracted to execute the design development of the GLNS, and its subsequent production phase. The intellectual property rights of the GLNS design are fully owned by Armscor, with some background IP¨owned by Denel Group.
 
Oho! Eikös Pasivirta ollut ennen tykistön tarkastaja? Aika messevään virkaan on päässyt ja varmaan ansiostaan tuossa suomen hankinnassa.

Toivottavasti EI ansioistaan Suomen hankinnassa... Miehen ammattiosaamista on kyllä täälläkin kehuttu, eli en syytä korruptiosta sinänsä, siihen kun riittäisi vähemmänkin näkyvä konsulttipesti. Mutta maailmalla on surullisen yleistä, että hankintapäätösten tekijät löytävät itsensä myöhemmin... öhöm, valitun tuotteen valmistajan palkkalistoilta. :cautious:
 
Future Army missile crews may not be crews at all.

Or if they are, those crews will include fewer people, more robots and have their launchers spread out over vast distances with an array of new fires at their fingertips.

The future batteries could carry rockets that pull oxygen from the air mid-flight, track moving targets and deliver big booms or silent electronic attack.

These are some of the Army’s Combat Capabilities Development Command goals that Hunter Blackwell, an official with the command’s aviation and missile center, shared Monday at the National Defense Industrial Association’s annual Future Force Capabilities conference.

Blackwell laid out the priorities and challenges the Army missile community will face in the coming years.

Long-range precision fires have dominated recent modernization conversations, showing the service will lean heavily on its rockets and artillery in complex, cluttered and deadly future battles.
The most prominent, and so far promising system to get that done is the Army’s Precision Strike Missile program, under development by Lockheed Martin. The PrSM will replace the existing Army Tactical Missile System.

But the Army’s not simply building a bigger rocket with PrSM. As Defense News reported in 2021 during an early capability demonstration at Fort Sill, Oklahoma, developers expect systems such as PrSM to work in manned-unmanned teams.

That demonstration fired seven missiles from two rocket platforms, one manned, one unmanned, both offloaded from cargo planes to fire, and then loaded back on — simulating the quick setup, fire and takedown the Army needs.
Designers tackling the robot driver problem are working in the Autonomous Multi-Domain Launcher, or AML, program, Blackwell said.

Right now, they’re using the High Mobility Artillery Rocket System, or HIMARS, as the testbed for AML. By removing the cab and other items that support the human on the HIMARS, they add more space for, wait for it…more rockets.
Researchers are working the distance problem with solid rocket and alternate propulsion systems. Right now, nearly 80% of the fuel onboard the rocket is oxygen, Blackwell said. If they can successfully get the oxygen from the air en route to the target, that opens more space for more wicked effects inside the munition.
The Army also wants “multi-mode seeker technology,” according to Blackwell. That tech will give the PrSM the ability to hit mobile, high-priority land and maritime targets.
 
Toivottavasti EI ansioistaan Suomen hankinnassa... Miehen ammattiosaamista on kyllä täälläkin kehuttu, eli en syytä korruptiosta sinänsä, siihen kun riittäisi vähemmänkin näkyvä konsulttipesti. Mutta maailmalla on surullisen yleistä, että hankintapäätösten tekijät löytävät itsensä myöhemmin... öhöm, valitun tuotteen valmistajan palkkalistoilta. :cautious:
Vähän jokaisesta kotimaisestakin puolustusalan yrityksestä löytyy liuta evp-upseereja. Ihan luonnollinenkin valinta asiantuntijatehtäviin. Mukana voi olla korruptiota, mutta muitakin hyviä selityksiä löytyy.
 
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