So they are using some commercial software. I thought generally institutes make their own softwares for such simulations.
So they are using some commercial software. I thought generally institutes make their own softwares for such simulations.
For FEA/FEM softwares the most important thing is the availability of a data library. Data libraries are built with a large number of trial and error type experiments. The more data you have, more accurate your simulations become. With a reasonably large number of experiments(i.e. a large data library) and enough computing power, simulations can become extremely accurate. This is why commercial softwares are often preferred, as they have millions of users around the world and thus a huge data library.
Most commercial FEA/FEM softwares can be categorised as :
1. Student grade : I use them sometimes. Reasonably accurate very good for beginners. Used in small engineering projects, nothing major.
2. Intermediate/general research grade : For simulating various fluid fields and reference frames. Reasonably advanced software, used in more complex projects.
3. Industry grade : Highest grade available. Very industry specific(ex : automobile, marine etc.). Most military hardware can be designed using this.
Now if you find yourself doing a project that stretches beyond this(like designing ballistic missiles et al), you have to make your own software. Using our own software is always the last ditch as it can be expensive and might not give out satisfactory results.
For sensitive stuff people write their own codes. This is normal in any drdo equivalent institute worldwide. The problem with commercial softwares is not just its expensive.but often those softwares also double up as spy softwares.
I hope they make it in specs comparable or close to armata or take help from Russians if needed to get things done.
anything on APS?
That's always the downside to using commercial softwares. But its not insurmountable, for example all you have to do is to break up the whole system into a lot of small components then design the small components to be large and large components to be small. That's how we used to do it back in the day, it was effective as scale had little to do with fluid field interactions.
I doubt we will take any help from abroad. Ashhok Leyland is already designing clutches of the engine.
ARDE/TBRL has a APS program ongoing. There was also a IDEX challenge on it.
We already have off-route mines :
In due course of time this tech will morph into a APS. Some prototypes are ready and tested already :
The pic above states "with suitable detection system mounted on MBTs" or in other words we need to mount mini radars on tanks. This pic is a few years old :
The square mast on the T72 CIA is a Battlefield Surveillance Radar(BFSR). Now the BFSR might not be the best fit for this role, but its still a good radar mounting experiment.
The technologies for APS has existed with us for a while. Give it some time we will get there.
Is this APS capable of defeating or degrading APFSDS rounds? and how long before we see first tank prototype.
Yes.
Hard to say. The engine is arguably the most time consuming venture. The gun and its auto-loader is also quite complex. At least a year to go to anything physical.
The recoil mechanism I posted on the last page :
Here is a FEM image from a study called "Life estimation of hydro-spring type recoil system" :
Here is a FEM image from a study called "Life estimation of hydro-spring type recoil system" :
Arjun Hub comes up at Jaisalmer Military Station
TNN | Jan 11, 2020, 4:46 IST
Jaisalmer: For providing speedy and focused repair to vital assemblies of the indigenous Arjun main battle tank (MBT), Arjun Hub was inaugurated on Thursday at Jaisalmer Military Station by Lieutenant General V S Sreenivas, General Officer Commanding Konark Corps.
Army official sources said, “Arjun Hub at Jaisalmer Military Station was inaugurated on Thursday. There are regiments of Arjun Tank already in Jaisalmer. This initiative marks a significant step towards Indian Army’s effort to develop an all-encompassing and inclusive ecosystem to provide impetus to public-private partnerships towards enhancing operational availability of Arjun main battle tank.”
Battle Axe Division GOC Major General Rakesh Kapoor, DRDO scientists and many senior Army officers were present on the occasion.
Arjun Hub comes up at Jaisalmer Military Station | Jaipur News - Times of India
TNN | Jan 11, 2020, 4:46 IST
Jaisalmer: For providing speedy and focused repair to vital assemblies of the indigenous Arjun main battle tank (MBT), Arjun Hub was inaugurated on Thursday at Jaisalmer Military Station by Lieutenant General V S Sreenivas, General Officer Commanding Konark Corps.
Army official sources said, “Arjun Hub at Jaisalmer Military Station was inaugurated on Thursday. There are regiments of Arjun Tank already in Jaisalmer. This initiative marks a significant step towards Indian Army’s effort to develop an all-encompassing and inclusive ecosystem to provide impetus to public-private partnerships towards enhancing operational availability of Arjun main battle tank.”
Battle Axe Division GOC Major General Rakesh Kapoor, DRDO scientists and many senior Army officers were present on the occasion.
Arjun Hub comes up at Jaisalmer Military Station | Jaipur News - Times of India
Arjun MBT Driving Simulators developed by CVRDE-DRDO. It helps to meet the various levels of training required to familiarize the Arjun MBT gunner, commander and driver on hardware controls and switches present in their respective compartment and also a cost effective way.
Army set to place order for 118 Arjun Mark 1-As, the most potent tank in its inventory
The Mark 1-A, developed by DRDO, features 14 major improvements sought by the Army, including better firepower and new transmission systems.
By SNEHESH ALEX PHILIP
16 March, 2020; 7:30 am IST
The Mark 1-A features 14 improvements over the Arjun main battle tank (pictured here) | Photo: PIB via Wikipedia
New Delhi: After numerous delays and extensive trials, the Indian Army is set to finally place an order for 118 indigenously manufactured Arjun Mark 1-A ‘Hunter Killers’, which will have all-weather capability and better fire power and stability than the Arjun main battle tank (MBT).
Army sources told ThePrint that the Mark 1-A, which weighs 68 tonnes and features a 120mm main gun, has cleared all tests, and that cost negotiations with its developer, the Defence Research and Development Organisation (DRDO), are complete. The sources added that the Army has pushed the file to place the order, which will be done “soon”.
The move comes as a big boost for the Chennai-based Combat Vehicles Research and Development Establishment (CVRDE), a DRDO lab.
The major improvements
“The tank comes with 14 major improvements that the Army has sought, which will make it the most potent and self-protective tank in the Army’s inventory,” V. Balamurugan, director of the CVRDE, told ThePrint.
Balamurugan said the first tank will be rolled out from the factory within 30 months of the order of intent (the technical term used for the order) being placed.
He explained that four upgrades were made to the firepower of the tank, besides other developments, including new transmission systems.
The Mark 1-A includes an improved gunner’s main sight, integrated with automatic target tracking. This would enable the tank crew to track moving targets automatically, and engage them even when Arjun is on the move.
The Arjun Mk-1A’s gun is controlled by a computerised integrated fire control system, giving the tank has a high first round kill capability. The gun’s day-and-night stabilised sights, coupled with automatic target tracker, guarantee accurate engagement even in dynamic conditions, a senior DRDO official told ThePrint.
Other than the conventional fin stabilised armour piercing discarding sabot and high explosive squash head ammunition, the Mark 1-A comes with thermo baric and penetration-cum-blast ammunition.
The Arjun saga
The Arjun MBT project was initiated in the mid-1970s, but the first two regiments of the tank were inducted into the Army starting 2004. Even then, they have never been used to their optimal capability because of a variety of reasons — including excess weight, issues with certain parts, and availability of spare parts.
The Arjun MBT had performed better than Russian T-90s during a desert trial conducted by the Army in 2010. However, reliability and availability weighed on the Army’s mind. The force argued that weight of the MBT, 62.5 tonnes, was a handicap as it meant that Arjun was too heavy for roads, bridges and canals along the Pakistan border.
The Army, in 2010, proposed an improved version of the tank, which would be called the Mark II, and was to have over 80 improvements, including 15 major ones.
However, this also meant that weight would increase further.
Cannon-launched guided missiles
In 2012, the DRDO offered the Arjun for trials with all the major enhancements, except one — a cannon-launched guided missile (CLGM).
The Army had insisted on having that capability, since other tanks like the T-90 also had it.
The DRDO roped in the Israelis and sourced the Lahat CLGM, which could conclusively hit targets between two and five kilometres away. The trials validated the CLGM’s laser designator.
However, the Army wanted a missile that could hit targets as close as close as 1.2 km, Balamurugan said.
He added that the Israelis took about a year to decide on producing it, but by then, the DRDO had decided to go in for an indigenous CLGM.
Talks between the DRDO and the Army continued until March 2018, and it was finally agreed that the next batch of Arjuns, to be called Mark 1-A, would be supplied without the missile firing capability.
“The process for building that (CLGM) is already on, and could actually be integrated on the Mark 1-A as they start rolling out,” Balamurugan said.
As far as weight is concerned, he said that though the Mark 1-A weighs more, it has been designed in such a way that pressure exerted at specific points is much lower.
Army set to place order for 118 Arjun Mark 1-As, the most potent tank in its inventory
The Mark 1-A, developed by DRDO, features 14 major improvements sought by the Army, including better firepower and new transmission systems.
By SNEHESH ALEX PHILIP
16 March, 2020; 7:30 am IST
The Mark 1-A features 14 improvements over the Arjun main battle tank (pictured here) | Photo: PIB via Wikipedia
New Delhi: After numerous delays and extensive trials, the Indian Army is set to finally place an order for 118 indigenously manufactured Arjun Mark 1-A ‘Hunter Killers’, which will have all-weather capability and better fire power and stability than the Arjun main battle tank (MBT).
Army sources told ThePrint that the Mark 1-A, which weighs 68 tonnes and features a 120mm main gun, has cleared all tests, and that cost negotiations with its developer, the Defence Research and Development Organisation (DRDO), are complete. The sources added that the Army has pushed the file to place the order, which will be done “soon”.
The move comes as a big boost for the Chennai-based Combat Vehicles Research and Development Establishment (CVRDE), a DRDO lab.
The major improvements
“The tank comes with 14 major improvements that the Army has sought, which will make it the most potent and self-protective tank in the Army’s inventory,” V. Balamurugan, director of the CVRDE, told ThePrint.
Balamurugan said the first tank will be rolled out from the factory within 30 months of the order of intent (the technical term used for the order) being placed.
He explained that four upgrades were made to the firepower of the tank, besides other developments, including new transmission systems.
The Mark 1-A includes an improved gunner’s main sight, integrated with automatic target tracking. This would enable the tank crew to track moving targets automatically, and engage them even when Arjun is on the move.
The Arjun Mk-1A’s gun is controlled by a computerised integrated fire control system, giving the tank has a high first round kill capability. The gun’s day-and-night stabilised sights, coupled with automatic target tracker, guarantee accurate engagement even in dynamic conditions, a senior DRDO official told ThePrint.
Other than the conventional fin stabilised armour piercing discarding sabot and high explosive squash head ammunition, the Mark 1-A comes with thermo baric and penetration-cum-blast ammunition.
The Arjun saga
The Arjun MBT project was initiated in the mid-1970s, but the first two regiments of the tank were inducted into the Army starting 2004. Even then, they have never been used to their optimal capability because of a variety of reasons — including excess weight, issues with certain parts, and availability of spare parts.
The Arjun MBT had performed better than Russian T-90s during a desert trial conducted by the Army in 2010. However, reliability and availability weighed on the Army’s mind. The force argued that weight of the MBT, 62.5 tonnes, was a handicap as it meant that Arjun was too heavy for roads, bridges and canals along the Pakistan border.
The Army, in 2010, proposed an improved version of the tank, which would be called the Mark II, and was to have over 80 improvements, including 15 major ones.
However, this also meant that weight would increase further.
Cannon-launched guided missiles
In 2012, the DRDO offered the Arjun for trials with all the major enhancements, except one — a cannon-launched guided missile (CLGM).
The Army had insisted on having that capability, since other tanks like the T-90 also had it.
The DRDO roped in the Israelis and sourced the Lahat CLGM, which could conclusively hit targets between two and five kilometres away. The trials validated the CLGM’s laser designator.
However, the Army wanted a missile that could hit targets as close as close as 1.2 km, Balamurugan said.
He added that the Israelis took about a year to decide on producing it, but by then, the DRDO had decided to go in for an indigenous CLGM.
Talks between the DRDO and the Army continued until March 2018, and it was finally agreed that the next batch of Arjuns, to be called Mark 1-A, would be supplied without the missile firing capability.
“The process for building that (CLGM) is already on, and could actually be integrated on the Mark 1-A as they start rolling out,” Balamurugan said.
As far as weight is concerned, he said that though the Mark 1-A weighs more, it has been designed in such a way that pressure exerted at specific points is much lower.
Army set to place order for 118 Arjun Mark 1-As, the most potent tank in its inventory