T-90's dont fire Indian rounds yet. The Russians asked for extra cash to integrate the same. I haven't seen any report about IA saying yes for that.This is for a long time known and discussed matter. Indian firms made bad ammo and it is caused barrel bursting.
Arjun has had a very complicated history.It started out as a geinune IA requirement to handle desert terrian,as the british and french tanks within IA had severe drawbacks within this envirnoment.Why? Indian Army surely knows where and how to employ tanks - why not have them write the requirements for the manufacture to allow the employment of these essential assets where and when they need them.
n21 why was it discovered on operational deployment that crews were passing out? This occurred on Indian soil presumably, so why weren't the vehicles and crews tested in this enviroment before the deployment? Has there been remedial action taken on this issue since? (retrofit of airconditioning systems/fans/shade devices?)
Read my post carefully, I stated quality control, which does include proper packing of projectiles and propellants for shipping and storage, transporting to the field. Fixed casing ammunition in fact can with stand high ambient temperatures better that two part ammunition, this has not always been the case though, we found out with the M829 combustable casing that when it was prone to high ambient temperatures that it was prone to swelling causing the casing to get stuck part way into the tube, we ended up redesigning it with better casing properties. British Challenger 2 also has had issues with the propellant L14A2 used to propel Charms 2 and 3, this in fact contributed to Challengers 2 dismal performance when tested by the Greek military authorities, they could not hit most of the targets engaged for the live fire demonstration, culprit being propellant casing exposed to high ambient temperatures.Sure, if you let shells be stored for 1 or 2 years NOT in proper, cool storage - everything can happen. But what it have to do with quality of the tank or ammo? How this is different from any other tank or ammo in the world?
Some of the systems can drain away at least 10% of your power when it is operational, maybe even more. They also suck when it comes to fuel milage.:AC steals too much engine power?
I have really no idea how much a normal AC is actual worth in hp but I don't expect it to be that much.
Does anybody here with some engineering experience an idea?
as a matter of fact the the arjun,s tracks are lot wider than that of the t-90 thus it has a groung pressure of 0.84 tonnes while the t-90 has a ground preasure of 0.90 tonnes..........this allows arjun to move more easily on loose sand and marshy areas.Very interesting in-regards to the barrel bursting issue`s, could be a issue of T-90`s two part ammunition, propellant charge can be very unpredictable during extreme hot ambient temperatures, this is one of the same issues faced with the Challenger 2`s propellant charge.
Inregards to Arjuns weight if it has a wide foot path then the ground pressure could be comparable to the T-90`s, thus not making it a issue when crossing terrian or bridges.
hey ,nooooo. u hav got it wrong. importing tanks from russia is not not a new thing, we can do it anytime . the arjun must be offering some cool advantages over the t-90 thats why the research is still going on otherwise the trials wud hav been over long back.Nope, it is completely other way around. T-90S "must offer some promising benefits over" Arjun - or else the trials would of been over a long time ago, India is not dumb and there is more to this story than we will likely ever know". Remember, it is Arjun tank which is pride of Indian DRDO, not T-90S. By all things equal, India will always choose Arjun.
hey ,nooooo. u hav got it wrong. importing tanks from russia is not not a new thing, we can do it anytime . the arjun must be offering some cool advantages over the t-90 thats why the research is still going on otherwise the trials wud hav been over long back.
its not a question of national pride ... and india is not tht dumb.
t-90 is like a quick and timely ANTIBIOTIC pill while the arjun is a VACCINE...it will prove a godsent in the long run.
also, i saw a doccumentary on history channel about ww2 tank battles and cold war, and there is something tht caught my attention.its a minor thing but still important.
experts say tht the russuian tanks are mainly offensive with more emphasis on mobility and firepower.....more addept at exploiting a breakthrough than creating one..
whereas the western tanks predominantly plca more emphasis on firepower and protection.....more adept at making a breakthrough in enemy lines than following..
so the indian army does not have to choose between arjun and t-90 as many ppl around here think.... they just hav to keep a good mix of both types of tank..
@actual: I'm not sure what you're trying to ask. India can not replace their Arjuns with anything as the Arjun is not in service yet. And also India is extremely unlikely to consider the procurement of the Leopard 2 instead of the Arjun. They have developed the Arjun because they want an indigenious tank, not because because they want a "Western style"-tank to augment their T-series fleet.
But your two big rotors (fans) are cooling down with outside air, as for a Air conditioner you are using a motor and compressor to move cool thermastatic set air. Some of these devices can also be spliced into a APU.10%?
I know that the two big rotors cooling the 1500hp MTU in the Leo 2 actually need roughly 200hp to cool your engine down (7,5%). I would think that an AC for your crew compartement would need a lot less than these big monsters and not just roughly 2,5%.
Pakistan hasn`t surpassed India in tank technologies, you just threw that one out there, can you back that up with some facts please.DavidDCM: I'm talking about India stopping the Arjun. How long has India tried to produce a modern MBT and waisted millions?
And what have they produced? A bad early-mark Leopard-2 cloan that Pakistan has far suppassed!
Awful result.
Nevertheless moving these rotors needs alot of energy.But your two big rotors (fans) are cooling down with outside air, as for a Air conditioner you are using a motor and compressor to move cool thermastatic set air. Some of these devices can also be spliced into a APU.
Usual AC for electronic or inner space dont take much - probably around 10kw at most. The things which cool engine is a whole another matter - they can take a lot. 7.5 % or even 15%.10%?
I know that the two big rotors cooling the 1500hp MTU in the Leo 2 actually need roughly 200hp to cool your engine down (7,5%). I would think that an AC for your crew compartement would need a lot less than these big monsters and not just roughly 2,5%.
Yes, i just pointed out what most likely wrong shipping/storage conditions is a Indian's side fault. Although 2-part ammunitions might (or might not) worsen the issue of course.Read my post carefully, I stated quality control, which does include proper packing of projectiles and propellants for shipping and storage, transporting to the field. Fixed casing ammunition in fact can with stand high ambient temperatures better that two part ammunition, this has not always been the case though, we found out with the M829 combustable casing that when it was prone to high ambient temperatures that it was prone to swelling causing the casing to get stuck part way into the tube, we ended up redesigning it with better casing properties. British Challenger 2 also has had issues with the propellant L14A2 used to propel Charms 2 and 3, this in fact contributed to Challengers 2 dismal performance when tested by the Greek military authorities, they could not hit most of the targets engaged for the live fire demonstration, culprit being propellant casing exposed to high ambient temperatures.