That is length of the barrel. 155x45=6975mm & 155x52=8060mm.
39/45/52 these are calibers. Multiplying the caliber value with the bore diameter gives you the length of the barrel. Length is directly proportional to range attained and inversely proportional to portability.
I thought caliber means the bore dia as in .303.
But here caliber is used to denote barrel length right??
And any specific reason values like 155mm , 45/52 , 130mm are used and not say 150mm etc?
For small arms yes. Caliber is often used to refer to bore dia. Not very accurate way of describing it though. For example a 12.7x99 mm NATO bullet and a 12.7x108 mm Soviet bullet has the same dia but the Soviet round is longer. Thus using "12.7mm" to describe the round might cause some confusions. So instead of 12.7x99 mm NATO, people just call it .50 cal.
For large guns. Artillety, howitzers, Naval main guns, tank gun etc.
The british system of using inch to define the diameter of the barrel was used world over. But later USA and USSR changed to define them in mm.
Given the successes of the DRDO/ARDE/OFB and various private companies especially the Bharat Forge and TATA I think it would be the right time to start building a naval main gun. We can't be importing it all. Anything between 127-155 mm would do. We ought to start a project immediately and not let the expertise gathered from the ATAGS and various other projects go to waste.
From BRF :
It seems the upgraded Sharang needs a pit to be dug, to allow the breech sufficient room to travel for the recoil when firing at a high angle. Jugaad has its limits.
ULH by Bharat Forge is ready.
It seems the upgraded Sharang needs a pit to be dug, to allow the breech sufficient room to travel for the recoil when firing at a high angle. Jugaad has its limits.
ULH by Bharat Forge is ready.
5
It wont take six men lot of time to dig such a pit , the benefits of longer range and bigger shell is more important
It wont take six men lot of time to dig such a pit , the benefits of longer range and bigger shell is more important
This gun was not a howitzer in its original avatar. It has been converted to one post upgrade and therefore the clearance for recoil travel is not sufficient.
From what I gather the project is in its very early days. Don't count them out already. The requirement for ER rounds and GPS guided rounds are huge and can only be effective if they are domestically developed and produced. Imports will be ridiculously expensive, one of the USP of artillery is that its cheap. Take that away and its not very effective. We will need to develop these rounds on our own sooner or later. Let Defexpo come, let's see what we can find.
That sucks. I'd have loved to see the concept they're working with.
This is our developmental 155mm ramjet shell, test fired by NAMMO. Range 150km+.
As of December, 2019 150 test firings have been conducted.
NAMMO is also in the process of developing a ramjet powered a2a missile with a range of up to 400km.
P_K on DFI :
Kalyani motorised self propelled howitzer .
Calibre seems to be 155x39 mm.
Kalyani motorised self propelled howitzer .
Calibre seems to be 155x39 mm.