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At prototype stage, every item is hand tested. A battery of tests. During initial batches of production too. Once production quality mean is established and standard deviation ranges established, periodic sampling is done. Later it moves to random sampling. That is why initial production...

At 6:06 he says the first time the gun was fired was in December 2011.

Different categories. M777 is ULH, F-77 B02 is not.

Approx 12 tons for the FH-77 B02 (Dhanush)

Re: DRDO 155mm Artillery Program Ordnance Factory Board Ordnance Factory Board

Re: DRDO 155mm Artillery Program Let me give you 1 example: Distance from Siliguri base at Sevok forrest to the Gurudongmar lake border = 230Km. Road travel time = 12-14Hrs. Air travel time (helo) = 40min. That's why we need heleborne artillery for the mountains.

Re: DRDO 155mm Artillery Program Only the ordnance weighs 3020 kg (barrel+breech assembly). Add to that the APU, trailer, recoil absorber, gun cradle with rammer, electronics, seats, crane, road wheels & suspension, elevation & traverse gear and all other stuff and the entire system weighs more...

Re: Army to Induct Bofors based 155 mm 'Dhanush' gun Sir, do we have/are we looking for Excalibur? They cost approx US$75,000 per shell!

:D The smaller sabot came up when I did a more detailed drawing. The first one was just a free hand sketch, hence not very accurate. I have no way of communicating with OFB or DRDO... Maybe @Decklander can help with his contacts. :( I am not on any other forum except DFI... So if you could do...

@Kunal Biswas @Decklander @ladder @pmaitra @DivineHeretic @ersakthivel @sayareakd @Twinblade @p2prada This is a better representation of my idea: Looks like Bofors also had a similar idea! My solution was a a fixed base with a sabot, Bofors' idea is an...

IMHO the cost of (A spindle shaped dumb shell + a metal sabot) should be far less than a base-bleed shell. A base bleed shell contains less explosives than a dumb shell as the shell of a base bleed round sacrifices some space to accommodate the gas generator. The gas generator in the base...

That was for muzzle loaded cannons where the cannonball made of soft metal expanded and created a Hermetic seal for the expanding gasses, thus 1) prevented the cannonball to bounce around as it exits the barrel and 2) allowed the full force of the expanding gas to be utilized to push out the...

Hope I am able to explain the fluid dynamics of the expanding gasses better with this diagram. With the sabot, the barrel and the expanding gasses would act the same way it acts on a normal artillery shell. However without the sabot, and due to the aerodynamic nature of the base of the...

Yeah, but the issue of the spreading of pressure due to the larger surface area, thereby lower energy transfer to the shell, would still remain. Not to mention the multiple vectors in which the pressure would act because of the shape of the shell base inside the barrel, which would not happen...

Without the sabot, the pressure of the expanding fluid gas would get distributed to the entire 'U' shaped lower half, which would result in inefficient transfer of kinetic energy to the shell, due to more surface area and the shape. A sabot being a solid object, the base with lower surface area...

If you are talking about tumbling effect, that can be overcome by 2 things: 1) shells are anyway always nose heavy to mantain its ballistic dynamics. 2) Micro Rifling the shell to make it move through the air like the Americal Football. Cost wise it should be similar to the 'dumb' shells...

Can anyone explain something to me? AFAIK, when a shell is fired, a powerful source of drag is the vacuum left behind the shell due to its blunt base, which reduces its range. Base bleed is one way to reduce this drag, but a small loss of accuracy happens due to the somewhat more turbulent...

Desi Bofors to plug gap in Army’s long-range firepower - Times Of India NEW DELHI: The desi version of the original Swedish 155mm Bofors howitzers, which proved its worth by wreaking havoc against Pakistani intruders during the 1999 Kargil conflict, is now all set to plug huge...