Talk:Jaivana Cannon

Corrections
"Eight people and one elephant were also reportedly killed by the shock wave and many houses collapsed in Jaipur" I have removed the above sentence, as first of all Jaipur was yet to be built at the time which the Jaivana was casts. Apart from that despite of all the myth, the Jaivana has actually been subjected to review by historians/military historians. According to R.S. Khangarot and Praptap Singh Nathawat '''It is proved beyond doubt that the cannon was fired more than once. The cannons which are never fired have a very smooth bore. But it is not so in the case of Jaivana. The barrel has markes inside, which occur after each fire. The recoil of the Jaivana would not have been more than four feet. That this cannon required space as big as a football field to fire becaue if its recould is only a (another) myth''.Maharaj Devraj 12:29, 19 June 2007 (UTC)

Range estimations
''The true range of this cannon is likely shorter than even the lowest guesses given. to give an idea of scale, the Iowa class battleship's main armament fires a 16 inch, aerodynamically shaped, 1 ton projectile out of a modern rifled barrel, and reaches a maximum range of 38 kilometers. The idea that a round iron ball propelled by crude black powder could attain greater range is laughable.'' — Preceding unsigned comment added by 70.70.136.240 (talk • contribs) in a revision from September 2007.

Please note that the projectile of the Iowa class battleship is 1 ton (1,000 KGs) as you say, while the Iron ball is only 50 KGs, there is a substantial difference there. For this reason I will remove your presumptuous opinions. Visit Jaigarth yourself and perhaps proper scientific calculations could be performed through some kind of simulation program. Maharaj Devraj 12:23, 12 October 2007 (UTC)


 * Actually, the mass has little effect on the range of a projectile, contrary to what our intuition might suggest. In fact, it might even be better to use a heavier projectile: "[besides shape and surface,] Mass also becomes important, as a more massive projectile will have more kinetic energy, and will thus be less affected by air resistance." So the main issue is whether the gains from decreased air resistance could balance out (or even outperform) the potential initial velocity handicap (it's probably harder to set a high velocity to a heavy object, but this particular topic needs more comparative research). -- Jokes Free4Me (talk) 11:20, 17 January 2012 (UTC)


 * Those range estimations are totally ridiculous. There's no way this thing could have had a range beyond a few hundred meters at most. It's not as easy as just math in a direct comparison to modern weapons. Only a 10 year old would claim that. At the time of its creation they could not have possessed adequate metallurgical knowledge, nor the kinds of explosives needed to achieve that kind of range. Just try to find a verified example of a similarly old gun that fired that far. Large guns are a precise science. Pre 20'th century guns had no hope of shooting that far. GMRE (talk) 20:03, 4 November 2014 (UTC)

Some estimate of the range of the gun may be gained from the known range of comparable pieces. The Russian 11" coastal gun M1867 was a black powder piece with approximately the same barrel length as the Jaivana gun, 11 calibres. It fired a 225 kg (c. 500 lb.) shell to 5330 metres (c. 3.3 miles). A solid iron ball of 11" caliber has a volume of c. 11.5 litres and weighs c. 90.5 kg (200 lb.). While a lighter shot would attain a faster initial speed with the same powder charge, the aerodynamically less efficient shape would slow the shot down faster, and we do not know how high chamber pressures the Jaivana cannon could withstand. The diameter of the Jaivana gun's barrel at the breech is c. 90 cm (35"), clearly less than the 120 cm (47") of the Russian cannon, so the maximum pressure would have been less, but the lighter shot would have compensated for this. The Jaivana cannon would certainly be able to shoot farther than a few hundred meters, but probably not farther than 5000 metres or, say, 3 miles. As a rule, guns of this size were siege pieces used for battering down fortress walls at ranges of a few hundred yards, but their actual maximum range would have by necessity been greater because the ball needed to have enough momentum (=speed) to actually have an effect on the masonry once it got there. Incidentally, the weight of the barrel (as calculated from its volume) should be c. 22 tons if it is of iron or c. 24.4 tons if it is of gunmetal, compared to 26 tons for the Russian gun. This would mean that more than half of the given 50 ton weight of the piece is in the carriage.--Death Bredon (talk) 22:10, 8 April 2016 (UTC)

Cleanup/Notability questioned
I question this article's notability. It fails WP:GNG and probably needs to be merged to Jaigarh Fort where it has its own section. And a quick look at google books shows hardly anything besides passing mentions...I can only confirm the fact that it was the largest canon after my search. This is a good red flag for me to question whether any proper historical sources have even bothered with this topic beyond that. Then it definitely does not deserve its own article. Ugog Nizdast (talk) 20:02, 25 November 2018 (UTC)

On the range of the cannon
''From work done by Dr.A.R.Collins on the ballistics of smooth bore cannons and historical data of cannon ranges and muzzle velocities, plus taking into account the likely inferior quality of the non-corned black powder propellant of the period, the highest probably muzzle velocity would be around 1500 to 1700 feet/second. This would give a maximum ballistic range of around 5000 yards to 3 miles.''

The work cited here does not provide any estimate of the muzzle velocity. It is a scientific article that provides a range of a cannon provided its firing capability. The article nowhere mentions Jaivana cannon, it's muzzle velocity, and the quality of the non-corned black powder. Without any citations, this claim is erroneous and should be removed. --Shubhams123 (talk) 10:26, 17 March 2021 (UTC)

Largest cannon is upli buruz in Bijapur about 30ft plz check it
Go to it plz 103.215.237.69 (talk) 10:54, 13 November 2022 (UTC)