Talk:2S4 Tyulpan

Smart projectiles
I read in some sites that in 1980 decade, former Soviet Union used projectiles of this mortar guided by Laser.Perhaps today projectiles guided by GPS are available for this mortar.Agre22 (talk) 04:28, 25 September 2008 (UTC)agre22
 * Russian do not use GPS only GLONASS Gnomsovet (talk) 23:54, 26 February 2009 (UTC)

External links modified
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 * Added archive https://web.archive.org/web/20011209055848/http://www.aeronautics.ru/chechnya/021700.htm to http://www.aeronautics.ru/chechnya/021700.htm
 * Added archive https://web.archive.org/web/20060622045713/http://www.armscontrol.ru/atmtc/Arms_systems/Land/Artillery/Self_Propelled/2S4_SP_Mortar_Tulpan.htm to http://www.armscontrol.ru/atmtc/Arms_systems/Land/Artillery/Self_Propelled/2S4_SP_Mortar_Tulpan.htm

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Mortar?
Isn't the defining characteristic of a Mortar (weapon) the fact that its muzzle-loaded and doesn't have a Breechloader? So why is the Tyulpan classified as a mortar when it is breech-loaded? Mztourist (talk) 08:14, 10 January 2024 (UTC)
 * No. Yes, the "mortar" article states: "A mortar is usually (...) muzzle-loaded weapon". But it doesn´t have to be. The 2S4 ticks other boxes like "indirect fire only" and it has a light build, resulting in a low muzzle velocity, somewhat half of what contemporary artillery, like the M115, guns can develop. Alexpl (talk) 17:05, 10 January 2024 (UTC)
 * So it should be classified as a Gun-mortar then. Mztourist (talk) 06:11, 12 January 2024 (UTC)
 * No, the procedure to set it up is lengthy, making it vunerable. So it is usually placed further back where it doesn´t have direct line-of-sight to it´s target, like the smaller calibre gun-mortars are supposed to have. Alexpl (talk) 12:58, 15 January 2024 (UTC)
 * Another answer is that the Russian sources on the 2S4 refer to it as a mortar. Btw, like their towed M-240 mortar, the 2S4 has a base-plate to absorb the massive recoil. So unlike e.g. the 2S9, the tracked chassis of the 2S4 is there to move the barrel and base-plate (and facilitate the breech loading), not to absorb the recoil. Lklundin (talk) 13:17, 15 January 2024 (UTC)
 * Recoil absorbtion is a good point. That could explain why, for ex, the german 21 cm GrW 69 was designated as a mortar while also beeing a breechloader like the 2S4. Alexpl (talk) 08:30, 19 January 2024 (UTC)