Path: spln!lex!extra.newsguy.com!lotsanews.com!news.maxwell.syr.edu!news-out.visi.com!hermes.visi.com!gemini.tycho.net.POSTED!not-for-mail Approved: sci-military-moderated@retro.com Return-Path: news@nyheter.chalmers.se Delivery-Date: Sat May 26 16:43:29 2001 Delivery-Date: Sat, 26 May 2001 16:43:25 -0700 for <sci-military-moderated@retro.com>; Sat, 26 May 2001 16:43:24 -0700 (PDT) id 153nUx-00059l-00 for sci-military-moderated@moderators.isc.org; Sun, 27 May 2001 01:29:31 +0200 for sci-military-moderated@moderators.isc.org; Sun, 27 May 2001 01:21:20 +0200 (MET DST) To: sci-military-moderated@moderators.isc.org From: Mats Persson <m95perm@mtek.chalmers.se> Newsgroups: sci.military.moderated Subject: Re: Question on trajectory etc Date: Sun, 27 May 2001 01:21:20 +0200 Organization: Chalmers University of Technology Message-ID: <3B103A70.2DF2C334@mtek.chalmers.se> References: <3AFCBAAF.33DC39F9@hotmail.com> X-NNTP-Posting-Host: doc17.mvd.chalmers.se Content-type: text/plain; charset=iso-8859-1 X-Complaints-To: abuse@chalmers.se X-NNTP-Posting-Date: 26 May 2001 23:21:20 GMT X-Mailer: Mozilla 4.06 [en] (X11; I; SunOS 5.6 sun4u) Content-Length: 754 Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by gw.retro.com id QAA13184 Lines: 26 NNTP-Posting-Host: 84cdce40.newsreader.tycho.net X-Trace: 991269526 gemini.tycho.net 321 205.179.181.194 X-Complaints-To: abuse@tycho.net Xref: spln sci.military.moderated:37314 Daniel Kekäläinen wrote: > > What is the height that a 155mm howitzer round will rise to when firing > 30km? What velocity does a 155m round have in mps? Weight of 155mm > round? > How long does it take for one such round to impact once it is fired? > (Time to target....) Don't know about modern howitzers. This is the figures for the Bofors 15,5cm FH77 (Haubits 77) using the standard HE-shell (sgr m/77) weight 42,6kg and charge number 6 (lng 6). Muzzle velocity; 755m/s Range; 16km Max altitude; 2300m Range; 18km Max altitude; 3477m Range; 20km Max altitude; 5346m Range; 20,8km Max altitude; 7001m The time of flight is about one minute at 20km. Mats Persson m95perm@mtek.chalmers.se http://www.mtek.chalmers.se/~m95perm/