Date: Wed, 15 Mar 1995 20:33:29 +0200 (EET) From: Lahtinen Antti Jussi Subject: Mass Driver Guns Mass Driver Designs I do not think that there is anything wrong with the mass driver projectile weight formula, if you consider the material the round is made of. If the MD projectile has the same shape as Gauss projectile (l/w ratio 5), the weigth formula [Mp = (pi * r^3)/10] shows that the projectile is made of density 10 material. According to this, the projectile is a finned dart made of Crystal Iron or Iron jacketed Superdense, and will treated as APFSDSxx ammunition. (penetration multiplier 4.5 or higher) (Actually, the first MD guns in TL-8 would use DU penetrators with ferromagnetic jackets or sabots. However, the maximum muzzle velocity is 3000 m/s at TL-8, and conventional CRP guns can usually outperform any MD guns at this Tech Level.) ---------- TL-14 2cm Mass Driver Auto Cannon (Vehicle Mounted) Ammo: 2x10cm MD Muzzle Energy: 5.652 Mj, Required Energy 9.0432 Mj Required Power: 45.126 MW to fire 5-round bursts (25 rounds/5 seconds) Weapon Volume: 0.568m3 Weapon Weight: 930kg Weapon Price: Cr527777 Magaz Weight: 3kg empty, 317kg loaded Magaz Price: Cr18 (holds 1000 rounds) Ammo Price: Cr10.99 (CI), 12.56 (SD), 14.13 (BSD) Ammo Weigth: 0.314kg per round (2x10cm density 10 cylinder) Features: EMS Range Finder (3km short range), TL-14 Ballsitic Computer (ignore 5 Diff Mods) Round Type ROF DamVal PenVal Magaz SRange IDR 2cm MD CI-10 5 158 205-178-151-98 1000 1610m 34km 2cm MD SD-12 5 158 228-198-168-109 1000 1610m 34km 2cm MD BSD-14 5 158 273-237-201-130 1000 1610m 34km Note: While this is the smallest possible MD autocannon in TL-14, the BSD projectiles have enough penetration to knock holes in the "Intrepid" grav tank front armor. ---------- Desing Beakdown: Compenent Volume (m3) Mass (ton) Price (MCr) Gun 0.080 0.080 0.004,000 AC loader 0.016 0.016 0.000,157 HPG 0.362 0.724 0.003,620 EMS RF 0.080 0.080 0.020,000 Ballistic Comp 0.030 0.030 0.500,000 --------------------------------------------------------- Gun Total 0.568 0.930 0.527,777 Compenent Volume (m3) Mass (ton) Price (MCr) Magazine 0.063 0.003 0.000,018 Ammo Load 0.314 0.010,990 --------------------------------------------------------- Magazine Total 0.063 0.317 0.011,008 Note: 20x100mm gauss rifle rounds are made of density 2 plastic, and weigth only 63 grams. Thus 20x100mm/60 gauss rifle would have a muzzle energy of 1.13 Mj, and have less damage and penetration than 2cm MD. Round Type DamVal PenRtg SRange 20x100/60 Dart 71 2-2-2 300 (1702) -- Antti Lahtinen : Justice is Only a Wish of a Weak al76188@cs.tut.fi :