Date: Thu, 29 Jun 1995 14:55:07 +0300 (EET DST) From: Lahtinen Antti Jussi Subject: FFS: Gauss Weapons, Battery Error FFS: Gauss Weapons, Gauss Battery Error, Magazine Capacity After some fiddling with gauss weapon design rules, I decided to use separate components for autoloader and HPG in stead of a single "receiver" unit. This comes from the fact that a HPG can be placed anywhere in gun, but autoloader must be placed at the rear end of barrel. When separate components are used, the minimum length of weapon drops quite dramatically. I also noticed that gauss weapon batteries are incompatible with the batteries listed in page 66. For example, TL-14 gauss magazine battery is 14.4 times heavier than corresponding TL-14 storage battery. Using current rules the battery size may vary greatly when tech level and muzzle velocity is changed, but the maximum grip magazine capacity stays constant. I measured several modern handgun magazines, and made a simple volume-based formula that can be used with CPR and Gauss handguns. In the following design breakdown I have used separate autoloader and HPG, and used normal storage battery. ---------- Design example: TL-14 Gauss Pistol Projectile: 4x20mm Density 2 plastic dart Component Mass (g) Volume (cm3) Price (Cr) Projectile 0.5 0.25 0.01 Gun: Selective fire with 2500 m/s muzzle velocity Component Mass (kg) Length (cm) Price (Cr) Barrel 0.45 15 270 Autoloader 0.03 4 3 HPG 0.2 19 20 Hollow Grip 0.1 0 25 --------------- Gun Total 0.78 (kg) 19 (cm) 318 (Cr) Autoloader is designed as Mass Driver autoloader. Weight multipliers are: Semi Automatic 30 Fully Automatic 50 Selective Fire 60 Very Rapid Fire 100 The length of loader mechanism is twice the length of ammo. Autoloader is placed in the rear end of barrel, so the minimum length of weapon is the length of barrel, plus the length of autoloader. HPG values are taken from table in page 66. HPG could be placed anywhere, but in this design the HPG is over the barrel and autoloader. The HPG is cylinder shaped, and its diameter is 2.53 cm. Autoloader and HPG price is calculated as in page 103, using price multiplier of 100. 75-round Grip Magazine Component Mass (kg) Vol (cm3) Price (Cr) Magazine 0.0237 37.7 0.237 Battery 0.0520 20.8 1.875 Ammo 0.0375 (75 rounds) --------------- Magazine Total 0.1132 (kg) 58.5 (cm3) 2.112 (Cr) 0.0758 kg unloaded Magazine capacity depends on the total volume of magazine. The total volume of magazine is twice the volume of carried ammo, plus the volume of battery. The volume of modern grip magazine is around 60 cm3 in medium-frame pistols, and less than 30 cm3 in hideout guns. (22.5 cm3 in one palm-sized autoloader) This pistol is designed to be medium sized (as Glock 17), so the magazine volume can be up to 60 cm3. Battery is taken from battery table in page 66. To allow all fire rates up to 50 rounds/sec, a 0.36 second battery is selected (price multiplier 9). TL-14 battery volume in cm3 is calculated as: (req. energy [j] x number of rounds)/(2.5 [MWh/m3] x 3600 sec). Battery mass is 2.5 g/cm3, and price is Cr0.01/cm3. ---------- 4mm Gauss Pistol (Gp-25) Manufactured in Vyborg/Capella/Solomani Rim, the SAKO Gp-25 is high-power selective-fire gauss pistol used as sidearm by Vyborg police and military forces. The Gp-25 fires 4mm gauss darts at 2500 meters per second. To minimize autofire recoil, Gp-25 can fire 3-round autobursts in stead of normal fully automatic fire. Note: This weapon have the same dimensions as TL-8 Glock 17 autopistol. The major difference is that Gp-25 has barrel at the same place where Glock 17 has the recoil spring guide. TL-14 Ammo: 4x20mm/25 (density 2 plastic dart) Muzzle Energy: 1562.5 joules (required energy 2500 joules) Weapon Length: 19 cm Weapon Weight: 0.78 kg empty, with no magazine. 0.893 kg with full 75-round magazine Weapon Prize: Cr318 Magaz. Weight: 75-round magazine: 0.113 kg loaded, 0.076 kg empty Magaz. Price: Cr3 Ammo Prize: Cr0.01 (Dart), Cr0.02 (EDD, Tranq), Cr0.03 (HEAP) Ammo Weight: 0.5 grams per round Features: Optional TL-14 laser sight Round ROF Dam Pen Bulk Magaz Recoil S Range 4x20mm Dart SA/3 3 1-Nil 1 75 4/6 20 (20) 4x20mm EDD SA/3 4 3-Nil 1 75 4/6 20 4x20mm HEAP SA/3 4 2-2-2 1 75 4/6 15 4x20mm Tranq SA/3 -1* Nil 1 75 4/6 12 ---------- -- Antti Lahtinen : Justice is Only a Wish of a Weak al76188@cs.tut.fi :