Mass Driver Guns

Date: Wed, 15 Mar 1995 20:33:29 +0200 (EET)
From: Lahtinen Antti Jussi <al76188@cs.tut.fi>
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 :