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RGM-91 Refined Gundam Zeta Mass Production Mobile Suit (RGM-91A, -91B)

I. Dimensions:

II. Type

• Design: Anaheim Electronics
• Builders: Anaheim Electronics
• One man, all weather, standard production mobile suit.

III. Service Use

• RGM-91A: Served with the RDF Space Marines and Marines from 2060 until replaced by the RGM-91B.
• RGM-91B: Served with the RDF Space Marines and Marines from 2064 and is still in service.

IV. Propulsion

Engines:

(RGM-91A)

• 4 x Icarus Aerospace AST-42 thrusters on the lower back in pairs, total thrust 108 kN each.
• 2 x Icarus Aerospace AST-44 thrusters on the wing binders, total thrust 140 kN each.
• 2 x Rolls Royce FF-10 high-thrust vernier thrusters, located on the heels, total thrust 46.3 kN each.
• Assorted small reaction thrusters and gyroscopes for all-environment maneuvers, attitude adjustment, and stability.

(RGM-91B)

• 2 x Icarus Aerospace AST-51 thrusters on the wing binders, total thrust 185 kN each.
• 4 x Icarus Aerospace AST-42 thrusters on the lower back in pairs, total thrust 108 kN each.
• 2 x Rolls Royce FF-10 high-thrust vernier thrusters, located on the heels, total thrust 46.3 kN each.
• Assorted small reaction thrusters and gyroscopes for all-environment maneuvers, attitude adjustment, and stability.

Powerplant:

(RGM-91A)

• 1 x RRD-5 Miniaturized Fusion-cell energizer providing electrical power to the mecha. Total output, 5000 kW each.

(RGM-91B)

• 1 x RRD-8 Miniaturized Fusion-cell energizer providing electrical power to the mecha. Total output, 6800 kW each.

Fuel Capacity:

(RGM-91A)

• 12 standard canisters of reaction mass
• 346.8 liters D2O reactant for fusion engines.

(RGM-91B)

• 14 standard canisters of reaction mass
• 357.1 liters D2O reactant for fusion engines.

V. Performance

VI. Electronics

Radar tracking:

(RGM-91A)

• Hughes AN/APG-187 X-Band, pulse Doppler, providing long range detection and tracking of targets at all altitudes.
• Westinghouse GN/TPG-260 medium range UWB phased array pulse-Doppler, for detection and tracking of targets, and with battlefield surveillance modes.
• Westinghouse AN/APX-20 IFF friend or foe interrogator.

(RGM-91B)

• General Electric AN/APG-189 X-Band, pulse Doppler, providing long range detection and tracking of targets at all altitudes.
• Westinghouse GN/TPG-305 medium range UWB phased array pulse-Doppler, for detection and tracking of targets, and with battlefield surveillance modes.
• Westinghouse AN/APX-20 IFF friend or foe interrogator.

Optical tracking:

(RGM-91A)

• Phillips AN/DOS-4700 multi-band digital camera system, for medium range, traversable, UV, infrared imaging and optical band detection and tracking.
• Thomson AN/LT-10 multi-frequency laser ranger and designator.

(RGM-91B)

• Phillips AN/DOS-5400 multi-band digital camera system, for medium range, traversable, UV, infrared imaging and optical band detection and tracking.
• Thomson AN/LT-12 multi-frequency laser ranger and designator.

Tactical Electronic Warfare System (TEWS):

(RGM-91A)

• Loral AN/ALR-40 Radar Warning Receiver (RWR)
• Loral AN/AIR-28 Infra-red Warning Receiver (IRWR)
• General Electric AN/ALQ-293(V) active sensor jammer
• Westinghouse AN/AMJ-8 active missile jammers
• Tracor AN/ALE-16 Chaff and flare dispenser
• Multiple VHF and UHF antennas
• Bose Loudspeakers producing sound up to 90 decibels.

(RGM-91B)

• Westinghouse AN/ALR-48 Radar Warning Receiver (RWR)
• General Electric AN/AIR-34 Infra-red Warning Receiver (IRWR)
• Kowalczyk AN/ALQ-300(V) active sensor jammer
• Westinghouse AN/AMJ-12 active missile jammers
• Tracor AN/ALE-16 Chaff and flare dispenser
• Multiple VHF and UHF antennas
• Bose Loudspeakers producing sound up to 90 decibels.

VII. Armament

Cannons

(RGM-91A)

• 2 x Smith & Wesson 60mm autocannons: Mounted on either side of the head of the mobile suit, the 60mm cannons provide anti-personnel firepower as well as a close range alternative to its other more powerful weapons.  Each cannon can fire at 600 rounds per minute with a 1000 round belt feed.  Ammunition is the standard mix of of Tungsten-coated depleted Uranium Armor Piercing Spin-Stabilized Discarding Sabot (APSSDS), High Explosive Armor Piercing (HEAP) and tracer rounds.

(RGM-91B)

• 2 x Smith & Wesson 60mm autocannons: Mounted on either side of the head of the mobile suit, the 60mm cannons provide anti-personnel firepower as well as a close range alternative to its other more powerful weapons.  Each cannon can fire at 600 rounds per minute with a 1000 round belt feed.  Ammunition is the standard mix of of Tungsten-coated depleted Uranium Armor Piercing Spin-Stabilized Discarding Sabot (APSSDS), High Explosive Armor Piercing (HEAP) and tracer rounds.
• 2 x Krupp TC-12 tachyon cannons: This much more robust version of the tachyon rifle designed to be able to punch through most any type of armor and give a longer range attack ability to the mobile suit.  The cannons are mounted on either shoulder when firing and can be placed on the back when not in use.  Each cannon can fire a 200 MJ burst every three seconds at a range of up to 50 km.

Hand Held Weapon

• 1 x Rheinmetall BR-15 tachyon rifle: After several more years of refinement the tachyon rifle became both easier to manufacture and maintain as well as cheaper.  This lead to the first mass deployment for the RDF of tachyon weaponry in 2055 with the RGM-85 Nemo. The rifle represents the main weapon of the Jegan and while less powerful than platoon leader models, still packs a good punch.  The rifle can fire 60 rounds per minute in full automatic mode at approximately one shot per second. This weapon fires 350 MJ pulses, with its own dedicated cell and capacitor banks in the 'magazine' with two spare magazines mounted behind the projectile shield each with a payload of 18 shots. 
• or 1 x Raytheon 6-tube missile launcher: The ability to carry surgical strikes is important to the RGM-91 and to complete this task it has a six tube medium range missile launcher.  This launcher built by Raytheon can hold up to twelve medium range missiles of any kind, though usually the MPM-25 Saber is used.  The missile launcher has six missiles ready to fire with one set of reloads.
• or 1 x Three Star RU-38 360mm missile launcher: When conducting heavy assault hit and run raids the ReGZ uses this large missile launcher, a successor to the   RU-35.  The launcher is designed to use a new variant of the MPM-23 similar to the old MPM-10D.  The MPM-23C is the same size as the MPM-10D, but has a longer range and higher top speed.  When not in use this weapon can be placed on a special mount on the back of the unit freeing the hands for other uses such as wielding the tachyon saber or a projectile shield.  The RU-38 uses an external magazine with seven rounds plus one in the chamber.  The mobile suit can reload the RU-38 in the field using and extra magazine stored on the projectile shield of the mobile suit holding seven rounds. 

• or 1 x Three Star 180mm electromagnetic rail cannon: When the ReGZ needs long range firepower against a variety of targets, the choice is the 180mm rail cannon.  This cannon packs quite a punch and is very versatile earning it the moniker '180mm anti-everything cannon'.  The cannon fires a 110 kg shell distances of up to 10 km with excellent accuracy thanks to self guided shells. The available ammunition consists of KCP Kinetic Core Penetrating (hull penetration rounds), KPI Kinetic Penetrating Incendiary (plasma incendiary rounds) and MKEP Multiple Kinetic Energy Penetrator (flechette cluster rounds), the latter as anti-mecha formation weapons.  The cannon carries seven shells internally in a large magazine.  One spare magazine is usually mounted under the projectile shield, however reloading this large and cumbersome weapon takes several times as long as reloading any other type of weapon, usually around twenty to thirty seconds.

• 1 x Hughes ML-05 tachyon cannon: This cannon is a smaller version of the cannon seen on most capital ships.  As such it is quite large and packs a powerful punch.  The weapon can fire once every minute with a force of 3 GJ.  The weapon does have its drawbacks.  The first is its slow rate of fire.  Also the cannon can only operate for ten minutes before needing to be shutdown for cooling.  However, this cannon is capable of severely damaging small capital ships and even damaging larger ones.  The weapon is stored behind the back when not in use and is physically mated to the mobile suit.  The cannon can be placed on the back when not in use allowing the RGM-91 to use other hand held weapons.

Beam Saber

(RGM-91A)

• 2 x Shinara 0.7 MW tachyon beam saber: These revolutionary mecha-sized melee weapon were first used on the Gundam mobile suit. The beam saber only contains enough energy and particles for about 60 seconds of continuous use. When not in use, the beam sabers are stored in the forearm of the mecha, where they are recharged by the RGM-91's reactor. The RGM-91 can switch the beam saber on and off while holding it, in order to conserve power. Once totally depleted it takes 30 minutes for a beam saber to recharge to full capacity. The RGM-91 carries two beam sabers mounted on its backpack.

(RGM-91B)

• 2 x Shinara 0.9 MW tachyon beam saber/ tachyon cannon: A unique weapon which serves a dual function as both beam cannon and beam saber.  The beam saber only contains enough energy and tachyons for about 60 seconds of continuous use. When not in use, the tachyon sabers are stored in the forearm of the mecha, where they are recharged by the reactor. The tachyon cannon is therefore hooked into the reactor as well and can draw its energy from there giving it infinite ammunition.  The cannon is rather weak however and only fires a 150 MJ burst every three seconds at a range of up to 10 km.  The ReGZ Custom carries two of these unique weapons one in each forearm.

Missiles

(RGM-91A)

• 1 x RGZIDMMS-1 ReGZ Integral Dagger Multi-Missile System: 16 inboard variable warhead, MPM-23 Dagger high maneuverability mini missiles. Launch ports are two 2-tube launchers located on the hips and two 2-tube launchers located on the wrists. 2 missiles ready per launcher with one reload. Various warhead options.
• 1 x MM-9 Multi-Missile System: 9 inboard variable warhead, MPM-20 Pike short range infra-red imager passive radar homing missiles. Launch port is one 3-tube launcher located on the projectile shield. 3 missiles ready, with two reloads. Various warhead options.

(RGM-91B)

• 1 x RGZIDMMS-2 ReGZ Integral Dagger Multi-Missile System: 12 inboard variable warhead, MPM-23 Dagger high maneuverability mini missiles. Launch ports are two 3-tube launchers located on the hips. 3 missiles ready per launcher with one reload. Various warhead options.
• 1 x MM-9 Multi-Missile System: 9 inboard variable warhead, MPM-20 Pike short range infra-red imager passive radar homing missiles. Launch port is one 3-tube launcher located on the projectile shield. 3 missiles ready, with two reloads. Various warhead options.

VIII. Armor

The armor on the RGM-91 is a low-mass lunarium tungsten composite plating that is the standard for most Terran mecha. Aside from the good protection provided against projectiles, missiles, and other kinetic weapons, this armor is also resistant to plasma globes (annihilation discs), lasers, and fair against, particle guns too, owing to the fact that the armor can flake off and evaporate in layers under fire from such high-energy weapons, taking much of the weapon's energy and converting it into the latent heat of sublimation in the armor. The armor stops all small arms fire, and has good resistance to all weapons commonly mounted on combat mecha.

The ReGZ provides full protection from nuclear, biological, and chemical hazards, using an overpressure cockpit environment activated by radiation and hazardous chemical sensors, or manually when biological warfare conditions are anticipated. The internal consumables supplies can provide atmosphere for three days maximum.

IX. Development

Layout adapted from Robotech Reference Guide

Content by Jeffrey R. Spillner and Ron Ferrara
Copyright © 1998-2001 Jeffrey R. Spillner, Ron Ferrara

Page Last Updated on December 7, 2001 @ 00:00 GMT