ROBOTECH Technical Files
by Peter Walker and Pieter Thomassen, with Robert Morgenstern


Space Defense Robot SDR-04 Phalanx.

RDF Seal
Southern Cross Seal
REF Seal
Phalanx Space Defense Robot
Mecha Separator

I. Dimensions:

Total Height: 12.7m
Height: 11.3m (ground to searchlight)
Total Depth: 5.0m
Total Breadth: 7.5m
Weight: 22.2 metric tons (dry)
47.2 metric tons (fully loaded).

II. Type:

III. Service History:

IV. Propulsion:

Reserve Generator:
Thrusters for Space Maneuvering:

V. Performance:

VI. Electronics:

Radar System:
Optical tracking:
Tactical Electronic Warfare System (TEWS):

VII. Armament:

Phalanx - Rear View

VIII. Armor:

The armor on the Phalanx is composed of a standard Chobham laminar developed in the late 20th century and improved with the materials science advances made during the Robotech era. This armor was mainly designed to defeat projectiles and other kinetic weapons. The armor stops all small arms and heavy infantry weapons fire, provides excellent resistance to light mecha-mounted weaponry, such as the Zentraedi 22.3mm HE autocannon round, and fair resistance to medium mecha-mounted weaponry, such as the Valkyrie's 55mm APFSDS round.

The Phalanx 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:

The SDR-04 Phalanx missile launch battery is part of the main Destroid series used during the First Robotech War. This Destroid was designed to provide more mobility to the tactical missile launchers previously in use on Earth. This Destroid uses the same leg assembly as the MBR-04 Tomahawk heavy infantry mecha and ADR-04 Defender air defense mecha.

A missile-launching mecha was needed because of the vulnerability of fixed missile batteries. Therefore, the Phalanx torso was designed. It consisted out of nothing more than a missile-launch station and pilot seat, data-link equipment and two very large missile pods. These missile pods could carry 22 of the largest mecha-mounted each, which gave one Phalanx firepower comparable to the refitted Iowa-class battleships in service with the 1980s US Navy. The Phalanx usually fired its long range missiles from a position 20-100km away from the fighting, because this mecha had very little in the way of secondary armament and really only minimal armor. It could fire its missiles on a direct trajectory, but this would degrade its stand-off capabilities by using large LR missiles for what was essentially SR work. The Phalanx was developed on the SDF-1 in late 2009, and did not see service on Earth until after the Zentraedi holocaust. A variant, the Mark XIII, saw service with the RDF Army, and incorporated a pair of miniguns for emergency anti-personnel use.

The Destroids based on this undercarriage were among the most important mecha during the First Robotech War and the later Malcontent Uprisings through 2019, and the Mark XIV also saw action with the REF against the Invid, although this versions was refitted with more powerful weapon systems, and newer armor plating which gave more protection.

Addendum, REF upgrade:

(Phalanx mk XIV)

The armor was replaced with a thicker layer of low-mass Chobham, increasing the protection to levels similar to that on the Veritech Hover Tank at no cost in additional weight. Naturally, the electronics were all updated as well. The electronics upgrades are as follows:

Radar Tracking:
Optical Tracking:
Tactical Electronic Warfare System (TEWS):

See additional design notes.

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Robotech (R) is the property of Harmony Gold. This document is in no way intended to infringe upon their rights.

Content by Peter Walker and Pieter Thomassen, with Rob Morgenstern
HTML by Robert Morgenstern

Copyright © 1997, 1995 Robert Morgenstern, Peter Walker, Pieter Thomassen
Last Updated: Monday, November 17, 1997 2:02 PM