ROBOTECH Technical Files
by Pieter Thomassen


Roil Tiluvo class assault corvette
Roil Quel class electronic warfare corvette
Roil Luhoutzs class command corvette
Roil Lihinal class gunboat
Roil Destrin class assault corvette
Roil Tiluvosen class assault corvette
Listradin class light orbital transport

Robotech Masters
Assault Corvette
Naval Separator

Names and disposition:

Vessel's Complement:

(Roil Tiluvo):
(Roil Quel):
(Roil Luhoutzs):
(Roil Lihinal):
(Roil Destrin):
(Roil Tiluvosen):



(All except Destrin and Tiluvosen versions):
(Destrin and Tiluvosen versions):

Propulsion systems:

Endurance and mobility limits:

(All versions but the Destrin, Tiluvosen and Listradin):
(Destrin and Tiluvosen versions):
(Listradin version):

(All versions):
Assault Carrier firing Ion cannons

Weapon systems:

(All except Listradin):
(Tiluvo, Quel, Destrin, Tiluvosen only):
(Tiluvosen only):
(Luhoutzs only):
(Lihinal only):


Air group and mecha complement:

(Roil Tiluvo):
(Roil Luhoutzs):
(Roil Quel, Roil Lihinal, Listradin):
(Roil Destrin):
(Roil Tiluvosen):

Design notes:

Assault Carrier

The Assault Corvette is a streamlined, rocket and anti-gravity propelled transorbital atmosphere/space combat vehicle.

The rear part of the body is vaguely rectangular shaped, with the smallest dimensions in the vertical, narrowing to the front, forming a prow. Mounted here the forward landing skid, which, like the other skids, is shaped in a manner reminiscent of a claw. Aft under the hull are the two main skids. In the sides of the lower aft section, pointing rearwards in normal flight mode, are the two vectorable exhausts of the main reaction engines. As versions intended for Zentraedi troops and mecha, the Destrin and the Tiluvosen featured a higher main hull. To compensate, the hull carried less armour, and the mass (and thus engine specifications) remained the same.

All other details differ per version. The Listradin, for example, was an unarmed version intended as a civilian transport. As such, it carried no weapons. All versions save for the Tiluvosen were flown by micronian pilots from the cockpit section, which was located in an upper blister. This blister was lengthened aft, protruding over much of the dorsal hull, and usually housed electronics. The Tiluvosen flight crew was located in its body, and the blister on that version was converted into a capacious missile bay.

All armed versions were equipped with two forward and two aft particle cannons, and with a rotary close-in defence turret under the hull. The Tiluvo, Quel, Destrin and Tiluvosen variants mounted four additional particle cannons in the hull, the Luhoutzs version mounted six additional cannons. The main armament of the Lihinal version was mounted in four cannons, visually identical to and mounted in the positions of the more standard particle cannon. However, these weapons were rail cannons for anti-matter pellets. The troop carrying versions (Tiluvo, Luhoutzs, Destrin and Tiluvosen) had two large release doors in the sides aft.

The interiors of all craft have four deck levels. The only version differing in more than detail is the Tiluvosen. As a solely Zentraedi vehicle, this version carried its flight crew in the main body and a missile battery in the top blister. All other versions had their flight deck on top of the vessel, Immediately under the upper hull is a floor with medical facilities, crew rest rooms and other mission related rooms. Below this is the main mecha hangar, with enough room, if needed, for 26 Bioroids and their hoversleds in the micronian versions and 22 Zentraedi mecha in the Zentraedi versions. Underneath the hangar is a floor with access to the anti-gravity engines and several micronian sized storage rooms.


In the late 1800's, the Bioroid troop carriers used by the Tirolian forces were in design and function closely related to the Frandlar Tiluvo transports of the Zentraedi fleets. The vessels were during operations escorted by the Rauliras fighter craft, at that time the pinnacle of Tirolian aerospace combat design. The first design proposal involved an updated carrier, but this was rejected fairly early in the design effort. Rather than using a dedicated fighter, it was intended that an assault corvette would carry armaments as well as Bioroid troops. This rather revolutionary decision was made after computer modeling showed that a large, armed troop transport would be more than capable of defeating aerial mecha, while remaining fully operational itself. If succesfull, in time this might render the aerospace and atmosphere fighter craft obsolescent.

The Masters then took the idea one step further. If the transport were to be equipped with enough firepower to enable it to overwhelm small spaceships (with Rudel-tactics if need be) then the entire army could be made up from just two main designs: the Bioroid and the Assault Corvette. This would significantly ease manufacturing and maintenance. This approach was chosen, and the Tirolian Assault Corvette was designed to fit this role. This it did magnificently. The Assault Corvette exceeded all the expectations its designers had of it, and set new standards for transports in the Robotech militaries. By the year 1938, all relevant Tirolian forces were equipped with the Roil Tiluvo. Consequently, several different versions were designed as well on the basis of the original corvette.

The first variant was the Roil Quel, an electronic warfare craft that had its mecha bay converted into an electronics hold, and mounted numerous phased array antenna all over its hull. The next two versions were the Luhoutzs, which carried additional command personnel and equipment in exchange for a large part of its troop capability, and the Lihinal bombardment variant. Two versions were designed for use by the Zentraedi. The Destrin version was intended for the Border Fleets, but due to several economic restraints, only the Tou Salaam cruisers were equipped to handle them. Although they were designed to transport Zentraedi troop, they retained the micronian flight crew. The Destrin featured an heightened main hull, to accommodate the large Zentraedi mecha. As the final military variant, the Tiluvosen was designed to complement the Frandlar Tiluvo re-entry pods. The cargo capacity of the Tiluvosen was far less than that of the re-entry pod, but the Tiluvosen was very heavily armed with guns and missiles. The tactical concept was to make the first landings with the corvettes, and to leave the heavy cargo lifting to the larger ships. This way, the Zentraedi could make assault landings with the armed and armoured corvettes in a manner which was impossible with the large but vulnerable and unarmed re-entry pod. However, this version as well as the final version, the civilian Listradin, never moved beyond the prototype stage.

During the Second Robotech war the Southern Cross forces often encountered this vehicle in four of its versions, either in space or on the planet itself. Always it proved to be as maneuverable and more powerful and resilient than the mecha and planes of the SC air and aerospace forces. The corvette has a legitimate claim to more kills of mecha and spacecraft than any other vehicle in the Second Robotech war, since it was used for every role the Bioroids were too small for but full destroyers too heavy, from ground strafing runs (the largest flying vehicle ever to do this) to orbital combat.

The REF made a serious attempt to adopt the Assault Corvette as its own standard dropship. However, different priorities and technical difficulties made this impossible, and at the time of the assault on Reflex Point only five of the Dragon-class corvettes, as the ships were known, were completed and conducting test flights on Tirol. The Dragon-class entered full scale production shortly after the war, and equips most of the orbital transport flights of both the Terran and Tirloian navies.

See additional design notes.

Return to Tirolian Naval Craft Index

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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 Pieter Thomassen, with Rob Morgenstern
HTML by Robert Morgenstern (
Copyright © 2006, 1999, 1997 Robert Morgenstern, Pieter Thomassen, Peter Walker