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Mass Effect 2 Codex Database: Entry Details
Helios Thruster Module
Category: Ships and Vehicles
Type: Secondary
Installation: Base Installation
Intended for next-generation fighter craft, the Heed Industries Helios Thrustle Module propulsion system far outpaces the typical hydrogen/liquid oxygen reactors that powers a frigate's maneuvering thrusters. By using metastable metallic hydrogen, the Helios boasts a fuel that burns at far greater efficiency than liquid H2/O2. Navigators can execute the numerous small course corrections inherent to any long-distance travel without fear of exhausting the ship's fuel supplies. This net gain extends to forward impulse as well: a ship powered by antiprotons can coast temporarily using the Helios to reach an inferior but highly sustainable speed. Such efficiency lowers antiproton consumption, a constant concern for any warship.

When a Helio-propelled ship must refuel, however, it typically relies on a large carrier or nearby planetary factory to synthesize the metallic hydrogen. This process uses extremely dense mass effect fields to create the metal under pressures of over a million Earth atmospheres, an activity most safely done while planetside. While the process may seem like a drawback compared to "skimmer ships" that can gather hydrogen and oxygen from anywhere in the universe, the combat superiority of the Helio's maneuvering capabilities is often a worthwhile tradeoff. The same efficiency that allows for microburn course correction can power rapid bursts of motion. Once a pilot becomes used to the ship's new energetic responses, she can easily put the ship wherever and at whatever angle she desires.
Obtained:
• Normandy (Deck 2) - Received after researching the Extended Fuel Cells