The spacecraft of the eldar are, like their ground-based vehicles, fast, agile, well-armed, and incredibly advanced in design, but also very fragile. They are notable or their use of solar sail technology; riding the solar wind, eldar craft can move very quickly with minimal fuel expenditure. However, this means that they have some difficulty flying in the opposite direction, toward the local star.
Bombers are small craft carried by larger ships; during a naval engagement, their role is to fly out and deliver devastating payloads against large enemy capital ships or installations. Eldar bombers are equipped with holographic distortion technology that makes them difficult to track and attack.
(Source: intermaterium, via entertheblacklibrary)
