Commonwealth Aeronautics "Blue Steel" BlueSteel is a small parts mod which adds several parts inspired by the British Avro Z101 Blue Steel concept, designed in 1961. The mod also includes parts to make the Avro 730 / 731 Spyplane concept, planned to replace V-Bomber ~1957. Parts included in the mod are balanced against those in the stock game and should provide a generous and enjoyable experience. For a more realistic profile, playing with a 2 - 3x system rescale is recommended. Some a