Method For Balancing A Propulsive System Having Non-Hull Contra-Rotating Propellers

摘要

According to the invention, in order to eliminate or at least to reduce a possible unbalance of the propulsive system (1), counterweights (40, 50, 60, 70) are brought in locations that are provides on the hub envelope (22, 32), near the ends (22A, 22B, 32A, 32B) of the latter away from the planes od the propellers (B-B′, C-C′).