PROCESS OF TAILORING VIBRATORY CHARACTERISTICS OF A COVER FOR AN OPEN BODY HOLLOW VANE ASSEMBLY, HOLLOW VANE ASSEMBLY AND PROCESS FOR MODIFYING A VIBRATORY CHARACTERISTIC OF A COVER TO AN OPEN BODY

A process of tailoring vibratory characteristics of a cover (64) for an open body (62) hollow vane assembly (60) comprises forming the open body, the open body including an interior (78), forming at least one cover support structure (66) in said open body proximate the interior, forming a cover (64), the cover being configured to attach to the open body to form at least one flow passage, forming at least one ply (94) in the cover (64) and brazing the cover to the open body. A hollow vane assembly comprises an open body including an interior, at least one cover support structure formed in said open body proximate the interior, a cover brazed to the open body to form at least one flow passage and at least one ply formed in the cover. A process for modifying a vibratory characteristic of a cover to an open body comprise forming an open body, the open body including a leading edge (80) opposite a trailing edge (82), the open body including a pressure side (86) and a suction side (84) opposite the pressure side, the open body including an interior, forming a cover, the cover being configured to couple with the open body proximate the pressure side to form at least one flow passage, forming at least one ply in the cover and attaching the cover to the open body.