Free-riding oil tube damper

In a gas turbine engine, a turbine frame accessory tube damper system, comprising:

• a fluid carrying tube fixedly coupled between two points on said engine;
• mounting means coupled to said tube;
• a free-riding frictional damper coupled through said mounting means to said tube;
• wherein said free-riding damper comprises a damper arm dynamically mounted within a damper housing;
• further wherein said damper arm comprises a first arm in a first plane for mounting to said tube and second and third arms for bushing support in substantially parallel planes transverse to the plane of said first arm, for supporting first and second bushings respectively within said damper housing.

A tube damper for damping tube vibration in a tube fixedly mounted between two fixed locations in a gas turbine engine, said damper being mounted to a portion of a frame of the gas turbine engine, said damper comprising:

• a damper arm, including a mounting finger for attaching to the tube;
• a damper housing mounted to the engine frame;
• said damper arm having first and second rearward extensions for insertion within a damper housing;
• first and second wear bushings fitted to said first and and second rearward extensions;
• bias means disposed between said rearward extensions and said associated bushings for applying axially opposite force to said bushings for developing frictional contact between said bushings and said damper housing for developing coulomb dampening forces between said damper arm and damper housing;
• said damper housing being configured for permitting free-floating motion of said damper arm within said damper housing.