Multilayer shielding ring for a flight driving mechanism

Abstract

A shielding ( 6 ) of a turbine housing ( 3 ) of an aircraft engine against radial escape of blade fragments, especially for a high-speed low-pressure turbine, is characterized in that the shielding ( 6 ) is embodied as a rigid ring-shaped component of several layers ( 8 ). Through the decoupling of the containment function from the design of the turbine exhaust gas channel, which is fabricated as a cast part, the disadvantages of the prior art are avoided. Particularly, the design of the turbine exhaust gas channel can be carried out in a cost- and weight-optimized manner.

1 . Shielding ( 6 ) of a turbine housing ( 3 ) of an aircraft engine against radial escape of blade fragments, especially for a high-speed low-pressure turbine ( 1 ), characterized in that the shielding ( 6 ) is embodied as a rigid ring-shaped component of several layers ( 8 ). 
   
   
       2 . Shielding ( 6 ) according to patent  claim 1 , characterized in that the shielding is arranged on the turbine exhaust gas channel. 
   
   
       3 . Shielding ( 6 ) according to patent  claim 1 , characterized in that the shielding ( 6 ) is embodied as a forged component. 
   
   
       4 . Shielding ( 6 ) according to patent  claim 1 , characterized in that the shielding ( 6 ) is arranged within the turbine housing ( 3 ). 
   
   
       5 . Shielding ( 6 ) according to patent  claim 1 , characterized in that the shielding ( 6 ) is embodied as a flow guiding element. 
   
   
       6 . Shielding ( 6 ) according to patent  claim 1 , characterized in that the shielding ( 6 ) is embodied as a heat shield. 
   
   
       7 . Shielding ( 6 ) according to patent  claim 1 , characterized in that the layers ( 8 ) are made of different materials. 
   
   
       8 . Shielding ( 6 ) according to patent  claim 1 , characterized in that the layers ( 8 ) comprise different thicknesses and/or numbers. 
   
   
       9 - 10 . (canceled) 
   
   
       11 . Shielding ( 6 ) according to patent  claim 1 , characterized in that the layers ( 8 ) are tuned to one another in a vibration-optimized manner. 
   
   
       12 . Shielding ( 6 ) according to patent  claim 1 , characterized in that the shielding ( 6 ) comprises a mounting frame ( 7 ) for different functional layers.