Patent ID: 11927134
Assignee: GENERAL ELECTRIC COMPANY
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 5:
6. The gas turbine engine of claim 4, wherein the rotor assembly is operable at a third blade passing frequency (f3) during a medium power operating condition, wherein the heat exchanger further comprises a third heat transfer section defining a third acoustic length (Li,3), wherein, sin
  ⁢
  
    
  
  ⁢
  
    
      (
      
        
          
            2
            ×
            π
            ×
            
              f
              3
            
          
          
            a
            3
          
        
        ×
        
          L
          
            i
            ,
            3
          
        
      
      )
    
    2
  

is greater than or equal to 0.75, and a3 is equal to 11,640 inches per second during the medium power operating condition.