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

Claim 3:
4. The gas turbine engine of claim 1, wherein the rotor assembly is operable at a second blade passing frequency (f2) during a low power operating condition, wherein the heat transfer section is a first heat transfer section and the acoustic length is a first acoustic length, wherein the heat exchanger further comprises a second heat transfer section defining a second acoustic length (Li,2), wherein, sin
  ⁢
  
    
  
  ⁢
  
    
      (
      
        
          
            2
            ×
            π
            ×
            
              f
              2
            
          
          
            a
            2
          
        
        ×
        
          L
          
            i
            ,
            2
          
        
      
      )
    
    2
  

is greater than or equal to 0.75, and a2 is equal to 12,900 inches per second during the low power operating condition.