Deflector exhaust nozzle for as350/ec130 and for other single engine helicopters

Abstract

A method of fitting a single engine helicopter having a tail boom to avoid exhaust gases at the tail boom, the single engine helicopter comprising a longitudinally centrally positioned single engine and a corresponding symmetrically positioned exhaust manifold and symmetrically positioned rear tail boom, and the method includes securing to the exhaust manifold a curved and bent deflector exhaust nozzle, the deflector exhaust nozzle configured to receive exhaust from the single engine and direct the exhaust gases away from the tail boom. A single engine helicopter includes a longitudinally centrally positioned single engine and a corresponding symmetrically positioned exhaust manifold and a symmetrically positioned rear tail boom, the helicopter having a curved and bent deflector exhaust nozzle secured to the manifold, the deflector exhaust nozzle configured to receive exhaust gases from the single engine and direct the exhaust away from the tail boom.

1 . A method of fitting a single engine helicopter having a tail boom to avoid exhaust gases at the tail boom, the single engine helicopter comprising a longitudinally centrally positioned single engine and a corresponding symmetrically positioned exhaust manifold and symmetrically positioned rear tail boom, the method comprising:
 securing to the exhaust manifold a curved and bent deflector exhaust nozzle, the deflector exhaust nozzle configured to receive exhaust from the single engine and direct the exhaust gases away from the tail boom.   
     
     
         2 . The method of  claim 1  wherein the curved and bent deflector exhaust nozzle is a left-hand or right-hand bent deflector nozzle, each configured for one engine of a twin-engine helicopter. 
     
     
         3 . The method of  claim 1  wherein the curved and bent deflector exhaust nozzle introduces an asymmetrical feature to the single engine helicopter. 
     
     
         4 . The method of  claim 3  wherein the asymmetrical feature is uncompensated for in the single engine helicopter. 
     
     
         5 . The method of  claim 1  wherein the tail boom is unprotected by a heat-shield. 
     
     
         6 . A single engine helicopter comprising a longitudinally centrally positioned single engine and a corresponding symmetrically positioned exhaust manifold and a symmetrically positioned rear tail boom, the helicopter comprising:
 a curved and bent deflector exhaust nozzle secured to the manifold, the deflector exhaust nozzle configured to receive exhaust gases from the single engine and direct the exhaust away from the tail boom.   
     
     
         7 . The helicopter of  claim 6  wherein the curved and bent deflector exhaust nozzle is a left-hand or right-hand bent deflector nozzle, each configured for one engine of a twin-engine helicopter. 
     
     
         8 . The helicopter of  claim 6  wherein the curved and bent deflector exhaust nozzle introduces an asymmetrical feature to the single engine helicopter. 
     
     
         9 . The helicopter of  claim 8  wherein the asymmetrical feature is uncompensated for in the single engine helicopter. 
     
     
         10 . The helicopter of  claim 6  wherein the tail boom is unprotected by a heat-shield.