Orbiting combustion nozzle engine

F - Mech Eng,Light,Heat,Weapons – 02 – C

Patent

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Details

F02C 3/14 (2006.01) F02C 3/34 (2006.01) F02C 7/18 (2006.01)

Patent

CA 2490488

An orbiting combustor nozzle (OCN) engine, having a rotating assembly comprising a co-rotating compressor and nozzle wheel enclosed within a non- rotating outer casing, defining a rotating combustion chamber, is disclosed. Combustion occurs in the combustion chamber in a vortex of gas that rotates at the same angular velocity as the rotating assembly. Also disclosed, is a method of cooling a blade of a rotating wheel, such as a turbine wheel or nozzle wheel, by projecting cool air at the base of the vane from a nozzle corotating with the blade. Such cooling is easily implemented in an OCN engine with use of an innovative annular combustor. Also disclosed is a method of countering axial backflow by use of a combustion chamber compressor.

L'invention concerne un moteur à buse orbitale de combustion (OCN), présentant un ensemble de rotation comprenant un compresseur co-rotatif et une roue de buse placée dans un logement extérieur non rotatif, définissant une chambre de combustion rotative. La combustion se produit dans la chambre de combustion dans un tourbillon gazeux tournant à la même vitesse angulaire que l'ensemble de rotation. L'invention concerne également un procédé de refroidissement d'une lame d'une roue rotative, par exemple une roue de turbine ou une roue de buse, par projection d'air froid au niveau de la base de l'aube à partir d'une buse en co-rotation avec la lame. Ce refroidissement est facilement mis en oeuvre dans un moteur OCN dans lequel est utilisée une chambre de combustion annulaire innovatrice. L'invention concerne en outre un procédé visant à contrer le flux de retour axial par utilisation d'un compresseur de chambre de combustion.

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