Patent ID: 7404286

Claim:
An engine, comprising: a. a rotating assembly including a primary compressor, an inner casing and a compressor-driving nozzle wheel; b. an outer casing, enclosing said rotating assembly; and c. a substantially annular flame holder encircling said inner casing within said combustion chamber; so that at least one combustion chamber is defined in the space between said primary compressor, said inner casing, said compressor-driving nozzle wheel and said outer casing, characterized in that said outer casing does not rotate with said rotating assembly; and wherein the engine further comprises: d. a substantially tubular element surrounding said inner casing, wherein a leading edge of said tubular element is positioned aft of said primary compressor so as to divide airflow from said primary compressor into only an outer airflow and an inner airflow, wherein said outer airflow is only between said tubular element and said outer casing and wherein said inner airflow is only between said tubular element and said inner casing.