A gas turbine engine assembly includes a core engine (20) that includes a core flow path where a core airflow (25) is compressed in a compressor section (24), communicated to a combustor section (56), mixed with fuel and ignited to generate an exhaust gas ...

The method involves providing turbo engines (02,03) for compressing and/or decompressing the compressed air. The turbo engine is made to communicate with a pressure accumulator (04) for temporarily storing the compressed air. A heat reservoir (05) is provi...