Multi-engine aircraft power and propulsion systems 100 and methods 300 of starting the engines 110a, 110b of multi-engine aircraft 1 are provided. One such method 300 comprises: supplying electrical power from an electrical power source 130 to one or more electric machines 111a, 112aof the a first gas turbine engine 110a and operating said one or more electric machines 111a, 112a as motors to drive rotation of one or more spools 14, 19, 26; 15, 17, 27 of the first gas turbine engine 110a; starting the first gas turbine engine 110a by lighting combustion equipment 16 of the first gas turbine engine 110a; operating one or more of the electric machines 111a, 112a of the first gas turbine engine 110a as generators to extract mechanical power and generate electrical power from one or more spools 14, 19, 26; 15, 17, 27 of the first gas turbine engine 110a; transferring, via an electrical system 120, electrical power generated by the one or more electric machines 111a, 112a of the first gas turbine engine 110a to one or more electric machines 111b, 112b of a second gas turbine 110b engine and operating said one or more electric machines 111b, 112b as motors to drive rotation of one or more spools 14, 19, 26; 15, 17, 27 of the second gas turbine engine 110b; and starting the second gas turbine engine 110b by lighting combustion equipment 16 of the second gas turbine engine 110b.


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    Title :

    Starting gas turbine engines


    Contributors:

    Publication date :

    2024-04-03


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F02C Gasturbinenanlagen , GAS-TURBINE PLANTS / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT



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