Drive for main engine auxiliaries for an aircraft gas turbine en

Details Drive for main engine auxiliaries for an aircraft gas turbine en Drive for main engine auxiliaries for an aircraft gas turbine en

1992-06-15

1994-02-15

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

60 3907, 60 39183, F02C 608

Patent

active

052856267

ABSTRACT:
A drive system for auxiliaries associated with a main gas turbine engine. The system includes auxiliary turbines for pneumatically driving the auxiliaries which are in turn divided into groups. A high pressure supply is tapped from the main engine or starter system and fed to the intakes of the respective auxiliary turbines. Controllers are associated with each of the auxiliary turbines to independently control the speeds of those turbines. Thus, the auxiliaries can be segregated between a group which is essential for starting the main engine, and a non-essential group. The former group is driven during starting while the latter group remains quiescent. Alternatively, the auxiliaries can be divided into one group mechanically coupled to the main engine and at least one other group driven by at least one auxiliary turbine.

REFERENCES:
patent: 2612020 (1952-09-01), Griffith
patent: 2692476 (1954-10-01), Schaal et al.
patent: 2767562 (1956-10-01), Hall
patent: 2933887 (1960-04-01), Davies
patent: 2946190 (1960-07-01), Corbett
patent: 2949731 (1960-08-01), Hambling
patent: 3332234 (1967-07-01), Lavash
patent: 3442218 (1969-05-01), Wess
patent: 3475910 (1969-11-01), Warne
patent: 4400934 (1983-08-01), Oberlander
patent: 5143329 (1992-09-01), Coffinberry

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