Power plants – Reaction motor – Condition responsive thrust varying means
Patent
1991-08-13
1992-10-27
Casaregola, Louis J.
Power plants
Reaction motor
Condition responsive thrust varying means
60 39281, F02C 928
Patent
active
051579189
ABSTRACT:
A compensating device for the temperature in front of the high pressure turbine of a compound turboshaft aero-engine which is regulated to a designated constant temperature behind the low pressure turbine is provided with a function generator which supplies a correction value signal for the designated temperature as a function of the rotational speed of the low pressure turbine and of the actual temperature at the outlet of the said turbine. The device is activated as soon as the rotational speed of the high pressure turbine goes below 80% of its maximum rated speed and is operative to apply the correction value signal to the designated temperature for a predetermined time as soon as the rotational speed of the high pressure turbine goes above 90% of its maximum rated speed while the device is activated.
REFERENCES:
patent: 3667218 (1972-06-01), Davis
patent: 3902315 (1975-09-01), Martin
patent: 4314445 (1982-02-01), Lewis
patent: 4350008 (1982-09-01), Zickwolf
patent: 4627234 (1986-12-01), Schuh
patent: 4910956 (1990-03-01), Legore et al.
Casaregola Louis J.
Societe Nationale d'Etude et de Construction de Motors d'Aviatio
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