Power plants – Combustion products used as motive fluid – Combined with regulation of power output feature
Patent
1982-09-24
1984-09-04
Casaregola, Louis J.
Power plants
Combustion products used as motive fluid
Combined with regulation of power output feature
602261, F02C 928
Patent
active
044689241
ABSTRACT:
Pushbutton controls are provided for the power management of a turbine powered aircraft; and these pushbuttons may be mounted on the aircraft pilot's control handwheel. The turbine engine has a maximum rated permissible rotational speed which initially increases with increasing air temperature and with increasing altitude or reduced pressure; and has an absolute maximum limitation, with this maximum permissible rotational speed decreasing at increasing temperatures starting at about 10 or 15 degrees below zero, centigrade; and these limitations are reduced when supplemental equipment such as de-icing equipment is turned on. In accordance with the present invention, a series of "maps", or rotational speed control characteristics reflecting the factors mentioned above, are provided, and the pushbutton controls select among these characteristics, with the "take-off" power button permitting the highest maximum speeds, etc. In addition, automatic timing to reduce the maximum power levels, such as "Take-Off" power or "Performance Climb" power, is provided, to avoid over-stressing the turbine engines. The system may include additional arrangements for limiting the maximum allowable rotational speed of the turbine engine to a speed below that indicated by any of the "maps", when certain pushbuttons such as the "Approach" pushbutton is actuated.
REFERENCES:
patent: 4185460 (1980-01-01), Moore
patent: 4206597 (1980-06-01), Larsen et al.
patent: 4242864 (1981-01-01), Corneff et al.
patent: 4258545 (1981-03-01), Slater
Casaregola Louis J.
Semco Instruments, Inc.
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