Method and apparatus for measuring pressures in a rotor of a tur

Details Method and apparatus for measuring pressures in a rotor of a tur Method and apparatus for measuring pressures in a rotor of a tur

1986-01-23

1987-10-27

Caldwell, Sr., John W.

Communications: electrical

Continuously variable indicating

Condition responsive

34087017, 34087011, 34087031, 73116, G01D 700, G01D 702, G01D 704

Patent

active

047033266

ABSTRACT:
A method and apparatus for measuring pressures in a gas turbine engine comprising a stator, a hollow rotatable shaft carrying a rotor and a first sensor having a plurality of inputs for pressure measured at respective test points on the rotor. Within the shaft are the following: a selector switch for selection of signals from respective test points, a stepping motor for driving the selector switch stepwise, a pressure module for converting the pressure signal from the sensor to an electrical signal, a further module for receiving inputs related to further conditions such as temperature, a first transmitter module for the telemetric remote transmission of the pressure signals from the pressure module, a second transmitter module for the telemetric remote transmission of the further conditions, a carrier for the first and second transmitter modules and a transmitter antenna connected to the first and second transmitter modules for transmitting the signals indicative of pressure and the further conditions as test data to the stator. A non-contact inductive current supply is connected to the first and second transmitter modules.

REFERENCES:
patent: 3713124 (1973-01-01), Durland et al.
patent: 4150358 (1979-04-01), Aviander
patent: 4414853 (1983-11-01), Bryzek
patent: 4418411 (1983-11-01), Strietzel
patent: 4502043 (1985-02-01), Moore
patent: 4563682 (1986-01-01), Merkel

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