POWER ANALYZER AND RECORDER

Description:

The Power Analyzer and Recorder (PAR) system from Avionics Specialties, Inc. provides accurate, automatic monitoring of turbine engine parameters for engine health trending and maintenance diagnostics via gas path analysis. This compact, lightweight system allows maintenance crews and pilots to monitor the performance degradation of certain engine modules. All parameters are automatically recorded without manual queuing, eliminating the possibility of unmonitored exceedences during critical flight periods.

BASIC FUNCTIONS:

Important information is stored in the PAR computer. Data regarding engine starts, exceedences, airframe cycles, power checks, hot starts, engine cool-down time and engine shutdown is monitored and stored in memory, the number of engine starts (cumulative), total engine time, cycles (cumulative), date and clock time (24 hours) are also available following the initialization of the computer.

PAR monitors and records the following parameters:

•    Gas temperature (ITT, TOT. EGT, etc.)
•    Gas producer speed (N1, NG)
•    Power turbine speed (N2, NF)
•    Rotor/propeller speed (NR, NP)
•    Outside air temperature (OAT)
•    Pressure Altitude (PALT)
•    Batten bus voltage
•    Fuel flow (on select models)
•    Oil temperature (on select models)
•    Oil pressure (on select models)
•    Indicated air speed (IAS)
•    Engine operating time

Equipment:

PAR Computer: Provides input signal processing computation storage, self testing and communication with the other system components.

Pilot's Panel Display: LED readout with a seven step brightness control. Accepts inputs from integral pilot switches and provides outputs to aiming lights.

Outside Air Temperature Sensor (OAT): Mounted to are outside skin of aircraft, it transmits temperature data to the PAR computer for computation and recording.

Torque Transducer: A hydraulic pressure sensor, conforming to TSO C-47, that receives input related to engine torque.

Weight on Wheels Sensor (WOW): An ultrasonic proximity sensor initialed on the underside of aircraft that enables the computer to monitor takeoffs and landings.


Universal Communication Module (UCM): Downloads stored PAR data to a ground based computer or printer.

Output Printer: Accumulated data can be downloaded to a PAR system printer.

Warning Light Module (option): A visual alert when any monitored parameter reaches the yellow warning range or machine exceedence criteria

SYSTEM INTEGRATION:

Avionics Specialties, Inc. offers application engineering assistance and will be pleased to discuss this with you.