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Performance of a helicopter is evaluated with an apparatus including a recorder section and a reader section interconnected during a start-up period while the pilot is initially operating the helicopter. The recorder includes two analog to digital converters connected across temperature and rotor to

Performance of a helicopter is evaluated with an apparatus including a recorder section and a reader section interconnected during a start-up period while the pilot is initially operating the helicopter. The recorder includes two analog to digital converters connected across temperature and rotor torque sensors of the helicopter. The converters derive digital signals having values representing the amplitudes of analog signals derived by the sensors. The recorder section has a first logic network that couples the digital signals with a data collecting memory. The reader section includes a second logic network, a digital read-out device and manually activated coding wheels for deriving numeric representing digital signals. The first and second logic networks are programmed so that: (a) during the start-up period numeric representing digital signals derived from the coding wheels and corresponding with the values of readings of meters responsive to the sensors are coupled from the reader to the data memory, and (b) during operation of the helicopter, while the reader and recorder are not connected, digital signals from the converters having values commensurate with readings of the meters are supplied to the first logic network. The first logic network responds to the digital signals from the converters to store in the data memory digital values derived from the converters. After operation of the helicopter has been completed, and while the recorder and reader are interconnected, the first and second logic networks are interconnected so that the second logic network supplies to the digital read-out device numerical values commensurate with the relative values of the numeric representing digital signals derived during (a) and the digital signals derived and stored during (b).

대표청구항 ▼

Apparatus for monitoring how an operator operates a machine having a sensor for a variable value operating parameter and a meter responsive to the sensor, the sensor deriving an analog signal having an amplitude indicative of the variable value of the operating parameter, the meter including a displ

Apparatus for monitoring how an operator operates a machine having a sensor for a variable value operating parameter and a meter responsive to the sensor, the sensor deriving an analog signal having an amplitude indicative of the variable value of the operating parameter, the meter including a display to be read by the operator and indicating the performance of the operator, the apparatus comprising: a recorder section and a reader section, said sections to be interconnected during a start-up period while the operator is initially operating the machine; the recorder section including: means to be connected across the sensor for deriving a digital signal having a value representing the amplitude of the analog signal derived by the sensor, a data collecting memory, and a first logic network, the first logic network being connected to be responsive to the digital signal having a value representing the amplitude of the analog signal derived by the sensor and to couple digital signals with the memory; the reader section including a second logic network, a digital read-out device and manually activated means for supplying numeric representing digital signals to the second logic network, the second logic network being connected to couple digital signals with the read-out device; the first and second logic networks being programmed so that: (a) during the start-up period a numeric representing digital signal derived from the manually activated means and corresponding with the value of a reading of the meter is coupled from the reader to a memory, and (b) during operation of the machine, while the reader and recorder are not connected, digital signals from the converter means having values commensurate with readings of the meter are supplied to the first logic network, the first logic network responding to the digital signals from the converter means to store in said data memory digital values derived from the converter means, and (c) after operation of the machine has been completed, and while the recorder and reader are interconnected, the first and second logic networks are interconnected so that the second logic network supplies to the digital read out device numerical values commensurate with the relative value of the numeric digital signals representing the digital signals derived and stored during machine operation (b).