Basic CBT Module-6 Instrument Systems
The basic CBT module BM-06 provides the essential principles of measurements that relate to aircraft instruments. The working principles of various flight instruments and engine instruments are also described.The topics covered in this CBT are listed below. The CBT comprises of 427 pages of courseware that include text, audio, and graphics.
- Terminology and Basic Concepts
- Meaning of terms: error (hysteresis/parallax),correction, tolerance, calibration,sensitivity, absolute/differential/gauge pressure;
- Conversion of units: p.s.i/mm Hg,knots/m.p.h., U.S. gallons/Imperial gallons/litres; Atmospheric physics, ICAO standards, QFE, QNE, QNH, Mach number computation.
- Pitot-Static Systems and Instruments
- Static Pressure & Pitot Pressure Explanation
- Pitot Probe and Static Ports
- Pitot-Static Instruments:
- Airspeed indicator
- Altimeter
- Vertical speed indicator
- Machmeter
- Servoed Altimeter;
- Pitot-head heater
- Pipelines and flexible hoses
- Drain traps, associated equipment
- Altitude and airspeed switches
- Gyroscopes
- Basic principles
- Types and methods of operation
- Vacuum Gyros
- Electrical Gyros
- Laser Gyros
- Handling care
- Attitude sensing: errors/correction, remote gyros,interconnections and transfers,limits, displays
- Direction sensing: errors/compensation, remote gyros,interconnection and transfers, displays
- Rate sensing: alignment, rotor speeds, displays.
- Vacuum Systems
- Sources
- Control and adjustment
- Indication.
- Pressure Measurement
- Sensing elements: capsules, bellows, bourdon tubes
- Transmitters
- Displays
- Temperature Measurement
- Variable resistance
- Wheatstone Bridge
- Ratiometric
- Thermocouples
- Compensation
- Cold Junction Compensation
- Moving Coil Compensation
- External Circuit Considerations
- Limits and values
- Servo-operated indicators
- Control system inputs (TBD)
- Rotational Speed Measurement
- Direct drive indicators
- Tacho-generator and indicator systems
- Pulse probe systems
- Displays.
- D.C Indicating System
- D.C Indicating System
- A.C. Indicating systems
- Autosyn Systems
- Magnesyn System
- Quantity Measurement
- Direct reading;
- Electrical and electronic systems
- Compensation
- Power supplies
- Flow Measurement
- Volume Flow Measurement
- Mass Flow Measurement
- Transmitters
- Indicators
- Power supplies.
- Compasses
- Types of compasses
- Flux valves, remote sensors and system components
- Direct reading compass installation, safe distance
- Comparison between remote indicating and direct reading compasses
- Heading reference outputs.
- Compass Compensation
- Base survey techniques
- Compass swinging areas
- Aircraft magnetism
- Terrestrial magnetism - variation
- Methods and procedures for swinging compasses
- Deviation calculations and effect on a compass
- Air Data Computation
- Sensors and inputs
- Signal processor elements: mechanical, electrical and electronic
- Signal outputs
- Aircraft & engine applications & related systems.
- Flight Path Computation
- Signal sources
- Modes
- Computation
- Displays / Indicators
- Electronic Display Systems
- EADI
- EHSI
- Symbol generator
- Control panels
- MFD
- Engine indicating and crew alerting systems
- Electronic centralized aircraft monitors
- Flight Recorders
- Requirements
- Sensors and inputs
- Interface with aircraft systems
- Signal processing
- Entry panels
- Computer principles
- Data recording methods
- Retrieval and verification
- Failure monitors
- Ground Proximity Warning Systems
- Modes
- Warnings
- Inputs and interface with other aircraft systems
- Computation; Monitors; Failure indications.
- Vibration Measurement
- Types of pick-up
- Signal conditioning
- Displays
- Alarm levels and warnings
- Oxygen
- Effects of hypoxia
- Storage Cylinders
- Regulators
- Distribution
- Charging
- Charging
- Chemical system
- Therapeutic provision
- Masks: passenger/crew/smoke
- Safety features and precautions.
- Pressurization
- Maximum differential and negative pressure control
- Cabin altitude and rate of change
- Emergency dump and manual control
- Cabin altitude warning.
- Autopilot System
- Terminology
- Block diagram of a typical system
- Altitude change-signal detector
- Radio navigation aids
- Roll channel operation
- Servomotors
- Simple flight director system
