Subject Code & Name: AE25301 – Aircraft Electrical and Electronics Systems
Regulation: R-2025
Semester: III (Third Semester)
Branch: B.E. Aeronautical Engineering (Aero)
Credits / L-T-P: 3 Credits | L-T-P: 3-0-0
Course Objectives
- To introduce aircraft electrical and electronic systems including power generation, distribution, sensing, and protection mechanisms.
- To enable analysis and design of reliable aircraft electrical systems using engineering principles and modern tools.
Full Unit-wise Syllabus
Unit I – Aircraft Electrical Power Generation and Storage Systems
Introduction to battery system, storage cells, types of batteries: lead-acid batteries, nickel-cadmium batteries, lithium batteries, introduction to regulators, types of regulators: vibrating contact regulator, carbon-pile regulator, electronic voltage regulator, inverters, transformers and auxiliary power units (APU), types of wires and cables, circuit protectors, fuses, current limiters, limiting resistors, circuit breakers, overvoltage and undervoltage protection system. power system architecture in Airbus A320 and Boeing 787.
Unit II – Aircraft Electrical Power Distribution and Sensing Systems
Introduction to Busbar, single engine, twin engine, bus system, types of bus system: split bus system, parallel system, split/ parallel system, control and protection of power distribution system, switches, types of switches, relays, Introduction to transducers, types of transducers: solenoids, fluid pressure transducers, temperature transducers, strain transducers, rotary position transducers, rotary position transducers, accelerometers, case study of busbars in Airbus A320 and Boeing 787. Evolution of aircraft electronic systems, civil and military aircraft electronics, diodes and transistors used in avionics, operational amplifiers and signal conditioning circuits, ADCs and DACs, microprocessors and microcontrollers in avionics.
Unit III – Aircraft Electrical Control, Indication, and Protection Systems
Engine starting systems: starting and ignition, indicators, primary indicators, secondary indicators, fuel tank measurement and indication, light systems, flight compartment lights, passenger cabin lights, exterior lights, landing gear control systems, trailing edge flaps control mechanism, stall warning and protection system, airframe ice and rain protection systems, engine/ APU fire detection, baggage area fire protection, fire extinguishers, terrain awareness warning system, modes of ground proximity, forward-looking terrain avoidance system, case study of monitoring, indication, control, warning and protection systems in Airbus A320 and Boeing 787.
Course Outcomes (COs)
- CO1: Explain fundamental concepts of aircraft electrical power generation, storage systems, distribution networks, sensing devices, control, indication, and protection systems.
- CO2: Apply electrical engineering principles to determine power distribution, busbar configurations, and performance of aircraft electrical and sensing systems.
- CO3: Analyze aircraft electrical systems to identify system behavior, performance characteristics, and operational issues under different conditions.
- CO4: Evaluate and develop suitable aircraft electrical system solutions by comparing architectures and ensuring reliability, safety, and efficiency.
Assessment Pattern (Quick Note)
- Weightage: Continuous Assessment 40% | End Semester Examinations 60%
- Internal methodology: Quiz (10%), Assignments (20%), Flipped Class (10%), Solving GATE questions (10), Internal Examinations (50%)
Source: Official Anna University – B.E. Aeronautical Engineering R-2025 Syllabus
Last Updated: September 2026
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