JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

UNIT - I

Introduction to Aircraft Systems: System concepts, everyday examples of systems, sub- systems; Generic system definition, inputs, outputs, feedback, external influence; Aircraft systems- airframe systems, vehicle systems, avionics systems, mission systems and their sub- systems; Specification of requirements- mission requirements, performance requirements; Operating environment conditions.

UNIT - II

Electrical Systems and Flight Control Systems: Electrical loads in aircraft; Electrical power generation and control- DC, AC- types. Power distribution: primary, secondary, Power conversion and energy storage, Load protection, electrical load management systems, variable speed constant frequency (VSCS) cyclo converter and 270 V DC systems. Flight control systems: primary and secondary flight control, control linkages, actuation- types, description, and redundancy; Fly-by-wire control- control laws, implementation.

UNIT - III

Hydraulic Systems: Aircraft hydraulic systems: function, merits, application, system loads, design requirements, Principal components; Flight control actuation- importance, need for redundancy, types, description, and applications. Hydraulic fluid: Required properties, operating fluid pressures, temperatures, and flow rates; Hydraulic piping, pumps, reservoir, accumulator; Landing gear and brake management systems.

UNIT - IV

Pneumatic and Environmental Control Systems: Engine as source of high pressure air- engine bleed air- user systems, environment control, windscreen, wing and engine anti-ice, engine start, hydraulic, Pitot-static systems; Bleed air control- structure, components, operation; Need for controlled cabin environment; Principal heat sources in aircraft; Methods of cooling- ram air, engine bleed air, fuel cooling; Cooling systems: air cycle refrigeration, types, turbo fan, bootstrap, reverse bootstrap systems; Vapor cycle refrigeration. Humidity control; Air distribution systems, cabin pressurization, molecular-sieve oxygen concentrators, g-tolerance and protection.

UNIT - V

Engine Control and Fuel Systems: Principle of operation of aircraft gas turbine engines. Engine- airframe interfaces, Control of fuel flow, air flow, exhaust gas flow: need, means, system parameters, basic inputs and outputs; Limited authority control systems, full authority control systems- examples. Engine monitoring- sensors, indicators; Power off takes: need,

R16 B.TECH AERONAUTICAL ENGG.

types, effect on engine performance; Fuel systems: characteristics, components, operating modes. Fuel tank safety, fuel inserting system.

TEXT BOOKS:

• 1. David A Lombaro, “Aircraft systems”, Tata Mc Graw Hill, 2 nd Edition, 2009.
• 2. Moir I. Sea bridge, “Aircraft Systems: Mechanical, Electrical and Avionics Subsystems Integration”, 3 rd Edition, John Wiley, 2008.
• 3. Moir I. Sea bridge, “Design and Development of Aircraft Systems- an Introduction”, AIAA Education Series, AIAA, 2nd Edition, 2004.

REFERENCES:

• 1. Pallett, E.H.J, “Aircraft Instruments and Integrated Systems”, Longman Scientific and Technical, 10th Edition, 1992.
• 2. Harris D, “Flight Instruments and Automatic Flight Control Systems”, Ground Studies for Pilots, Blackwell Science, 6th Edition, 2004.
• 3. Bolton W, “Pneumatic and Hydraulic Systems”, Butterworth-Heinemann, 1st Edition, 1997. R16 B.TECH AERONAUTICAL ENGG.