JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Pre-Requisites

Nil

Course Objectives:

• Explain the concept and meaning of system and classify the various systems required for aircraft and their contribution in order to fulfil the aircraft tasks.
• Describe the various types of Electrical power generations and distribution in aircraft.
• Impart the knowledge of pneumatic, hydraulic and environmental control system.
• Demonstrate different actuators, flight control system and advanced flight actuation system.

Course Outcomes:

• The principles of flight control
• The principle and working of electronic and mechanical control systems
• Various types of aircraft instruments
• Static & dynamic characteristics of instruments

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 Air Conditioning, Pressurizing 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) cycloconverter, 270 V DC systems; Basic air cycle systems; Vapour cycle systems, boost-strap air cycle system; Evaporative vapour cycle systems; Evaporative air cycle systems; Oxygen systems; Fire protection systems, de-icing and anti icing systems.

UNIT - III

Hydraulic Systems and Pneumatic Systems: Hydraulic systems: Study of typical workable system, function, merits, application, system loads, design requirements; Principal components; Hydraulic fluid: required properties, operating fluid pressures, temperatures, and flow rates; Hydraulic piping, pumps, reservoir, accumulator; Landing gear and brake management systems. Pneumatic systems; Advantages; - Working principles; Typical air pressure system; Brake system; Typical pneumatic power system; Components, landing gear systems; Classification.

UNIT - IV

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

UNIT - V

Airplane Control Systems: Flight control systems- primary and secondary flight control conventional systems; Power assisted and fully powered flight controls ; Power actuated systems; Engine control systems; Push pull rod system, flexible push full rod system; Components; Modern control systems;

R18 B.TECH AERONAUTICAL ENGG. III YEAR

Digital fly by wire systems , control laws, implementation; Auto pilot system active control technology, communication and navigation systems instrument landing systems; Control linkages, actuation- types, description and redundancy.

TEXT BOOKS:

• 1. Moir, I. and Sea bridge, A, ―Aircraft Systems: Mechanical, Electrical and Avionics Subsystems Integrationǁ, John Wiley, 3rd Edition 2008.
• 2. Moir, I. and Sea bridge, A, ―Design and Development of Aircraft Systems- An Introductionǁ, AIAA Education Seriesǁ, AIAA, 2004.

REFERENCE BOOKS:

• 1. Pallett, E.H.J., ―Aircraft Instruments and Integrated Systemsǁ, Longman Scientific &Technical 10th edition, 1992.
• 2. Harris, D, ―Flight Instruments and Automatic Flight Control Systemsǁ, 6th edition, 2004.
• 3. Bolton, W., ―Pneumatic and Hydraulic Systemsǁ, Butterworth-Heinemann. R18 B.TECH AERONAUTICAL ENGG. III YEAR