Code No: RR412105 Set No. 1

IV B.Tech I Semester Regular Examinations, November 2007AIRCRAFT SYSTEMS AND INSTRUMENTS

(Aeronautical Engineering)Time: 3 hours Max Marks: 80

Answer any FIVE QuestionsAll Questions carry equal marks

1. Write short notes on the following: [4 4]

(a) Pneumatic controller for fuel metering

(b) Push Pull rods

(c) Gear system

(d) Characteristics of hydraulic fluid.

2. (a) Explain in detail the Brake system of an aircraft. [8]

(b) Draw the schematic of an Anti-skid system of a transport airplane and explainits working. [8]

3. (a) Explain the concept of Active Control Technology and how an auto-pilotsystem works incorporating engine performance data computer using ControlDisplay Unit (CDU). [10]

(b) Explain how the landing system works in an aircraft system. [6]

4. (a) What is meant by Fuel sediments? [6]

(b) Explain various quality check tests to be carried out on Aviation fuel. [10]

5. (a) Explain the functioning of a 28 volt aircraft starter-generator. [8]

(b) Explain how voltage regulation is achieved in a carbon pile voltage regulator.[8]

6. (a) List out various steps involved in servicing an aircraft oxygen system. [8]

(b) With the help of a neat diagram, explain the working of CO2 fire extinguisher.[8]

7. (a) What is the meant by Compass Swinging? [8]

(b) Explain the functioning of Direction Indicator in an aircraft. [8]

8. Write short notes on the following: [4 4]

(a) Engine Tachometer

(b) Turbine Gas Temperature (TGT) measuring device

(c) Resistance type fuel quantity indicators

(d) Bourdon tube pressure measuring instrument.

1 of 1

Code No: RR412105 Set No. 2

IV B.Tech I Semester Regular Examinations, November 2007AIRCRAFT SYSTEMS AND INSTRUMENTS

(Aeronautical Engineering)Time: 3 hours Max Marks: 80

Answer any FIVE QuestionsAll Questions carry equal marks

1. (a) What are the advantages and disadvantages of hydraulic system? [8]

(b) Explain in detail the working principle of any hydraulic system employed inaircraft. [8]

2. (a) Explain the working of air braking system. [8]

(b) Explain the importance of shock absorbers. [8]

3. Write short notes on the following: [16]

(a) Control Display Unit (CDU).

(b) Digital control.

(c) Fly-by-wire system.

(d) Stall warning indicator.

4. With the help of a simple functional diagram, explain Electronic Integrated Cen-tralized Aircraft Monitoring (EICAM) system using control-display unit (CDU).

[16]

5. (a) What are the advantages of bush less DC machine in Aircraft Electric System?[8]

(b) Explain Ignition-starter of a jet aircraft with the help of a simple sketch. [8]

6. (a) Draw the diagram of a vapour cycle cooling system and explain. [8]

(b) How does a basic air cycle system differs? [8]

7. Draw a detailed pictorial view of Flight Director System and explain how it helpsin achieving integrated Navigation in a modern aircraft. [16]

8. Write short notes on the following: [4 4]

(a) Variable pitch propeller

(b) Propeller control

(c) Electronic Engine controller (EEC)

(d) JPT gauge.

1 of 1

Code No: RR412105 Set No. 3

IV B.Tech I Semester Regular Examinations, November 2007AIRCRAFT SYSTEMS AND INSTRUMENTS

(Aeronautical Engineering)Time: 3 hours Max Marks: 80

Answer any FIVE QuestionsAll Questions carry equal marks

1. (a) Explain different modes of operation of hydraulic controllers. [8]

(b) How the power can be activated in aircraft engines? [8]

2. Write short notes on the following: [16]

(a) Aircraft brake system.

(b) Antiskid mechanism.

(c) Landing gear safety devices.

(d) Nose wheel steering system.

3. (a) What are the salient features of modern airplane control system? [8]

(b) Explain the modern state-of-art in Control and Display technology. [8]

4. (a) Explain the general operation of FFCU. [8]

(b) Explain in detail how fuel spray enhances the efficiency of engine operation.[8]

5. (a) Explain the working principle of starting system used in Jet and Piston en-gines. [8]

(b) Describe different starting systems used in aircrafts. [8]

6. Write short notes on the following: [16]

(a) Oxygen system.

(b) Cabin pressurization.

(c) Basic vapor cycle.

(d) Smoke detector.

7. (a) Explain the basics of an international standard Atmosphere (ISA) and [10]

(b) Explain how it affects the functioning of an altimeter with the help of a dia-gram. [6]

8. Write short notes on the following: [4 4]

(a) Mechanical type fuel quantity indicators

(b) Oil pressure indicator

(c) Tachometer

1 of 2

Code No: RR412105 Set No. 3

(d) Exhaust temperature indicator.

2 of 2

Code No: RR412105 Set No. 4

IV B.Tech I Semester Regular Examinations, November 2007AIRCRAFT SYSTEMS AND INSTRUMENTS

(Aeronautical Engineering)Time: 3 hours Max Marks: 80

Answer any FIVE QuestionsAll Questions carry equal marks

1. (a) What are the advantages and disadvantages of hydraulic system? [8]

(b) Explain in detail the working principle of any hydraulic system employed inaircraft. [8]

2. (a) Explain various configurations of landing gears employed in majority of theaircrafts. [8]

(b) With the help of a neat sketch explain the function of Air-oil shock oleoleg.[8]

3. Depict the block diagram of an automated flight management system of a civilairliner and explain its salient features. [16]

4. Write short notes on the following: [16]

(a) Pressure feed fuel system.

(b) Fuel cross -feed system.

(c) Fuel filters.

(d) Under wing sight gage.

5. (a) Differentiate between LT ignition and HT ignition systems. [8]

(b) Draw a wiring diagram for HT ignition system for a turbo fan engine andexplain. [8]

6. (a) Explain the working principle of evaporative refrigeration system with a neatsketch. [8]

(b) How the fire can be controlled in an aircraft system. [8]

7. Write short notes on the following: [16]

(a) Directional Gyro.

(b) Pilot-static probe.

(c) Air speed Indicator.

(d) Stall warning indicator.

8. Write short notes on the following: [4 4]

(a) Mechanical type fuel quantity indicators

1 of 2

Code No: RR412105 Set No. 4

(b) Oil pressure indicator

(c) Tachometer

(d) Exhaust temperature indicator.

2 of 2