JNTU
JNTU B.Tech IV Year AVIONICS AND INSTRUMENTS Previous Question Paper (May - 2019 - R15)
Note: This question paper contains two parts A and B. Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks.
Part A
Write a short note on task automation systems.
Answer
Task automation systems are integrated software and hardware architectures designed to perform routine flight management tasks, such as navigation, fuel management, and system monitoring, without continuous pilot intervention. These systems enhance operational efficiency, reduce crew workload, and minimize human error during complex flight phases.
List the systems and subsystems of avionics equipment.
Answer
Avionics systems are broadly categorized into:
- Communication systems (VHF, HF, SATCOM)
- Navigation systems (GPS, INS, VOR, ILS)
- Flight Control systems (Autopilot, Fly-by-wire)
- Monitoring and Display systems (EFIS, EICAS, Standby instruments)
- Data Recording systems (FDR, CVR)
- Surveillance systems (Radar, TCAS, Transponders)
Explain solid state standby display unit in brief.
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What do you mean by data recorders?
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Mention types of accelerometers used in GPS.
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What is the use of Optical gyroscopes?
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What is meant by protected ILS?
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Where the marker beacons are located? Explain its functions.
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Define Mode-S transponder.
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Classify the Air Traffic Control Systems?
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Part B
Describe in detail the state of art sensor systems utilized in aircrafts. Compare it with outside world sensor systems.
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Elaborate about electrical and optical data bus systems.
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Explain the role of Avionics in modern aircraft with the help of neat sketches.
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List out different data buses presently using in aircrafts with their applications.
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With the help of a simple diagram, explain Head up display (HUD).
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What are the advantages and disadvantages of Head up display (HUD) over CRT display?
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Elaborate the basic principle of VHF signal propagation.
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Interpret briefly block diagram the working of satellite communication system and its applications.
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What are is the working principle gyroscope? With the help of a rough sketch explain different parts of gyroscope.
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What is meant by rigidity and precision? What are the limitations of free gyroscope?
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Describe in detail the augmented satellite navigation technology. Contrast it with conventional navigation systems.
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What is Direction indicator? How do we control drift and gimbal ring balancing?
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Discuss different types of INS with relevant diagrams.
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Write a short note on platform axes and its angular rate corrections with neat sketches.
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Explain the following INS with its advantages and disadvantages:
Strap-down INS
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Computing aided INS
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With the help of neat diagram explain flight management system and data interfacing.
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Explain briefly about TACAN (tactical air navigation) in navigation systems for military aircraft.
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How the Auto land operation can be performed in aircraft? Explain about the required system for aircraft auto landing with suitable examples.
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Differentiate the command and telemetry systems in surveillance systems.
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