JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech II INTRODUCTION TO AEROSPACE ENGINEERING Previous Question Paper (May/June - 2019 - R15)
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
What is the origin of space debris.
Answer
Space debris originates primarily from defunct satellites, spent rocket stages, fragments from orbital collisions, and debris generated by anti-satellite tests or explosions in space.
Discuss the advent of dirigibles and the responsible inventors.
Answer
Dirigibles, or airships, became prominent in the late 19th and early 20th centuries. Henri Giffard is credited with the first powered, controlled flight of a steam-powered airship in 1852. Later, Count Ferdinand von Zeppelin revolutionized the field with his rigid airship designs, leading to the development of the iconic Zeppelin fleet.
What are the differences between symmetrical and cambered airfoils?
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Write the nomenclature of NACA 0012.
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Define drag polar. What is its significance?
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What is stick free static stability?
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Define Thermal control.
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What are the objectives of space missions?
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Write a note on Design for mission.
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Mention the ground facilities arranged for a military mission.
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Part B
Explain why biplanes were replaced by monoplane aircrafts?
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Into how many parts the atmosphere is divided? Name them. Characterize each part of the atmosphere in detail.
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Discuss about meteoroids and micro meteoroids.
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What are the different sources of aerodynamic drag? Explain in detail about each type of drag.
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Illustrate the working principle of rocket engine with neat schematic figure.
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Explain clearly components of turbo prop, turbo jet and turbo fan engines with help of neat diagrams.
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Explain in detail about aircraft stability controls with neat sketches.
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What are the parameters pertaining to the performance of an aircraft? Discuss with respect to steady flight.
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Consider an aircraft weighing 700 kN, traveling in straight and level flight at an altitude of 4800 m under a thrust of 1500 N. Its wing surface area is 200 m2, and aspect ratio is 7. Determine the stall speed of the aircraft. Given air density at 4800 m = 0.73762 kg/m3, and (CL)max = 1.4.
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Discuss in detail the communication and telemetry systems of a satellite with neat schematic figure.
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What is the need for attitude determination for a space vehicle? Illustrate the procedure to determine attitude.
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Describe power systems and satellite bus subsystems. Explain with suitable sketches.
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Mention a few aspects relating LTA (Lighter than air) vehicle design so that the vehicle becomes controllable.
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Write the objectives of civil and military aircraft. What are the principal constituents of civil aircraft?
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What is Preliminary Design Review (PDR)? List out the PDR template necessary components for each team presentation.
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