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introduction to aerospace engineering question paper for mechanical engineers
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Note: 1. ALL SECTIONS ARE COMPULSORY
**2. Each Section carries 20 Marks
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3 .a. Write down the three Kepler’s laws of planetary motion. Write a neat sketch to describe the perigee and apogee of a satellite orbiting the earth? (08 Marks) 3 .b. Describe^ a^ geostationary^ satellite^ and^ its^ features.^ What^ are^ the advantages of such a satellite? (06 Marks) 3.c. For a planet at a 1 AU from the sun, what would be its orbital period? (04 Marks) 3 .d. What are the differences between a Torpedo and a Missile? (02 Marks) SECTION – 4 4 .a. Draw a neat sketch of a jet-engine, name the components and explain their functionality. (08 Marks) 4 .b. Draw P-V and T-S diagrams of Brayton Cycle and describe the various events in the Cycle. Describe how is the thermal efficiency of a jet engine determined. (06 Marks) 4.c. Explain the terms Regeneration, Inter-cooling and Re-heat in a Brayton Cycle and explain with respect to the corresponding T-S diagrams. (06 Marks) SECTION – 5 5 .a. What are the pitot-static based and gyro-based instruments used in an aircraft. Describe what happens in flight if the static pressure port of an aircraft is clogged? ( 08 Marks) 5 .b. Explain the meanings of Truss, Monocoque and Semi-monocoque type of structures and where they are used. Why are composite materials preferred over metals in aerospace engineering? (06 Marks) 5.c. What are the major hydraulic, pneumatic and electrical systems in an aircraft and describe their functionality based on block diagrams? (06 Marks)