GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER- VII (New) EXAMINATION — WINTER 2019
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Subject Code: 2170104 Date: 03/12/2019
Subject Name: Rocket & Missile Technology
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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Q.1 (a) What are the various types of propellants used for Rocket & Missile engines? 03
(b) Write difference between flow past over Wedge & Cone. 04
(c) Classify various types of Missiles on the basis of their purpose. 07
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Q.2 (a) Classify different types of Missile noses. 03
(b) Name the factors on which rockets are fully rely during flight. 04
(c) Write a short note on Ogival forebody. 07
OR
(c) Write a short note on Conical forebody. 07
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Q.3 (a) Write benefits of having blunt nose. 03
(b) Write advantages and disadvantages of boat tail. 04
(c) Write a short note on Graphical method used to determine missile/rocket trajectory. 07
OR
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Q.3 (a) Compare pressure & drag distribution on conical & Ogival forebody. 03
(b) What are the benefits of Mid sections? Explain Mid-section of missiles in brief. 04
(c) What are the different types of Rocket/Missile forebodies? Explain hemispherical forebody with neat sketch. 07
Q.4 (a) What is nose fineness ratio? Explain steps to design Power series noses. 03
(b) Define Outage. Explain ‘Calibrated system outage control in brief. 04
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(c) List out Propellant ingredients for solid propellant and explain Inorganic oxidizers with appropriate examples. 07OR
Q.4 (a) What are the different types of noses under hemispherical forebody? 03
(b) What are Gelled propellants? What are their characteristics? 04
(c) Explain-Desirable physical properties for liquid propellant. 07
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Q.5 (a) List out major considerations of good load controls for propellant loading tolerance. 03
(b) Briefly explain Organic oxidizers for solid propellant. 04
(c) Write a short note on Propellant tank outlet design with neat sketch. 07
OR
Q.5 (a) Define Density variations for Propellant loading tolerances. 03
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(b) Explain Tank Stretch and shrinkage. 04(c) Make a relation between mixture ratio loaded and mixture ratio burned. 07
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