Download GTU BE/B.Tech 2019 Summer 8th Sem New 2180103 Space Dynamics Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-VII(NEW) EXAMINATION - SUMMER 2019

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Subject Code:2180103 Date:09/05/2019
Subject Name:Space Dynamics
Time:10:30 AM TO 01:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

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2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

MARKS

Q.1 (a) Define Space. How physical fundamentals for space vehicle are different 03 from those associated with airplanes?
(b) Classify Space vehicles. 04

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(c) With neat sketch explain different phases of space mission. 07

Q.2 (a) Write a note on Gravitational potential energy. 03
(b) With neat sketch explain terminology of elliptic orbit. 04
(c) Explain Newton’s law of gravitation in detail. 07

OR

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(c) Define Attitude Maneuver. How to measure it? Explain any one method of 07 its measurement?

Q.3 (a) Explain Entry heating. 03
(b) Derive an equation to calculate aerodynamic heating rate. 04
(c) Derive general equation of motion for a vehicle entering the atmosphere. 07

OR

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Q.3 (a) Explain Escape velocity. 03
(b) Compare Slender body and blunt body for entry heating performance. 04
(c) Explain briefly magnetic disturbance torque acting on vehicle revolving in 07 earth’s orbit.

Q.4 (a) Explain zero potential energy configuration. 03
(b) Explain Kepler’s 1^st and 2^nd laws. 04

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(c) Explain different types of entry paths. 07

OR
Q.4 (a) Calculate escape velocity required for a body to escape from the earth’s 03 atmosphere.
(b) With neat sketches explain different trajectories and its physical 04 significance.
(c) Using Newton’s Law of motion derive, 07

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F_r=Mx r¨_c, Where r_c= Position of center of mass

Q.5 (a) Write a note on mechanics of circular orbits. 03
(b) Derive an equation for an eccentricity in terms of the difference between 04 kinetic and potential energy.
(c) Write a note on N-body problem. 07

OR

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Q.5 (a) Explain the concept of Rigid body 03
(b) State and prove Kepler’s 3^rd law. 04
(c) Write a short note on Hohmann transfer ellipse. 07

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