GTU BE 8th Semester 2180103 Space Dynamics Summer 2018 Question Paper

1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE – SEMESTER ?VIII (NEW) – EXAMINATION ? SUMMER 2018
Subject Code: 2180103 Date: 30/04/2018
Subject Name: Space Dynamics
Time: 10:30 AM to 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) What is Space? Why the dynamics of space objects are
important to study?
03
(b) Is there gravity in Space? Yes or No. Explain in detail. 04
(c) Explain different types of entry paths. 07

Q.2 (a) What are the different phases of Space mission? 03
(b) Explain zero potential energy configurations. 04
(c) Derive Angular momentum and Energy using wheel and
axle theory.
07
OR
(c) Find the values of velocity required to obtain a circular
orbit and parabolic trajectory for earth.
07
Q.3 (a) Explain different types of space vehicles. 03
(b) Write difference between Elliptical and Circular orbit. 04
(c) Write a note on Elliptic orbit. 07
OR
Q.3 (a) Explain initial stages of any space mission. 03
(b) Explain the Concept of Entry Corridor. 04
(c) Explain mechanics of Circular orbit. Also list important
points for the same.
07
Q.4 (a) Define Entry heating. 03
(b) What do you mean by Rigid Body? 04
(c) Derive general equation of motion for a vehicle entering
the atmosphere.
07

OR
Q.4 (a) What is Gyrostat? 03
(b) Explain the working of Rotor and Platform with neat
sketch.
04
(c) Derive an expression for aerodynamic heating rate. 07
Q.5 (a) What do you mean by dual spin satellite? 03
(b) Comment on Two body problem. 04
(c) Explain the working of dual spin satellite with neat
sketch.
07
OR
Q.5 (a) What do you mean by Deep space? 03
(b) What is Escape velocity of Spacecraft? 04
(c) From orbit equation, derive formula to calculate
eccentricity in terms of the difference between kinetic
energy and potential energy.
07
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