1. Derive an expression for the escape velocity of a satellite from the Earth.

2. What is the difference between Keplerian orbits and Perturbed Keplerian orbits?

3. Explain the difference between chemical rocket propulsion and electrical rocket propulsion systems used for spacecraft flights, with the help of suitable diagrams.

4.(a) Discuss the salient features of interplanetary mission vis-a-vis Earth satellite mission or Lunar mission.

4.(b) Explain geosynchronous satellites.

5. Explain the stability of motion near the liberation point. Make use of proper sketches and examples.

6. Describe in detail the general aspects of satellite injection.

7. Explain the factors behind perturbation of satellite's orbit and its positions.

8. Explain fully all the features of entry trajectory of a ballistic missile.

9. Describe three types of entry paths possible while the spacecraft enters the atmosphere. Also describe Entry Corridor.