**Lecture Title: Case Studies: Successful Propulsion Systems in Past and Current Space Missions**

**Lecture Overview:**
In this lecture, we will examine a series of case studies that highlight successful propulsion systems used in various past and current space missions. By analyzing these real-world examples, we can gain insights into the design, challenges, and impact of different propulsion technologies on the success of space exploration endeavors.

**Lecture Outline:**

1. **Introduction to Case Studies of Successful Propulsion Systems:**
   - Explanation of the importance of studying successful propulsion systems.
   - Introduction to the selection of case studies for analysis.

2. **Voyager 1 and 2: RTGs for Deep Space Exploration:**
   - Exploration of the Radioisotope Thermoelectric Generators (RTGs) used in Voyager 1 and 2 missions.
   - Discussion on how RTGs provided power for long-lasting missions beyond the solar system.

3. **Cassini-Huygens: Hybrid Propulsion for Saturn Exploration:**
   - Explanation of the Cassini-Huygens mission's propulsion system.
   - Introduction to the combination of chemical propulsion and gravity assists for efficient maneuvering.

4. **Dawn Mission: Ion Propulsion for Asteroid and Dwarf Planet Exploration:**
   - Exploration of the Dawn mission's ion propulsion system.
   - Discussion on how ion thrusters enabled efficient travel to multiple celestial bodies.

5. **Mars Rovers: Supersonic Parachutes and Sky Cranes:**
   - Explanation of propulsion-assisted landing systems used in Mars rovers like Curiosity and Perseverance.
   - Introduction to supersonic parachutes and sky crane maneuvers.

6. **International Space Station (ISS): Resupply and Orbital Corrections:**
   - Exploration of the various propulsion systems used on the ISS.
   - Discussion on resupply missions, station-keeping, and attitude adjustments.

7. **Deep Space One: Ion Propulsion for New Technology Testing:**
   - Explanation of the Deep Space One mission's ion propulsion system.
   - Introduction to the use of ion thrusters for testing advanced technologies.

8. **New Horizons: Hydrazine Thrusters for Pluto Flyby:**
   - Exploration of the New Horizons mission's propulsion system.
   - Discussion on how hydrazine thrusters enabled course corrections during the Pluto flyby.

9. **Junocam: Juno's Close Encounters with Jupiter:**
   - Explanation of JunoCam's propulsion system used in the Juno mission.
   - Introduction to its role in capturing close-up images of Jupiter's atmosphere.

10. **Future Missions and Innovations: Beyond the Case Studies:**
    - Overview of upcoming missions and propulsion innovations.
    - Introduction to advancements in propulsion technology for future exploration.

**Key Takeaways:**
By the end of this lecture, students should have gained a deep understanding of successful propulsion systems used in a variety of past and current space missions. They will appreciate the diversity of propulsion technologies employed for different mission objectives, as well as the critical role these technologies play in enabling successful space exploration. This knowledge will provide insights into the practical applications of propulsion systems and their contributions to advancing our understanding of the cosmos.