1. Introduction to Rocketry 1 June 2013

2. Rocket Concepts Newton’s Laws of Motion Thrust Drag Stability Moments of Inertia Parachutes Rocket Construction Rocket Testing and Analysis 2

3. A Little Bit of Historical Context 3 1200 BC 1926 AD 1945 AD 1969 AD 1981 AD 2013 AD Werner von Braun Robert Goddard

4. 4 Robert Goddard is known as the Father of Modern Rocketry. He experimented in Massachusetts in the early 1900’s and then moved his operation to Roswell, New Mexico in 1930.

5. Types of Rockets Performance Capability – Sub Orbital The trajectory intersects the surface of the Earth – Orbital Must be able to reach a velocity over 17,500 MPH Propulsion Types – Solid Propellant – Liquid Propellant – Hybrid 5

6. Types of Rockets Performance Capability – Sub Orbital The trajectory intersects the surface of the Earth – Orbital Must be able to reach a velocity over 17,500 MPH Propulsion Types – Solid Propellant – Liquid Propellant – Hybrid 6

7. 7 Reaching Orbit is all about achieving the right amount of velocity… 17,500 MPH Orbital 3,000 MPH Suborbital Sounding rockets can fly higher than orbital rockets If an orbital rocket were launched in a more vertical trajectory like a sounding rocket, it would go thousands of miles high, but it would eventually fall back to earth. In order to escape earth’s gravity, the rocket must reach a velocity of ~24,500 MPH

8. Types of Rockets Performance Capability – Sub Orbital The trajectory intersects the surface of the Earth – Orbital Must be able to reach a velocity over 17,500 MPH Propulsion Types – Solid Propellant – Liquid Propellant – Hybrid 8

9. Types of Rockets Performance Capability – Sub Orbital The trajectory intersects the surface of the Earth – Orbital Must be able to reach a velocity over 17,500 MPH Propulsion Types – Solid Propellant – Liquid Propellant – Hybrid 9

10. 10 Solid Rocket Motor Oxidizer Tank Fuel Tank Pump Rocket Engine Oxidizer Tank Solid propellant and combustion chamber Payload (Science Experiment) Solid Propellant Rocket Liquid Propellant RocketHybrid Propellant Rocket

11. 11 Liquid Rocket Solid Rocket Hybrid Rocket

12. Sounding Rocket Launch Vehicles 12

13. 13 Lift-off of two stage solid propellant sounding rocket

14. 14 Can Sounding Rockets be used to reach orbit?

15. Model Rockets Model rockets work just like NASA Sounding Rockets ‒Solid rocket motors are used to produce thrust ‒The rockets use fins to provide the necessary stability ‒Parachutes are used to recover the rockets Sounding Rocket payloads are recovered, but not the motors Model rockets can be safely used as part of the class curriculum if the instructor is knowledgeable and basic safety precautions are taken ‒The biggest No-No is building your own rocket motors 15 Stable Base Launch Rod Remote Electronic Ignition Control

16. 16 Rockets applied to the classroom…

17. Cool Things You Can Do With Rockets Write software to predict rocket performance Design your own rockets Conduct flight experiments Build a wind tunnel to conduct testing Develop experimental payloads to make real engineering or science measurements 17

18. What are we going to do this week? Build a foam model rocket Analyze and test the rocket Learn some basic rocket physics 18

19. Questions? 19