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ENB443-2009 : Review

ENB443-2009 : Review. Overview: Review of unit Hints about final exam. From 1 st Lecture: Why Study Space Technology?. More than space/scientific exploration. “The number of application s based on information coming from spacecraft has significantly increased over the last decade”.

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ENB443-2009 : Review

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  1. ENB443-2009: Review • Overview: • Review of unit • Hints about final exam.

  2. From 1st Lecture:Why Study Space Technology? • More than space/scientific exploration. • “The number of applications based on information coming from spacecraft has significantly increased over the last decade”. • We will focus on earth satellite technology. • Civilian and commercial application. We now understand this..

  3. From 1st Lecture:Satellite as a system! • High level mission objectives are the entire reason a satellite is launched. • A satellite is a complex (interconnected) system designed to deliver and support a payload and a mission. • Viewed as a system of systems, or various sub-systems interacting to deliver an objective. • Interfaces/interconnections are very important. We now understand this..

  4. From 1st Lecture:What we will cover • Time references and co-ordinate systems. • Orbital dynamics, equations of motion, Kepler, perturbations, propagation, etc. • Satellite technology: (sub-systems) • Structure, power, communication, thermal control, propulsion, attitude dynamics and control. • Delivery technology: launchers, rockets, staging, and trajectories. • Applications and outlook for the future. We covered this..

  5. From 1st Lecture:Where will you reach in this course? • You will be able to mathematical and numerically model satellite orbits (and rocket trajectories). • Understand satellites/rockets as systems (and sub-systems). • You will be able to evaluate mission objectives and their impact on design decisions. You did this and reached this understanding..

  6. Final Exam • Worth 50% of your final mark. • This year’s exam will focus on: • Student knowledge of : • satellite and rocket systems, • time/coordinate systems and • satellite subsystem design decisions and their impact. • Student capability to: • Apply discipline knowledge to relevant problems. • Solve problems using this knowledge.

  7. Final Exam • 2 hours length: • 7 questions. • Questions worth different marks (between 6 and 14 marks). • 60 marks available on the exam. • 30% on Orbit Dynamics • 40% on Sub-systems • 30% on Rocket Dynamics • Some number questions (you must bring a calculator).

  8. Suggested Study Activities • Have a look at previous exams • Note, this year the exam is 2hr long, so 2/3 the 2006 year’s exam. • 2006 exam is an o.k. guide. • But this year exam is slightly longer, and harder. • Do the questions. • Understand the basic rocket equation, rocket staging, etc. This material makes good exam questions. Make sure you can repeat the proofs, and do sample questions. • Be sure to understand: • Time and co-ordinate systems. • Orbits, Kepler’s laws, and their proofs. • Satellite as a system. • Solar panel energy balance concepts, thermal flux equations (equilibrium). • Satellite attitude dynamics (how to construct angular rotation matrices, torque). • Rocket dynamics, delta V, staging, proofs, etc. • Covers everything except: Orbit propagation.

  9. Exam Practice. • I have prepared some practice questions, of similar difficulty/length. • Available on Blackboard. • Includes answers for most questions. • And a few bonus/extra questions for practice. • I recommend doing all your preparation, then try the practice questions. Then re-read material related to questions you couldn’t answer. • I’ve post a copy of formula sheet similar to the formula sheet in the exam • Contains un-required formula, • NOTE: extra formula are provided in exam. • SO: don’t scope your study based on that sheet. • Getting 100% in the final exam should be possible. • It should be difficult to fail this exam (if you study).

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