EAS4510 - Astrodynamics

Spring 2019

COURSE INSTRUCTOR

COURSE OBJECTIVES

- Characterize and understand the key properties of the motion of a spacecraft in orbit under central body gravitation.
- Design basic impulsive in-plane and out-of-plane maneuvers to transfer a spacecraft between two orbits.
- Perform preliminary analysis for space missions including missions where a spacecraft is transferred between two bodies.
- Understand the motion of a spacecraft under the influence of non-central gravity perturbations.

IMPORTANT NOTE

APPROXIMATE SCHEDULE FOR MATERIAL

Topic

Review of Newtonian

Mechanics

Motion of a Spacecraft Under Central Body Gravitation

Parameterization of Orbit in Space Using Position and Velocity

Determination of Position and Velocity from Orbital Elements

Determination of Time

on an Orbit and Position on an Orbit Given Time

In-Plane and Out-of-Plane

Impulsive and Non-Impulsive

Orbital Transfer

Inter-Body Trajectories and Orbital Transfer Between Two Bodies

Non-Central

Body Gravitation

Material Covered

Particle Kinematics and Kinetics, Rigid Body Kinematics and Kinetics

Formulation and Solution of Two-Body Differential Equation

Computation of Orbital

Elements from Position and Velocity

Computation of Position and Velocity Given Orbital Elements

Definition of Eccentric Anomaly. Solution of Kepler's Equation Using Eccentric Anomaly

Hohmann/Bi-Elliptic Transfer; Phase / Apsis / Inclination Change; Rocket Equation

Patched-Conics; Launch Windows; Mid-Course Corrections; Fly-Bys

Perturbations, Rendezvous, and Relative Motion

Schedule

Weeks

1 and 2

Week

3

Week

4

Week

5

Weeks

6 and 7

Weeks

8 Through 10

Weeks

11 and 12

Weeks

13 and 14

COURSE LOCATIONS AND CLASS PERIODS

OFFICE HOURS

Name

Office Hours

E-mail Address

Anil Rao (Instructor)

MW: 2:00 PM - 3:30 PM

or by appointment. Please do not hesitate to contact me by e-mail, mobile phone, or text message if you need help!

Brittanny Holden (TA)

Joseph Eide (TA)

Tu: Periods 4 - 6 (NEB 109)

Th: Periods 4 - 6 (NEB 109)

**Note:**if for some reason you are unable to make my office hours, you can always schedule an appointment at a time that is mutually agreeable to both you and I.

TEXTBOOK

*Orbital Mechanics*, Second Edition. Oxford University Press.

COURSE NOTES

PROGRAMMING LANGUAGE REQUIREMENTS

HOMEWORK ASSIGNMENTS

__All assignments are due at 5:00 PM on the due date and must be submitted through the Canvas course page on the University of Florida E-learning website__.

Assignment

Assignment

Due Date

Homework #1

Homework #2

Homework #3

Background Material

Chapter 1 Problems

Chapter 2 Problems

18 January 2019

30 January 2019

20 February 2019

Homework #4

Chapter 3 Problems

13 March 2019

Homework #5

Homework #6

Chapter 5 Problems

Chapter 6 Problems

3 April 2019

17 April 2018

Bonus #1:

STK Level 1 Certification

Bonus #1:

STK Level 2 Certification

Register at https://www.agi.com/training#cert

Register at https://www.agi.com/training#cert

24

April

24

April

EXAM SCHEDULE, FORMAT, AND EXPECTATIONS

Quiz

Contents

Due Date

Take-Home Quiz #1

Take-Home Quiz #2

Based on HW #1 and #2

Based on HW #3

1 - 4 February 2019

22 - 25 February 2019

Take-Home Quiz #3

Based on HW #4

15 - 18 March 2019

Take-Home Quiz #4

Based on HW #5

5 - 8 April 2019

Take-Home Quiz #5

Based on HW #5

19 - 22 April 2018

QUIZ FORMAT

The course will have five *take-home* quizzes. Each quiz will be made available at 5:00 PM on a Friday and will be due the following Monday by noon. Late quizzes will not be accepted under any circumstances except the usual exceptions (illness or other emergency). Each quiz will require the use of MATLAB along with an understanding of the key concepts. Thus, it is *extremely important* that you understand the theory in addition to just being able to solve problems. Furthermore, the quizzes will require knowledge gained in the process of completing the homework assignments. Your grade on the take-home quizzes will be reflected in any procrastination in completing homework assignments.

MATERIALS PERMITTED FOR USE DURING EXAMS

All quizzes are open book and open notes. Any copying from any sources (including, but not limited to, other students quizzes, books, and resources available on the internet) will be considered cheating. All quizzes will be sent through the TurnItIn software on Canvas to check against all aforementioned material. Any student found to have copied will be in violation of the cheating policy in the course (see below).

ATTENDANCE RULES

CHEATING

MAKE-UP QUIZ POLICIES

COURSE GRADING

**Item**

Homework Assignments

Take-Home Quizzes

Bonus #1 (STK Level 1 Certification)

Bonus #2 (STK Level 2 Certification)

Total

**Percent Value**

6 @ 10 Percent = 60 Percent

5 @ 8 Percent = 40 Percent

10 Percent

10 Percent

**100 Percent + 20 Percent Bonus**

GRADING SCALE

**Letter Grade**

A

A-

B+

B

B-

C+

C

C-

D+

D

D-

E

**Score Range**

95 and Above

90 to less than 95

85 to less than 90

80 to less than 85

75 to less than 80

70 to less than 75

65 to less than 70

60 to less than 65

55 to less than 60

50 to less than 55

45 to less than 50

Less Than 45

NOTES ON ASSIGNMENT OF FINAL LETTER GRADES

- The grading scale above reflects the minimum that is required to receive a particular grade in the course.
- I reserve the right to uniformly increase all grades in the course by including a constant shift in the above grading scale. For example, if you receive a 93 (which, according to the grading scale, is a grade of "B+") and I shift the scale by two points, then I will add two points to your final grade which would give you a 95 (thereby making your final grade an "A-").
- Any score on the boundary between two ranges will receive the higher grade (for example, a 94 receives a grade of "A-").
- Finally, it is noted that while your individual scores for assignments, exams, and quizzes will be posted on E-learning (Canvas), the Canvas portal may not accurately reflect a student's relative standing in the class. Regardless of the information that is seen in Canvas, computation of final grades will be based on the criteria set forth above and a student's grade will only be final when grades have been computed at the end of the semester.