MAE 161A 2009 - Lecture 4

MAE 161A 2009 - Lecture 4 - Lecture 4 News: Homework HW #1...

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Slide 1 © Wirz MAE 161A Lecture 4 News: Homework HW #1 Solutions Posted HW #2 due Tuesday (before class) Start STK problem before weekend Use problem statement for coversheet Office Hours Wednesday 11-noon? Reading Assignment: BMW, Ch 3 Chobotov, 5.1-5.5
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Slide 2 © Wirz MAE 161A Last Lecture Used the Constants of Motion and the Trajectory Equation to define/understand satellite motion and trajectories Some important equations a 2 11 Specific Mechanical Energy related to “a” 2 2 2 1 H e 10 Eccentricity (gives type of conic orbit)
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Slide 3 © Wirz MAE 161A Eccentricity Magnitude r p
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Slide 4 © Wirz MAE 161A Today’s Lecture Prove Kepler’s 2 nd and 3 rd Laws Second law: “The radius vector drawn from the sun to any planet sweeps out equal areas in equal times.” Third Law [1619]: “The squares of the periods of revolution of the planets are proportional to the cubes of the semi- major axes of their orbits”
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MAE 161A 2009 - Lecture 4 - Lecture 4 News: Homework HW #1...

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