lecture10 - ECE2984 Lecture10:SPACEWEATHERHAZARDS...

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ECE 2984 Lecture 10: SPACE WEATHER HAZARDS Joseph Baker (ECE Dept) Lecture 10: Space Weather ECE 2984:Exploration of Space
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First Mid Term Exam e first mid rm exam will be held in class on Tuesday February 22 nd The first mid term exam will be held in class on Tuesday February 22 . I remind you that your course grade will be determined as follows: Homework + Project + Quizzes 30% assEam 1 5% In class Exam 1 15% In class Exam 2 20% Final Comprehensive Exam 35% Total: 100% There will be no make up exams. If you miss one of the mid term exams and you have a valid excuse then y y the other mid term will count for 35% of your course grade. If you miss a mid term exam and you don’t have a valid excuse then you will score zero for that mid term exam. Joseph Baker (ECE Dept) Lecture 10: Space Weather ECE 2984:Exploration of Space
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First Mid Term Exam The first mid term exam will be closed book and closed notes. You will not need a calculator–there are no calculations on the exam. The exam questions will be similar to the ones on the homework: ight questions worth 1 point (1 word answers) Eight questions worth 1 point (1 2 word answers) Eleven questions worth 2 points (short sentence answers) Ten questions worth 3 points (short sentence + diagram answers) One question worth 5 points (Comprehensive diagram) The main difference between the exam and the homework is you will not have your lecture notes to help you in the exam. If you have been doing the homework and learning the material along the way (rather than just copying it down) you should be in good shape. Are there any questions or concerns regarding the mid term? Joseph Baker (ECE Dept) Lecture 10: Space Weather ECE 2984:Exploration of Space
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Last Lecture LAST TWO LECTURES: eomagnetic ctivity d agnetic dices Geomagnetic Activity and Magnetic Indices Geomagnetic Storms Space Weather The Space Weather Prediction Center Effects on Human Health fects n acecraft Effects on Spacecraft THIS LECTURE: Space Weather Satellite Drag Power Disruption Degradation of Communications and Navigation Joseph Baker (ECE Dept) Lecture 10: Space Weather ECE 2984:Exploration of Space
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Atmospheric Effects on Spacecraft Joseph Baker (ECE Dept) Lecture 10: Space Weather ECE 2984:Exploration of Space
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Spacecraft Drag •T h e uppermost layer of the Earth’s atmosphere is called the Thermosphere. As a spacecraft moves through the thermosphere the air molecules produce a friction force on the spacecraft (or “drag”) which slows it down. h e thermosphere is much more variable than the lower atmosphere it i iti t l EUV d X itd ith l fl because it is sensitive to solar EUV and X rays associated with solar flares and other disturbances.
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This note was uploaded on 09/19/2011 for the course ENGE 1114 taught by Professor Twknott during the Fall '06 term at Virginia Tech.

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lecture10 - ECE2984 Lecture10:SPACEWEATHERHAZARDS...

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