Space Environment I

Space Environment I

Introduction to Space Systems and Spacecraft DesignSpace Systems Design

2

How Does It Effect Your S/C Design?

•Structure•Electronics•Solar Panels•Radio Communications

•Notes to consider―Deep space temperature range 4 deg K to 5800deg K.―Radiation effects – worse than any place else in LEO orbit.―Best radiation resistant FPGA - Actel

Some slides by Dr. J. Cutler – Univ. of Michigan

Space Environment - I

Introduction to Space Systems and Spacecraft DesignSpace Systems Design

3

Space Environmental Effects

Some slides by Dr. J. Cutler – Univ. of Michigan

Space Environment - I

Introduction to Space Systems and Spacecraft DesignSpace Systems Design

4

Consider some things in the environment.

Some slides by Dr. J. Cutler – Univ. of Michigan

Space Environment - I

Introduction to Space Systems and Spacecraft DesignSpace Systems Design

5

How about the earth’s magnetic fields?

Some slides by Dr. J. Cutler – Univ. of Michigan

Space Environment - I

Introduction to Space Systems and Spacecraft DesignSpace Systems Design

6

How about the sun’s effect on earth and in space?

Some slides by Dr. J. Cutler – Univ. of Michigan

Space Environment - I

Introduction to Space Systems and Spacecraft DesignSpace Systems Design

7

What the Sun Does

Some slides by Dr. J. Cutler – Univ. of Michigan

Space Environment - I

Introduction to Space Systems and Spacecraft DesignSpace Systems Design

8

How about the sun’s effect on earth and in space?

Some slides by Dr. J. Cutler – Univ. of Michigan

Space Environment - I

Introduction to Space Systems and Spacecraft DesignSpace Systems Design

9

How about the earth’s magnetosphere?What causes it?

Some slides by Dr. J. Cutler – Univ. of Michigan

Space Environment - I

Introduction to Space Systems and Spacecraft DesignSpace Systems Design

10Some slides by Dr. J. Cutler – Univ. of Michigan

Space Environment - I

Introduction to Space Systems and Spacecraft DesignSpace Systems Design

11

Anomalies caused by Solar Storms

Some slides by Dr. J. Cutler – Univ. of Michigan

Space Environment - I

Introduction to Space Systems and Spacecraft DesignSpace Systems Design

12

19 November 2003

ANOMALIES RELATED TO RECENT SOLAR ACTIVITY

Collected by David Webb from various sources for events arising from recent flares, CMEs, and geomagnetic storms.

david.webb@hanscom.af.mil

Oct. 23: Genesis solar wind satellite at L1 entered safe mode. Normal operations resumed on Nov. 3.

Some slides by Dr. J. Cutler – Univ. of Michigan

Space Environment - I

Introduction to Space Systems and Spacecraft DesignSpace Systems Design

13

Nov. 2: Chandra observations halted again autonomously due to radiation. Resumption of observations will be delayed for days.

Nov. 6: Polar TIDE instrument reset itself and high voltage supplies were disabled; recovered within 24 hr.

Mars Odyssey spacecraft commanded out of Safe mode; operations nominal.

General:

Satellite operators: Satellites put into safe modes, solar panels rotated, operations reduced.

Power grid managers: Less use of and switching between systems.

Some slides by Dr. J. Cutler – Univ. of Michigan

Space Environment - I

Introduction to Space Systems and Spacecraft DesignSpace Systems Design

14

Van Allen Radiation Belts

Some slides by Dr. J. Cutler – Univ. of Michigan

Space Environment - I

Introduction to Space Systems and Spacecraft DesignSpace Systems Design

15What is different here?

Some slides by Dr. J. Cutler – Univ. of Michigan

Space Environment - I

Introduction to Space Systems and Spacecraft DesignSpace Systems Design

16What is different here?

Some slides by Dr. J. Cutler – Univ. of Michigan

Space Environment - I

Introduction to Space Systems and Spacecraft DesignSpace Systems Design

17Some slides by Dr. J. Cutler – Univ. of Michigan

Space Environment - I

Introduction to Space Systems and Spacecraft DesignSpace Systems Design

18

Questions?

Space Environment - I

Introduction to Space Systems and Spacecraft DesignSpace Systems Design