Mars Exploration Rovers - PowerPoint PPT Presentation

Loading...

PPT – Mars Exploration Rovers PowerPoint presentation | free to download - id: 469f0f-YjllM



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

Mars Exploration Rovers

Description:

Mars Exploration Rovers Entry, Descent, Landing and Deployment Mars Mission Landing Sites The navigation platform separates from the MER spacecraft in this simulated ... – PowerPoint PPT presentation

Number of Views:37
Avg rating:3.0/5.0
Slides: 23
Provided by: mlin7
Category:

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: Mars Exploration Rovers


1
Mars Exploration Rovers Entry, Descent, Landing
and Deployment
2
Mars Mission Landing Sites
3
The navigation platform separates from the MER
spacecraft in this simulated image.
4
A simulated image of the MER spacecraft as it
enters the Martian atmosphere.
5
The MER spacecraft is protected by a heat shield
as it speeds through the Martian atmosphere.
Aerodynamic forces will slow it to twice the
speed of sound.
6
A simulated image of the MER spacecraft as it
descends over the Valles Marineras canyon system
on Mars.
7
A simulated image of the MER vehicle as it
descends to the Martian surface.
8
A thousand feet above the surface of Mars, a
cluster of airbags inflate around the MER
vehicle.
9
A simulated image of the MER spacecraft as a
supersonic parachute slows its descent to the
Martian surface.
10
Airbags provide a protective cushion for impact
with the Martian surface.
11
1000 FT
Kills downward velocity
Free fall
12
MER Deployment Entire deployment process takes
five sols (Mars days). Scientists and engineers
on Earth want to make sure each step is
successfully completed before moving on to the
next to avoid complications that might arise due
to the angle of the Lander, the abundance of
rocks in the landing area, or other environmental
issues. After the camera mast, antennas, wheels
and solar arrays are deployed, the rover will
send its first radio transmission to Earth.
13
In this simulated image, the Lander structure has
opened and the rover is still tightly folded.
14
Each step of rover deployment is carefully
monitored by scientists and engineers on Earth.
In this simulated image, the rover's front wheels
have yet to be deployed.
15
In this simulated image, rover deployment is
complete. Scientists and engineers can begin to
command the rover.
16
A simulated image of the new Mars rover carrying
the science payload.
17
The rovers are solar powered, so they can only
operate during the Martian day time. They will
sleep during the Martian night.
18
(No Transcript)
19
MER Landing Sites
20
Gusev Crater (GC) - MER Spirit Landing Site
Some scientists believe Mars craters may have
served as beds for ancient lakes. An interesting
feature of the Gusev Crater is the large channel
that enters it from the south. This may have been
a source of water that produced a large lake
within the crater.
21
Meridiani Planum (MP) - MER Opportunity Landing
Site
"Hematite" is an iron-based mineral (iron oxide)
that forms as a result of hydrothermal (water
heat) processes. The presence of hematite usually
(but not always) indicates a history of water
activity. Mars Global Surveyor data shows the
Meridiani Planum site to be rich in hematite
deposits.
22
The Mars Rovers Communicate with Earth Via a
Network of Dish Antennas
  • The Deep Space Network transmits and receives
    Mars rover radio signals through large dish
    antennas at three sites around the world
  • California's Mojave Desert
  • Madrid, Spain
  • Canberra, Australia
  • They are spaced approximately one-third of the
    way around the Earth from each other so that one
    facility is always facing in the right direction
    as our planet rotates.

View of the 70m antenna and the 34m antennas at
the Canberra Deep Space Communications Complex in
Australia.
About PowerShow.com