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SkyCrane

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by

Dominik Itner

on 4 December 2013

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Transcript of SkyCrane

Sources
http://spacepioneers.msu.edu/robot_rovers/sojourner.html
http://mars.nasa.gov/msl/multimedia/interactives/learncuriosity/index-2.html
http://mars.jpl.nasa.gov/MPF/mpf/mpfairbags.html
http://www.marsinstitute.info/epo/merfacts.html
http://www.nasa.gov/mission_pages/viking/viking30_fs.html
http://nssdc.gsfc.nasa.gov/nmc/masterCatalog.do?sc=1975-075C
http://www.jpl.nasa.gov/news/fact_sheets/viking.pdf
http://www.nasa.gov/offices/oce/appel/ask/issues/47/47s_sky_crane.html
(Viking I)
(Pathfinder)
?
How to get on Mars?
Dimensions
Consists of 4 airbags, ...
Configuration
... of which each is build from 6 spherical units.
fully inflated <1 s
Dimensions
Why develop Sky Crane?
How does Sky Crane work?
Sky Crane
Too heavy
Sojourner
height: 280 mm
width: 480 mm
length: 630 mm
mass: 11.5 kg
Spirit & Opportunity
mass: 174 kg
height: 1,5 m
width: 1,6 m
length: 2,3 m
Curiosity
mass: 899 kg
height: 2,2 m
width: 2,7 m
length: 3 m
Questions ?
14 minutes
Legged Lander
Airbag Lander
Sky Crane
Maneuver
Maneuver
Legged Lander ?
Airbag Lander ?
Too big, too heavy.
Cannot unfold properly.
Balloons couldn't hold pressure of impact.
Solution
Dust clouds does damage.
Ramp unstable.
Accurate touchdown.
Descent through atmosphere.
Release of Descent Stage.
Constant velocity, then constant deceleration.
Rover separation.
Touchdown.
Controlled crash landing.
6 m
18 m
~ 2s free fall
radio controlled descent
stowed flight configuration
landing configuration
"ready to rove"
~400m
mass: 180 kg
Full transcript