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Robotic Spacecraft (Astronomy, Planetary, Earth, Solar/Heliophysics) => Mars Science Laboratory (MSL) and Mars 2020 Rover Section => Topic started by: Chris Bergin on 03/29/2006 08:33 PM

Title: Lockheed contract for Mars Science Laboratory (MSL) aeroshell system
Post by: Chris Bergin on 03/29/2006 08:33 PM
http://www.lockheedmartin.com/wms/findPage.do?dsp=fec&ci=17550&rsbci=0&fti=111&ti=0&sc=400
Title: RE: Lockheed contract for Mars Science Laboratory (MSL) aeroshell system
Post by: hyper_snyper on 03/29/2006 09:37 PM
Cool. 

I wonder if this will be a factor in CEV downselect?  Will NASA care that Lockheed designed the MSL aeroshell?
Title: RE: Lockheed contract for Mars Science Laboratory (MSL) aeroshell system
Post by: Jim on 03/30/2006 12:14 PM
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hyper_snyper - 29/3/2006  3:37 PMCool.  

I wonder if this will be a factor in CEV downselect?  Will NASA care that Lockheed designed the MSL aeroshell?

Has no bearing on CEV.  LM has built the aeroshells for Viking, Stardust, Genesis, Pathfinder, Phoenix, and MER. 
Title: RE: Lockheed contract for Mars Science Laboratory (MSL) aeroshell system
Post by: Tap-Sa on 03/30/2006 12:35 PM
Noticed the article mentions sky crane. What's the rationale in it, why not use the proven airbags-bouncing style? Sky crane sure looks more elegant way but also much riskier involving precise control of powered descent, hover and ascent while winching the payload on the surface.
Title: RE: Lockheed contract for Mars Science Laboratory (MSL) aeroshell system
Post by: Jim on 03/30/2006 12:59 PM
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Tap-Sa - 30/3/2006  6:35 AMNoticed the article mentions sky crane. What's the rationale in it, why not use the proven airbags-bouncing style? Sky crane sure looks more elegant way but also much riskier involving precise control of powered descent, hover and ascent while winching the payload on the surface.

Air bags have a mass limit.  The MER rovers were near the max.  The skycrane allows the MSL rover to use its wheels as its landing gear.  This will save some mass.
Title: RE: Lockheed contract for Mars Science Laboratory (MSL) aeroshell system
Post by: Tap-Sa on 03/30/2006 01:17 PM
Will MSL have any means to get back up if it tips over during landing? If not, the lateral velocity limits must be pretty tight.
Title: RE: Lockheed contract for Mars Science Laboratory (MSL) aeroshell system
Post by: Jim on 03/30/2006 01:29 PM
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Tap-Sa - 30/3/2006  7:17 AMWill MSL have any means to get back up if it tips over during landing? If not, the lateral velocity limits must be pretty tight.
No, but the skycrane has lateral movement capability
Title: RE: Lockheed contract for Mars Science Laboratory (MSL) aeroshell system
Post by: Avron on 03/31/2006 05:22 AM
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Jim - 30/3/2006  8:29 AM

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Tap-Sa - 30/3/2006  7:17 AMWill MSL have any means to get back up if it tips over during landing? If not, the lateral velocity limits must be pretty tight.
No, but the skycrane has lateral movement capability

Jim.. did they go for a skid plate or is MSL to land on directly on  the surface?
Title: RE: Lockheed contract for Mars Science Laboratory (MSL) aeroshell system
Post by: Jim on 03/31/2006 06:23 AM
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Avron - 30/3/2006  11:22 PM
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Jim - 30/3/2006  8:29 AM
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Tap-Sa - 30/3/2006  7:17 AMWill MSL have any means to get back up if it tips over during landing? If not, the lateral velocity limits must be pretty tight.
No, but the skycrane has lateral movement capability
Jim.. did they go for a skid plate or is MSL to land on directly on  the surface?

Directly on the wheels