Space

September 14, 2012

Mars rover Curiosity arm tests nearly complete

NASA’s Mars Curiosity team is almost finished robotic arm tests in preparation for the rover to touch and examine its first Martian rock.

Tests with the 7-foot (2.1-meter) arm have allowed the mission team to gain confidence in the arm’s precise maneuvering in Martian temperature and gravity conditions. During these activities, Curiosity has remained at a site it reached by its most recent drive on Sept. 5. The team will resume driving the rover this week and use its cameras to seek the first rock to touch with instruments on the arm.

“We’re about to drive some more and try to find the right rock to begin doing contact science with the arm,” said Jennifer Trosper, Curiosity mission manager at NASA’s Jet Propulsion Laboratory in Pasadena, Calif.

Two science instruments – a camera called Mars Hand Lens Imager that can take close-up, color images and a tool called Alpha Particle X-Ray Spectrometer that determines the elemental composition of a target rock – have passed preparatory tests at the rover’s current location. The instruments are mounted on a turret at the end of the arm and can be placed in contact with target rocks.

Curiosity’s Canadian-made APXS had taken atmospheric readings earlier, but its first use on a solid target on Mars was this week on a calibration target brought from Earth. X-ray detectors work best cold, but even the daytime APXS tests produced clean data for identifying elements in the target.

“The spectrum peaks are so narrow, we’re getting excellent resolution, just as good as we saw in tests on Earth under ideal conditions,” said APXS principal investigator Ralf Gellert of the University of Guelph in Guelph, Ontario, Canada. “The good news is that we can now make high-resolution measurements even at high noon to support quick decisions about whether a sample is worthwhile for further investigations.”

The adjustable-focus MAHLI camera this week has produced sharp images of objects near and far, “Honestly, seeing those images with Curiosity’s wheels in the foreground and Mount Sharp in the background simply make me cry,” said MAHLI principal investigator Ken Edgett of Malin Space Science Systems in San Diego. “I know we’re just getting started, but it’s already been an incredible journey.”

MAHLI is also aiding evaluation of the arm’s ability to position its tools and instruments. Curiosity moved the arm to predetermined “teach points” Sept. 11, including points above each of three inlet ports where it will later drop samples of soil and powdered rock into analytical instruments inside the rover. Images from the MAHLI camera confirmed the placements. Photos taken before and after opening the inlet cover for the chemistry and mineralogy (CheMin) analytical instrument also confirmed good operation of the cover.

“Seeing that inlet cover open heightens our anticipation of getting the first solid sample into CheMin in the coming weeks,” said CheMin principal investigator David Blake of NASA’s Ames Research Center in Moffett Field, Calif.

A test last week that checked X-rays passing through an empty sample cell in CheMin worked well. It confirmed the instrument beneath the inlet opening is ready to start analyzing soil and rock samples.

Curiosity is five weeks into a 2-year prime mission on Mars. It will use 10 science instruments to assess whether the selected field site inside Gale Crater has ever offered environmental conditions favorable for microbial life.

 




All of this week's top headlines to your email every Friday.


 
 

 
ATK

ATK completes installation of world’s largest solid rocket motor for ground test

ATK The first qualification motor for NASA’s Space Launch Systems booster is installed in ATK’s test stand in Utah – ready for a March 11 static-fire test. NASA and ATK have completed installing the first Spac...
 
 
ULA photograph

Third Lockheed Martin-built MUOS satellite launched, responding to commands

ULA photograph The U.S. Air Force’s 45th Space Wing successfully launched the third Mobile User Objective System satellite, built by Lockheed Martin, for the U.S. Navy at 8:04 p.m. Jan. 20, 2015, from Launch Complex 41 at...
 
 
ULA photograph

ULA successfully launches Navy’s Mobile User Objective System-3

ULA photograph The U.S. Air Force’s 45th Space Wing successfully launched the third Mobile User Objective System (MUOS) satellite, built by Lockheed Martin, for the U.S. Navy at 8:04 p.m. Jan. 20, 2015, from Launch Comple...
 

 

Aerojet Rocketdyne Propulsion supports launch, flight of third MUOS satellite

Aerojet Rocketdyne played a critical role in successfully placing the third of five planned Mobile User Objective System (MUOS-3) satellites, designed and built by Lockheed Martin, into orbit for the U.S. Navy. The mission was launched from Cape Canaveral Air Force Station in Florida aboard a United Launch Alliance Atlas V rocket, with five Aerojet...
 
 
LM-MUOS-satellite

U.S. Navy poised to Launch Lockheed Martin-built MUOS-3 satellite

The U.S. Navy and Lockheed Martin are ready to launch the third Mobile User Objective System satellite, MUOS-3, from Cape Canaveral Air Force Station, Fla., Jan. 20 aboard a United Launch Alliance Atlas V rocket. The launch win...
 
 

NASA, NOAA find 2014 warmest year in modern record

https://www.youtube.com/embed/-ilg75uJZZU?enablejsapi=1&rel=0 The year 2014 ranks as Earth’s warmest since 1880, according to two separate analyses by NASA and National Oceanic and Atmospheric Administration scientists. The 10 warmest years in the instrumental record, with the exception of 1998, have now occurred since 2000. This trend continues a long-term warming of the planet, acc...
 




0 Comments


Be the first to comment!


Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>