Skip to main content

Team Runs Operational Test to Prepare for Extracting Spirit



NASA's Mars Exploration Rover Spirit recorded this forward view of its arm and surroundings during the rover's 2,052nd Martian day, or sol (Oct. 11, 2009).
› Full image and caption

October 19, 2009
Engineers using test rovers on Earth to prepare for extracting the sand-trapped Spirit rover on Mars have added a new challenge to their preparations.

Until last week, the engineers commanding and assessing drives by the test rovers were usually in the same room as the sandbox setup simulating Spirit's predicament, where they can watch how each test goes. That changed for the latest preparation, called an operational readiness test.

The team members commanding drives by a test rover last week stayed away from the building with the sandbox. They assessed the results of each commanded drive only from the images and other data communicated from the test rover, the same way the team does for daily operations of the rovers that are on Mars.

"We conducted this round of testing under more flight-like conditions to test the team's ability to make very complex extraction driving decisions using only the data sent back from the rover," said Mars Exploration Rover Project Manager John Callas of NASA's Jet Propulsion Laboratory, Pasadena, Calif.

The test began on Oct. 12 and ran five days on an accelerated schedule of two Martian days' worth of commanding every day. The rover team also operated both Spirit and its twin, Opportunity, while conducting this readiness test at JPL.

Spirit became embedded in soft soil at a site called "Troy" five months ago, more than five years into a mission on Mars that was originally scheduled to last for three months. The rover team suspended further driving attempts with Spirit while evaluating possibilities from tests performed at JPL simulating the Troy situation.

Current plans call for an independent panel to review Spirit driving plans in late October, following analysis of results from the readiness test. Unless that review recommends any further preparations, Spirit will probably begin extraction moves within two weeks after the review.

Spirit has spent much of its time at Troy actively examining its surroundings, including analysis of layered soil at the site. In September, a new issue began affecting operations. Data from Spirit indicated that a brake on the motor that rotates the rover's dish-shaped high-gain antenna was not working correctly. The team has been getting more diagnostic data and developing a work-around strategy similar to work-arounds already used for rover-motor brakes that showed similar symptoms earlier.

For more updates, please visit the Free Spirit site: http://www.jpl.nasa.gov/freespirit/

Comments

Popular posts from this blog

Kerala boat tragedy: Thirty five bodies have been fished out of the water

THEKKADY / KOCHI: A thick veil of grief descended on the famed tourist spot of Thekkady on Wednesday when Kerala witnessed its worst ever boat tragedy in the Mullaperiyar waters as the KTDC’s Jalakanyaka, carrying about 76 passengers, sank. Thirty five bodies have been fished out of the water. Any hope of finding more tourists alive faded with the daylight even as rescue personnel continued their desperate search. The two-deck boat, commissioned just a month back, was returning to the boat landing after an hour-long sight-seeing trip when tragedy struck. All the passengers on the upper deck apparently rushed to one side of the boat to take photos of a lone bison spotted on the shore. At the same time many from the lower deck flocked to the top leaving the lower almost empty. This movement and the uneven distribution of weight caused the boat to overbalance and turn turtle. Those remaining on the lower deck were trapped inside while about 20 on the upper deck were rescued by other boa

Special Status For Jammu & Kashmir Scraped: 5 Points About Article 370

Jammu & Kashmir will also be "reorganized," Home Minister Amit Shah said as talks about the state being trifurcated into three separate fields- Jammu, Kashmir and Ladakh NEW DELHI: Article 370, which gives Jammu & Kashmir unique status, will be withdrawn this morning in parliament, Home Minister Amit Shah said . The announcement came after his cabinet meeting at his house this morning was held by Prime Minister Narendra Modi . Article 370 is a ' temporary provision ' granting special autonomous status to Jammu & Kashmir . It allows the state to draft its own Constitution and restricts the legislative powers of the parliament over the state. The government therefore requires state government approval for all legislation, except those related to defence, foreign affairs, finance, and communications. Parliament can not also improve or decrease the boundaries of the State under Article 370 As a consequence, citizens of Jammu & Kashmir

Enai Nokki Paayum Thotta Movie Review: Tiring and Unsatisfying

Movie Rating: 3/5 First of all things! The director's weakest film is the long delayed Enai Noki Paayum Thotta by Gautham Menon . The film's main weakness is the director's fascination with narrative style voice-over. It was good before Gautham used voice-over as a medium to tell his stories, but every scene in Enai Nokki Paayum Thotta begins and ends with Dhanush's voice-over, which irritates us after a point. The film is filled with tired stereotypes, and at a runtime of 157 minutes it is an unsatisfying watch. Like any other movie from Gautham Menon, here too hero Raghu (Dhanush) is a student of engineering, but this time his wife is not a student, but a film heroine Lekha ( Mega Akash ).She tells him she is not interested in movies and her boss Kuberan (Senthil Veeraswamy) coerced her into the profession for money (it looks like the girl is an orphan and Kuberan supported her studies and is her guardian). Raghu takes her to his Pollachi house and introduc