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The rover may occasionally be out of view as it is moved around the clean room.
After an unsuccessful attempted Mars landing in 1999 without definitive information on the cause of the mishap, NASA put a high priority on communication during subsequent Mars landings.
"It is important to capture high-quality telemetry to allow us to learn what happens during the entry, descent and landing, which is arguably the most challenging part of the mission," said Fuk Li, manager of NASA's Mars Exploration Program at JPL.
This artist's concept from an animation depicts Curiosity, the rover to be launched in 2011 by NASA's Mars Science Laboratory, as it is being lowered by the mission's rocket-powered descent stage during a critical moment of the "sky crane" landing in 2012. "The shorter trajectory is optimal for keeping both orbiters in view of Curiosity all the way to touchdown on the surface of Mars.
Image Credit: NASA/JPL-Caltech › Larger image Planners of NASA's next Mars mission have selected a flight schedule that will use favorable positions for two currently orbiting NASA Mars orbiters to obtain maximum information during descent and landing. The longer trajectory allows direct communication to Earth all the way to touchdown." The simplicity of direct-to-Earth communication from Curiosity during landing has appeal to mission planners, in comparison to relying on communications relayed via NASA's Mars Odyssey, which has been orbiting Mars since 2001, and NASA's Mars Reconnaissance Orbiter, in operation since 2006.
“Our JPL team is thrilled to have accomplished this critical radar field test at Dryden,” said Steven Lee, MSL’s Guidance, Navigation, and Control Systems manager.
“The large, flat expanse of Rogers Dry Lake provided an ideal venue for our initial tests.
The Dryden team did a great job accommodating our logistical and flight support needs, from hangar space to flight clearances.
"Preliminary results indicate the radar performs as expected and we look forward to continuing our field tests at other Mars-like sites including Amboy Crater, Cadiz Sand Dunes, and Death Valley," Lee added.
In one flight series, the F/A-18 carried a Quick Test Experimental Pod housing the radar's environmental control hardware to an altitude of 47,000 feet and made a series of dives to simulate a high-speed entry into the Martian atmosphere.
More of these flights are scheduled in the coming months to assist JPL in further verifying the MSL radar performance.
"The trajectory we have selected maximizes the amount of information we will learn to mitigate any problems." Curiosity will use several innovations during entry into the Martian atmosphere, descent and landing in order to hit a relatively small target area on the surface and set down a rover too heavy for the cushioning air bags used in earlier Mars rover landings.