NASA delays Mars rover launch to 2011
Technical problems make the planned 2009 launch impossible, officials say. The delay will add $400 million to the cost of the mission and might result in layoffs at JPL.
The launch of NASA's SUV-sized, next-generation Mars rover has been delayed for two years due to continuing technical problems and cost overruns, the space agency announced today.
Originally scheduled to launch late next year, the mission will now take place in 2011, officials said at a media briefing at NASA headquarters in Washington, D.C.
"We ran out of time," Charles Elachi, director of the Jet Propulsion Laboratory in La Cañada Flintridge, where the rover is being built, said in a phone interview.
The new rover, known as the Mars Science Laboratory, is one of the most challenging projects that NASA has ever undertaken.
The craft will carry an instrument payload 10 times heavier than the twin rovers Spirit and Opportunity, which landed on Mars in 2004.
Like its cousins, MSL will be mobile and, with a 43-inch-high deck, it will be able to drive right over obstacles that deterred earlier generations of rovers.
The mission is designed to explore the planet's potential for habitability, both now and in the ancient past. A landing site has not yet been chosen. Mission scientists are looking at several sites where orbiting spacecraft have seen evidence of wet conditions in the past.
Because of its large size, the craft employs a complex landing system, which uses a hovering rocket to lower the 2,000-pound rover on a tether as it nears the surface, similar to lowering a piano from an upper-story apartment.
It was a much more mundane set of challenges that forced the delay. Problems developed in the design and operation of 31 actuators -- combination motors and gearboxes that control the mechanical parts of the craft, including the steering mechanism, the robotic arm and the drill that will bore into Martian rocks.
For a time, Elachi said, JPL engineers hoped they could solve the problems and still make the 2009 launch date. But mission managers finally decided they couldn't take a chance with such a complex and costly venture.
"We want to avoid a mad dash to launch," said Ed Weiler, associate administrator for NASA's Science Mission Directorate. "Failure is not an option on this mission."
Elachi said his team at JPL was fully committed to the 2009 launch date. Engineers "have worked their tails off to make that happen," he said. "Unfortunately we came up a little short."
Because missions to Mars can only launch every two years, when the planet and Earth are in proper alignment, the delay meant the earliest substitute launch date would be 2011.
