His contributions to the MER project were centered on the design and qualification of the supersonic parachute .
He was a member of the highly successful Mars Exploration Rover ( MER ) project that placed two rovers on the surface of Mars in 2004 .
member 's contributions to Mars Exploration Rover MER project were centered on the design and qualification of the supersonic parachute .
He was a member of the highly successful Mars Exploration Rover ( MER ) project that placed two rovers on the surface of Mars in 2004 .