SAN JOSE, CA - August 3, 2005 - Blunk Microsystems, a leading developer of embedded file systems, today announced the successful deployment of its NAND flash file system (TargetFFS-NANDô) on the Deep Impact spacecraft launched by NASA's Jet Propulsion Laboratory.
The Deep Impact (https://www.nasa.gov/deepimpact) mission required a NAND flash file system to store images of the comet Tempel 1 before, during, and after the impact, both on the impactor and the flyby spacecraft. The collaboration between NASA's Jet Propulsion Laboratory, in Pasadena, California, and Blunk, began in the first quarter of 2003. TargetFFS-NAND was rigorously tested during the evaluation phase and was selected based on its performance, such as mount time and write speed, and reliability, including power-fail recovery.
Some custom features were added by Blunk Microsystems to accommodate JPL's requirements. The ability to use non-standard page sizes was needed to support the selected NAND cards. Also, an API was added to allow wear leveling to be disabled prior to impact, to maximize write performance while cameras were storing pictures of the comet.
Five TargetFFS-NAND volumes were mounted for the operation. The largest volume (approximately 230Mbytes) was allocated for the images. The others were smaller and were used for files containing telemetry and other flight control information. File sizes ranged from a few bytes for some files to hundreds of kilobytes for the images.
About Blunk Microsystems:
Blunk Microsystems develops and licenses high performance embedded systems software modules, including an RTOS, networking stacks, and advanced file systems. More information is available on the Blunk website at www.blunkmicro.com.