The Mars Microprobe Mission: A Unique Solution for Network Science

The second deep-space advanced technology validation mission in NASA's New Millennium Program will demonstrate planetary microprobe technologies. Two microprobes, each consisting of a very low-mass aeroshell and penetrator system, are planned to launch in January 1999 and arrive at Mars in December 1999. The 2 kg probes ballistically enter the martian atmosphere at 7.2 km/s and passively orient themselves to meet peak heating and impact requirements. Upon impacting the martian surface at a velocity around 200 mis, the probes will punch through the entry aeroshell and separate into a fore and aftbody system. The forebody will reach a depth of 0.5 to 2 meters, while the aftbody will remain on the surface for communications. Each penetrator system includes a suite of highly miniaturized components needed for future micro-networks: Primary batteries, power electronics, control and data handling microelectronics, telecommunications equipment, an antenna, and a science payload package. This paper will summarize the engineering techniques that will be implemented to provide safe landing and operation of the Mars microprobe in its unique environment. The paper will also summarize some key mission and system design trades, as well as discuss some of the technologies being developed.