The suite of design tools is called Preliminary Analysis of Revolutionary Space Exploration Concepts. PARSEC enables engineers to share design ideas, access the same highly technical information and see the latest test results, all from their desktop computers.

"By evaluating more concepts within a shorter turnaround time, we can review more options early on" said team leader Rob Adams. "And by evaluating concepts in greater detail in the early stages, we can address potential problems more quickly in the design cycle, which saves time and money."

Developers of a single new spacecraft must conceptualize, design, test and integrate numerous sub-systems into the final vehicle to ensure a perfect fit.

Each engineer is responsible for a select number of sub-systems ranging from electrical to life-support. To determine whether or not a sub-system is right for the job, however, the engineer must evaluate that system on a global level.

PARSEC is a central database, into which NASA engineers across the country can tap for up-to-the-minute data from colleagues. Armed with better and more comprehensive information, the engineers can evaluate design concepts earlier in the vehicle design process.

The cycle is self-perpetuating, Adams said, because these early evaluations also are input into the system, fueling better decision-making later in the spacecraft-design process. The system closes the gap sometimes left in traditional concept and architecture mission studies, which often have fewer analytical details and little continuity between individual studies.

"We look for PARSEC to be a valuable resource not only for Marshall Space Flight Center, but other NASA centers as well," said Ed Threet, systems engineering team leader in the Advanced Concepts Office.

"It has been instrumental in completing advanced design studies for nuclear propulsion spacecraft and most recently in lunar exploration architecture definition studies supporting the Vision for Space Exploration."

In addition to data input from engineers across NASA, PARSEC includes design tools and avenues for discussion groups among engineers and scientists -- enabling seasoned design professionals to share insights and further fine-tune the software features.

"Our team intends to produce the best conceptual designs possible in the shortest amount of time," Adams said. "In doing so, we have already reached revolutionary improvements in time and accuracy. We expect to realize even higher improvements in the future as we collaborate with our colleagues around the country."

The developers also see potential for the technology to benefit industry and other governmental agencies, particularly organizations that depend on engineering and manufacturing expertise. Currently, all PARSEC design tools are limited to government and affiliated contractor personnel only.

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