NASA GRC (7820) has developed a multi-site, multi-user design environment
for the design and analysis of full multi-vehicle mission architectures.
This design environment is called the Global Integrated Design Environment
(GLIDE). The GLIDE is built upon the http protocol and is therefore firewall
friendly. Various aspects of the http protocol are used within the GLIDE to
enable file sharing and database publishing/subscribing with inherent data
The GLIDE uses the hierarchical file structure, inherent to all modern
computer systems, to represent vehicles and/or systems. Through the use of
emerging firewall friendly file sharing protocols, such as WebDAV, it is
possible to share these hierarchical vehicle and system models across the
globe. Multiple users within the design environment can collaboratively
modify these shared hierarchical models, just as it is possible for multiple
users to add and delete files on a file server.
The GLIDE additionally hosts an online database that can receive and publish
data over the http protocol. This capability allows design information to be
shared among various systems analysts in both a synchronous and asynchronous
fashion. The GLIDE database can be queried and updated from an MS Excel
interface with the use on a helper application that runs alongside MS Excel.
The helper application additionally allows users to view the activity of
others on the system and the age of the data stored in the database.
The GLIDE uses the hierarchical structure to create an automatic naming
convention, similar to that used to name files on a computer system.
Combining the hierarchy based naming convention with the database
publish/subscribe capability creates a very powerful distributed modeling
The GLIDE sets up a framework to model and share data about the design of
systems and vehicles. System models are still required the size and design
vehicles and systems within an architecture design.
The systems analysis branch has been instrumental in developing and testing the GLIDE environment as well as establishing the teaming necessary to use the environment.
GLIDE Sessions to date
NASA Technical Papers and Reports
Points of Contact
- Leon Gefert (email@example.com)
Other Links of Interest to GLIDE