Mark A. Hale

A Stochastic Approach to Multi-disciplinary Aircraft Analysis and Design

Presented at the 36th Aerospace Sciences Meeting and Exhibit, Reno, NV, January 12-15, 1998.

PRELIMINARY DEVELOPMENT OF AGENT TECHNOLOGIES FOR A DESIGN INTEGRATION FRAMEWORK

Presented at the 5th AIAA/NASA/USAF/ISSMO Symposium on Multidisciplinary Analysis and Optimization, Panama City, FL, September 7-9, 1994.

DREAMS and IMAGE: A Model and Computer Implementation for Concurrent, Life-Cycle Design of Complex Systems

Computing architectures are being assembled that extend concurrent engineering practices by providing more efficient execution and collaboration on distributed, heterogeneous computing networks Built on the successes of Initial architectures, requirements for a next- generation design computing infrastructure can be developed These requirements concentrate on those needed by a designer in decision mak ing processes from product conception to recycling and can be categorized in two areas design process and design information management A designer both designs and executes design processes throughout design time to achieve better product and process capabilities while ex pending fewer resources In order to accomplish this, information, or more appropriately design knowledge, needs to be adequately managed during product and process decomposition as well as recomposition A foundation has been laid that captures these requirements in a design architecture called DRE AMS (Developing Robust Engineering Analysis Models and Specifications) In addition, a computing infrastructure, called IMAGE (Intelligent Multidisciplinary Aircraft Generation Environment), is being developed that satisfies design requirements defined in DREAMS and incorporates enabling computational technologies

Use of Agents to Implement an Integrated Computing Environment

Integrated Product and Process Development (IPPD) embodies the simultaneous application to both system and quality engineering methods throughout an iterative design process. The use of IPPD results in the time-conscious, cost-saving development of engineering systems. To implement IPPD, a Decision-Based Design perspective is encapsulated in an approach that focuses on the role of the human designer in product development. The approach has two parts and is outlined in this paper. First, an architecture, called DREAMS, is being developed that facilitates design from a decision-based perspective. Second, a supporting computing infrastructure, called IMAGE, is being designed. Agents are used to implement the overall infrastructure on the computer. Successful agent utilization requires that they be made of three components: the resource, the model, and the wrap. Current work is focused on the development of generalized agent schemes and associated demonstration projects. When in place, the technology independent computing infrastructure will aid the designer in systematically generating knowledge used to facilitate decision-making.

Conceptual Aircraft Design Environment: Case Study Evaluation of Computing Architecture Technologies

Presented at the 7th AIAA/USAF/NASA/ISSMO Symposium on Multidisciplinary Analysis and Optimization, St. Louis, MO, September 2-4, 1998.

Techniques for Integrating Computer Programs into Design Architectures

Presented at the 6th AIAA/NASA/USAF/ISSMO Symposium on Multidisciplinary Analysis and Optimization, Bellevue, WA, September 4-6, 1996.

Elements of an Emerging Virtual Stochastic Life Cycle Design Environment

Presented at the 4th World Aviation Congress and Exposition, San Francisco, CA, October 19-21, 1999.

The Implementation of a Conceptual Aerospace Systems Design and Analysis Toolkit

The Conceptual Aerospace Systems Design and Analysis Toolkit (CASDAT) provides a baseline assessment capability for the Air Force Research Laboratory. The historical development of CASDAT is of benefit to the design research community because considerable effort was expended in the classification of the analysis tools. Its implementation proves to also be of importance because of the definition of assessment use cases. As a result, CASDAT is compatible with accepted analysis tools and can be used with state-ofthe-art assessment methods, including technology forecasting and probabilistic design.

Enabling Advanced Design Methods in an Internet-Capable Framework

The enabling of advanced design methods in an internet-capable framework will be discussed in this paper. The resulting framework represents the next generation of design and analysis capability in which engineering decision-making can be done by geographically distributed team members. A new internet technology called the lean-server approach is introduced as a mechanism for granting Web browser access to frameworks and domain analyses. This approach has the underpinnings required to support these next generation frameworks ‐ collaboratories. A historical perspective of design frameworks is discussed to provide an understanding of the design functionality that is expected from framework implementations to insure design technology advancement. Two research areas were identified as being important to the development of collaboratories: design portals and collaborative methods. An internet-enabled design framework called IMAGE is highlighted and demonstrated using a probabilistic design example. The prototyped methods have found their way into a Conceptual Aerospace Systems Design and Analysis Toolkit used by the Air Force Research Laboratory.