IPPD Through Robust Design Simulation for an Affordable Short Haul Civil Tiltrotor

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Please use this identifier to cite or link to this item: http://hdl.handle.net/1853/6351

Title: IPPD Through Robust Design Simulation for an Affordable Short Haul Civil Tiltrotor
Author: Mavris, Dimitri N. ; Baker, Andrew Paul ; Schrage, Daniel P.
Abstract: Beyond the Bell/Boeing 609, the next step in civil tiltrotor evolution will most likely be a larger capacity vehicle (~ 40 passenger class) similar to NASA? vision of a Short Haul Civil Tiltrotor (SHCT). This vehicle will be designed, built and operated in an era being shaped by today? increased emphasis on affordability. This paper discusses the authors?views on the subject and outlines the steps taken to develop a new methodology which will allow a true assessment of the affordability of such a SHCT. Affordability will not be defined by cost metrics alone. Instead, it will be based on the concept of value and tradeoffs between cost and mission effectiveness; measured by maintainability, reliability, safety, etc. In addition, the motivation for this shift in design philosophy and the resulting need for knowledge to be brought forward in the proposed methodology is reviewed. Furthermore, this shift in knowledge calls for a paradigm shift in the design evolution process based on the realization that decisions made during the early design phases are not deterministic in nature and should therefore be handled probabilistically. The approach taken acknowledges this need and defines a suitable probabilistic design environment. The fundamental building blocks of this method are also outlined and discussed including key concepts, tools, techniques, and the approach taken to implement this process.
Description: Presented at the 53rd Annual Forum of the American Helicopter Society, Virginia Beach, VA, April 29 - May 1, 1997.
Type: Paper
URI: http://hdl.handle.net/1853/6351
Date: 1997-04
Relation: ASDL;AHS-97
Publisher: Georgia Institute of Technology
Subject: Integrated product and process development
Robust design simulations
Tilt rotor aircraft
Aircraft design
Life cycle costs
Decision-making
Probabilistic analysis

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