%0 Conference Paper %B 62nd Annual Conference, New Haven, Connecticut %D 2003 %T 3303. Evolutionary Feature Based Weight Prediction %A Anna Baker %A Douglas Smith %K 23. Weight Engineering - Structural Estimation %X Many weight prediction methods operate ?analytically,? deriving an ideal structural weight, and then accounting for non-optimum structural penalties using a factoring approach. This paper presents an alternative weight prediction philosophy that combines elements of traditional mass accounting with estimated sizing data to produce detailed and accurate weights; the component weight is calculated from a set of detailed parameters using a simplified traditional accounting method. These detailed parameters describe the predicted design of the particular component in its entirety, identifying and sizing all features. The large number of detailed parameters required would normally preclude the use of this method during the early project phases ? where weight prediction is most valuable. However, these detailed parameters can be obtained using their respective driving parameters. A generative design approach allows the prediction of relevant features. Using parametric relationships based upon initial load estimates enables the prediction of detailed sizing. The result is a versatile method which can be implemented at any stage of a project to generate predicted weights. The resulting weights contain correct causality for ideal structural weight and simultaneously integrate weight resulting from manufacturing constraints and other design considerations. Other benefits of this method include being able to identify the true weight drivers of a component and ascertain the weight impact of particular design alterations and manufacturing methods. %B 62nd Annual Conference, New Haven, Connecticut %I Society of Allied Weight Engineers, Inc. %C New Haven, Connecticut %P 23 %8 5/17/03 %G eng %U https://www.sawe.org/papers/3303/buy %9 23. WEIGHT ENGINEERING - STRUCTURAL ESTIMATION %M 3303 %1 Non-Member Price: $20.00; Member Price: $10.00 Members: First 10 product downloads are Free. %2 10.00 %3 20 %4 SAWE3303 %0 Conference Paper %B 60th Annual Conference, Arlington, Texas, May 19-23 %D 2001 %T 3146. Predictive Weight Accounting Within a Multidiciplinary Engineering Organisation %A Douglas Smith %A Cheeseman %K 17. Weight Engineering - Procedures %X There is an obvious requirement to maintain and document Aircraft weight at all stages of an Aircraft project. The standard of information available to the weight engineer changes, becoming gradually more detailed as the project continues. Different weight capturing methods are suited to particular phases of a project and provide subtly different types of weight data. In the early phases of a project there is no particular specific design available. Data takes the form of a list of project requirements and some engineering solutions which detail how certain aspects of that design are to be realised. In this phase of a project, the weight engineer is providing a predicted weight, not the weight of a particular design instance. He is telling the project what a design should weigh, not what a particular design does weigh. This activity is supported by a varied selection of weight prediction methods, which are examined in this paper. %B 60th Annual Conference, Arlington, Texas, May 19-23 %I Society of Allied Weight Engineers, Inc. %C Arlington, Texas %P 21 %8 5/19/01 %G eng %U https://www.sawe.org/papers/3146/buy %9 17. WEIGHT ENGINEERING - PROCEDURES %M 3146 %1 Non-Member Price: $20.00; Member Price: $10.00 Members: First 10 product downloads are Free. %2 10.00 %3 20 %4 SAWE3146