%0 Conference Paper %B 57th Annual Conference, Wichita, Kansas, May 18-20 %D 1998 %T 2417. SWATH Weight Engineering - A Case Study %A Redmond, M %K 13. Weight Engineering - Marine %X Small Waterplane Area Twin Hull (SWATH) ships present a unique challenge to naval architects and weight engineers. While SWATHs are surface ships, from a weight engineering standpoint they are different from conventional surface ships and actually have some features in common with submarines such as the necessity to operate at a constant displacement and the sensitivity to trim. This paper provides insight into the unique aspects of weight engineering on SWATH ships through an example case study. The T-AGOS 23 is the largest SWATH designed and constructed for the U.S. Navy and the experiences of this program will illustrate the unique aspects of a SWATH from the standpoint of weight engineering. %B 57th Annual Conference, Wichita, Kansas, May 18-20 %I Society of Allied Weight Engineers, Inc. %C Wichita, Kansas %P 17 %8 5/18/98 %G eng %U https://www.sawe.org/papers/2417/buy %9 13. WEIGHT ENGINEERING - MARINE %M 2417 %1 Non-Member Price: $20.00; Member Price: $10.00 Members: First 10 product downloads are Free. %2 10.00 %3 20 %4 SAWE2417 %0 Conference Paper %B 50th Annual Conference, San Diego, California, May 20-22 %D 1991 %T 2013. Naval Ships Weight Moment of Inertia %A Dominick Cimino %A Redmond, M %K 13. Weight Engineering - Marine %X This paper discusses the results of an overall effort to enhance mass properties capabilities by the development of a computer tool to calculate weight moment of inertia/gyradius values for naval ships. This capability was incorporated into the Navy's ship design weight estimating family of computer programs (SDWE/UPDAT). This paper provides the documentation necessary to produce weight moment of inertia/gyradius data and provides guidance in estimating as well as calculating inertia values. %B 50th Annual Conference, San Diego, California, May 20-22 %I Society of Allied Weight Engineers, Inc. %C San Diego, California %P 24 %8 5/20/91 %G eng %U https://www.sawe.org/papers/2013/buy %9 13. WEIGHT ENGINEERING - MARINE %M 2013 %1 Non-Member Price: $20.00; Member Price: $10.00 Members: First 10 product downloads are Free. %2 10.00 %3 20 %4 SAWE2013 %0 Conference Paper %B 49th Annual Conference, Chandler, Arizona, May 14-16 %D 1990 %T 1920. Modification of the SDWE System to Calculate Gyradius %A Dominick Cimino %A Huang, K N %A Redmond, M %A Vasquez, D %K 13. Weight Engineering - Marine %X The ability to predict ship motions has become increasingly important over the last several years. This is especially true when considering the number of recent ship designs with unconventional hull forms (i.e., Small WAterplane Twin Hull (SWATH), Surface Effect Ship (SES), etc.). Consequently, the necessity to predict ship motions by calculating the gyradius of the ship in the early stages of a ship design has become essential. The once valid method of using ""rules of thumb"" based on historical data has come into question and is considered unreliable for unconventional hull forms. Instead, the ability to calculate gyradius using the weight estimate is considered an effective and efficient way to accomplish this. Therefore, a Plan of Action and Milestones (POA&M) to develop the design tool to calculate gyradius was initiated. The focus of this effort was to modify the Ship Design Weight Estimating (SDWE) family of programs. The modifications to the computer programs result in the ability to calculate weight moments of inertia for roll, pitch, and yaw (in air) and ultimately in the calculation of the gyradius of the ship in air. %B 49th Annual Conference, Chandler, Arizona, May 14-16 %I Society of Allied Weight Engineers, Inc. %C Chandler, Arizona %P 26 %8 5/14/90 %G eng %U https://www.sawe.org/papers/1920/buy %9 13. WEIGHT ENGINEERING - MARINE %M 1920 %1 Non-Member Price: $20.00; Member Price: $10.00 Members: First 10 product downloads are Free. %2 10.00 %3 20 %4 SAWE1920