New Naval initiatives, like the DD(X) program, impose stringent noise and vibration targets, and require assessment and reduction of noise due to machinery, flow, and propulsion. A typical surface ship structure exhibits thousands of normal modes below 30Hz. Thus, the frequency range of interest… More

Modern ship designs can only be successful if the ship can survive in a hostile environment. External threats for a ship can originate from underwater detonations, anti-ship missiles, and even low tech weapons like in the terrorist attack of USS Cole. These threats become even more important as… More

The design of Army vehicles to resist blast from a mines or from explosive devices is of great interest in order to provide protection to the vehicle and its occupants. Full size mine blast tests are expensive and time consuming. Using a numerical simulation for predicting the interaction of the… More

Modern ship designs can only be successful if the ship can survive in a hostile environment. External threats for a ship can originate from underwater detonations, anti-ship missiles, and even low tech weapons like in the terrorist attack on USS Cole. These threats become even more important as… More

New Naval initiatives, like the DD(X) program, impose stringent noise and vibration targets, and require assessment and reduction of noise due to machinery, flow, and propulsion. A typical surface ship structure exhibits thousands of normal modes below 30Hz. Thus, the frequency range of interest… More

The physical difficulty of designing entry vehicles originates from the large degree of coupling between the various disciplines involved in the design. Every subsystem design decision has far reaching consequences that must be evaluated in a multidisciplinary fashion in order to assess the impact… More

The design of Army vehicles to resist blast from mines or from explosive devices is of great interest in order to provide protection to the vehicle and its occupants. Full size mine blast tests are expensive and time consuming. Using a numerical simulation for predicting the interaction of the… More

Successful advanced Naval ship design must be based on integrating multiple cross-functional systems. Future Naval systems will require innovation and a systematic integration in order to achieve increasingly demanding mission profiles in a cost effective manner. Since a large amount of the design… More

The physical difficulty of designing entry vehicles originates from the large degree of coupling between the various disciplines involved in the design. Every subsystem design decision has far reaching consequences that must be evaluated in a multidisciplinary fashion in order to assess the impact… More

Computational methods and simulation based methodologies can be combined for optimizing the design of undersea weapons with respect to cost and performance. Multiple engineering disciplines such as: warhead performance, structural-acoustics, sonar performance, guidance and control, electromagnetic… More

The structural design during the early development of an aircraft focuses on strength, fatigue, corrosion, maintenance, inspection, and manufacturing. Usually the acoustic requirements are met after the design of the fuselage structure has been completed. Ideally the structural-acoustic concerns… More

Aircraft design is a complex process requiring interactions and exchange of information among multiple disciplines such as aerodynamics, strength, fatigue, controls, propulsion, corrosion, maintenance, and manufacturing. A lot of attention has been paid during the past fifteen years in the… More

The Navy needs to design new ships capable of accomplishing complex missions at a reduced cost. In order to enable US military response to threats around the world new ships must be designed with improved operational abilities and with capabilities to integrate with other ships and platforms for… More

The US General Accounting Office (USGAO) has identified that capturing design knowledge in terms of expected performance and cost comprises a critical exit requirement for transitioning from system integration to demonstration [GAO-02-701]. The sponsor states "The objective of the UWD&O program is… More

One of the main attributes contributing to the civil competitiveness of rotorcraft, is the continuously increasing expectations for passenger comfort which is directly related with reduced vibration levels and reduced interior noise levels. Such expectations are amplified in the VIP market where… More

One of the main attributes contributing to the competitiveness of rotorcraft, is the continuously increasing expectations for passenger comfort which is directly related with reduced vibration levels and reduced interior noise levels. Such expectations are amplified in the VIP market where people… More

Aircraft design is a complex process requiring interactions and exchange of information among multiple disciplines such as aerodynamics, strength, fatigue, controls, propulsion, corrosion, maintenance, and manufacturing. A lot of attention has been paid during the past fifteen years in the… More

The U.S. Armed forces face the need for rapid deployment from the United States in order to engage regional threats decisively on a global basis. Size and weight are paramount factors for ground combat vehicles supporting this force projection structure. Lighter weight vehicles is an enabling factor… More

The design of an aircraft is a highly iterative process. During the conceptual design phase there is no time for developing detailed simulation models and decisions are typically made either by using low fidelity models or existing data and regression models. However, the decisions made during the… More