Concept Exploration Methods for the Small Surface Combatant

2015 ◽  
Author(s):  
Matt Garner ◽  
Norbert Doerry ◽  
Adrian MacKenna ◽  
Frank Pearce ◽  
Chris Bassler ◽  
...  
Keyword(s):  
Task Force ◽  
Design Approach ◽  
Small Surface ◽  
Design Concepts ◽  
Concept Exploration ◽  
Surface Combatant ◽  
Set Based Design ◽  
Littoral Combat Ship

In 2014, the Small Surface Combatant Task Force completed an innovative study on alternate proposals to procure a capable and lethal small surface combatant. Modified Littoral Combat Ship (LCS) concepts, new design concepts, and existing design concepts were examined. This paper describes the set-based design approach employed to conduct this study.

Concept Exploration of the Amphibious Combat Vehicle

2014 ◽  
Author(s):  
John Burrow ◽  
Norbert Doerry ◽  
Mark Earnesty ◽  
Joe Was ◽  
Jim Myers ◽  
...  
Keyword(s):  
Design Method ◽  
High Water ◽  
The United States ◽  
United States Marine Corps ◽  
Concept Exploration ◽  
Technical Risk ◽  
Combat Vehicle ◽  
Set Based Design ◽  
Water Speed ◽  
Study Plan

In 2013, the United States Marine Corps (USMC) conducted a study to determine the technical feasibility and affordability of a High Water Speed Amphibious Combat Vehicle, quantify performance, determine capability tradeoffs that can be made to reduce cost and reduce technical risk, and compare capabilities with those of a Low Water Speed variant. This paper describes the organizational structure, the study plan, and the innovative Set-Based Design method used by the ACV Directorate to conduct the study.

Concept Exploration of a Surface Effect Patrol Combatant Using a Multiobjective Synthesis Model

2021 ◽  
Author(s):  
Harry P. Crosby ◽  
Katherine E. Zalegowski ◽  
Raphael Christian C. Batto
Keyword(s):  
High Speed ◽  
Surface Effect ◽  
Optimization Techniques ◽  
Concept Design ◽  
Highly Nonlinear ◽  
Concept Exploration ◽  
3D Geometry ◽  
Objective Space ◽  
Surface Combatant ◽  
And Performance

This paper demonstrates a concept design methodology for naval SESs that is adapted from modern surface combatant optimization techniques. Similar to current methods, a synthesis model is constructed that uses a variety of discrete and continuous input values to calculate ship characteristics and performance data. The model outputs are generated using a combination of first-principles and exact 3D geometry along with parametrics aggregated from conventional monohulls and SES historical data. A specifically formulated multiobjective genetic algorithm is integrated with the model. The algorithm explores the highly nonlinear and non-convex SES objective space to identify non-dominated design variants. The synthesis model and the associated design space for a patrol boat with a novel SES hullform is detailed. Tradeoffs are evaluated in objective criteria of cost and performance in high-speed littoral operations that include surveillance, reconnaissance, and surface warfare.

Preserving Logistical Support for Deployed Battle Groups in Hostile Environments

2019 ◽  
pp. 225-267
Author(s):  
Brian Colburn ◽  
Emily Craparo
Keyword(s):  
High Speed ◽  
Task Force ◽  
Safe Environment ◽  
New Class ◽  
Supply Line ◽  
The Pacific ◽  
Main Component ◽  
Littoral Combat Ship ◽  
Hostile Environments ◽  
The U.S

The U.S. Navy's at-sea replenishment system is a mobile supply line designed to support the deployed carrier task force (CTF)/cruiser/destroyer (CRUDES) surface action group (SAG) and forward deployed units while at sea. In the Pacific, the main component of the mobile supply line, the combat logistics force (CLF) ship, has become a possible target with the development of the anti-ship ballistic missile. With the ability to target and disable a CLF, an enemy can now disable a deployed CTF/CRUDES fleet by eliminating its required resources. With the goal of preserving the CLF's capabilities to perform its mission while avoiding ASBM threat, the authors consider the possibility of utilizing a “mini-CLF” to shuttle fuel between CLFs operating in a safe environment and warships operating in a threat zone. The authors perform two analyses: they (1) analyze the feasibility of using the Littoral combat ship/joint high-speed vessel, reconfigured as a shuttle to transport resources, and (2) analyze requirements for development of a new class of ships to support the CTF/CRUDES SAG while deployed in the Pacific.

Littoral Combat Ship (LCS) Characteristics Task Force

2002 ◽  
Author(s):  
Carl Carlson ◽  
Bradd C. Hayes ◽  
Hank Kamradt ◽  
Gregg Hoffman
Keyword(s):  
Task Force ◽  
Littoral Combat Ship

Demonstrating set-based design techniques: an unmanned aerial vehicle case study

2019 ◽  
Vol 17 (4) ◽  
pp. 339-355 ◽  
Author(s):  
Colin Small ◽  
Gregory S Parnell ◽  
Ed Pohl ◽  
Simon R Goerger ◽  
Matthew Cilli ◽  
...  
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Future Research ◽  
Trade Off ◽  
Design Concepts ◽  
Systems Research ◽  
Aerial Vehicle ◽  
Engineering Changes ◽  
Set Based Design ◽  
Tradespace Exploration

The Engineered Resilient Systems research program seeks to improve decision making in the Analysis of Alternatives process by leveraging model-based engineering (MBE) early in the design process to develop more resilient systems. Traditional tradespace exploration using point-based design often converges quickly to an initial baseline design concept with subsequent engineering changes to modify the design. However, this process can lead to significant cost growth if the initial concept is not able to meet requirements or if the revised design is not affordable. Enabled by MBE, set-based design (SBD) considers sets of all possible design concepts and down-selects design concepts to converge to a final design using insights into design trade-off analysis, modeling and simulation, and test data. Using a notional unmanned aerial vehicle case study with low-fidelity physics-based models and an open source Excel® add-in called SIPmath©, this research implements an integrated MBE trade-off analytics framework that simultaneously generates numerous SBDs using parametric performance and cost models and evaluates the designs in the value and cost tradespace. In addition, this research explores incorporating resilience quantification and uncertainty into SBD trade-off analysis. Future research is needed to validate the use of SBD with low-fidelity models for tradespace exploration in early system design.

scholarly journals Preliminary Assessment of a Novel Watchstanding Schedule for a Crew on a Small Surface Combatant of the United States Navy

2019 ◽  
Vol 63 (1) ◽  
pp. 933-937
Author(s):  
Panagiotis Matsangas ◽  
Nita Lewis Shattuck
Keyword(s):  
United States ◽  
United States Navy ◽  
The United States ◽  
Daily Activities ◽  
Global Score ◽  
Preliminary Assessment ◽  
Small Surface ◽  
Workload Management ◽  
Daily Schedule ◽  
Surface Combatant

We assessed the utility of a fixed, 3-section, watchstanding schedule in a small surface combatant of the United States Navy. Sailors on the “5 hrs-daytime/3 hrs-nighttime” or “D5/N3” schedule stood two watches every day, one a 5-hour daytime shift and one a 3-hour nighttime shift. Crewmembers (N = 27) completed a questionnaire while the ship was underway to assess the utility and the crew’s acceptance of the D5/N3. Crewmembers reported sleeping 5.6 ± 1.3 hours daily. The average PSQI Global score was 8.3 ± 3.5, with ~81% of the participants identified as “poor sleepers.” Approximately 94% of the respondents noted that the D5/N3 was either better (53%) or the same (41%) compared to their previous watch schedule. The predictability of the daily schedule, the ability to plan daily activities, the adequacy of time to complete watch duties, the availability of time for off-watch duties/shipboard-departmental qualifications, and higher alertness/better ability to focus were considered the strengths of the D5/N3. Overall, the D5/N3 has the potential to be a useful alternative to existing 3-section watch standing schedules in terms of crew alertness levels, acceptance by the crewmembers, and workload management when working in a Navy vessel. Because it is a novel schedule, however, more effort should be focused on how to best implement the D5/N3 on a ship, and on the factors that affect its use at sea.

scholarly journals Ergonomic Living-Dining Room Design to Enhance Assisted Living for Elderly People in Indonesia

2013 ◽  
Vol 10 ◽  
pp. 51-56
Author(s):  
Johanna Renny Octavia ◽  
Maria Stephanie Widjaja
Keyword(s):  
Elderly People ◽  
Assisted Living ◽  
Participatory Design ◽  
Aging Population ◽  
Design Concept ◽  
Design Approach ◽  
User Requirements ◽  
Design Concepts ◽  
Room Design ◽  
Dining Room

The aging population calls for more research efforts towards enhancing assisted living for elderly people living in Indonesia, including ergonomic housing that accommodates their characteristics and needs. This paper discusses a study to provide an ergonomic living-dining room design in elderly homes by applying the participatory design approach with six Indonesia elders. Through interviews and observations, a list of elderly user requirements was defined as a foundation to generate a number of design concepts. Furthermore, one design concept was selected and refined by applying the anthropometry data.

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