Assessing the impact of sea level rise on port operability using LiDAR-derived digital elevation models

One of the main consequences of climate change is the sea level rise (SLR), which impacts coastal areas affecting many infrastructures, particularly seaports, whose operations may be jeopardized. In this paper, a methodological framework is developed to assess the impact of SLR on port operability by using digital elevation models derived from LiDAR data. The methodology is applied to four ports along the Catalan Coast (NW Mediterranean). The study is made for the RCP8.5 scenario from IPCC, analysing port operability every 10¿years throughout the 21st century. The approach provided here allows a port authority to determine which berthing areas will be affected at each port and at each time interval. Results show that, if no adaptation measures are taken, ports will have significant reductions of present operability for most of their activities, in particular after year 2070. This work shows that the developed methodological framework is a very useful tool for port authorities to detect operability tipping points and to design well in advance the necessary adaptation pathways to overcome the expected impacts.Peer ReviewedPostprint (author's final draft

Analysis of a rotating advanced-technology space station for the year 2025

An analysis is made of several aspects of an advanced-technology rotating space station configuration generated under a previous study. The analysis includes examination of several modifications of the configuration, interface with proposed launch systems, effects of low-gravity environment on human subjects, and the space station assembly sequence. Consideration was given also to some aspects of space station rotational dynamics, surface charging, and the possible application of tethers

Space construction data base

Construction of large systems in space is a technology requiring the development of construction methods to deploy, assemble, and fabricate the elements comprising such systems. A construction method is comprised of all essential functions and operations and related support equipment necessary to accomplish a specific construction task in a particular way. The data base objective is to provide to the designers of large space systems a compendium of the various space construction methods which could have application to their projects

Space Station Program Description Document. Books 1-7

The Space Station Program Description Document is summarized. The six volumes include: (1) introduction and summary; (2) mission description; (3) systems requirements and characteristics; (4) advanced development; (6) system operations; and (7) program plan. Volume 5 was deleted as a separate book

Joint ACCESS: high-speed assault connector (HSAC) for joint expeditionary logistics

Includes suppmentary materialThe current notion of seabasing requires that three Battalion Landing Teams (BLT) of a 2025 Joint Expeditionary Brigade (JEB) need to be able to transit from the Sea Base to the objective within a 10 hour period. Of the three BLTs, two of them must be transported by surface craft a distance of no more than 200nm in sea state 4 or less. The two surface bound BLTs need to be loaded onto the transporting craft and delivered to shore, whether it is a port facility or austere beachhead. There is no current or future system of connectors to meet all the time-distance, sea state, and interface flexibility requirements for this aspect of seabasing. To meet these requirements a High Speed Assault Connector (HSAC) is needed which either augments current or replaces existing connector platforms to deliver and support the required forces ashore. The Joint ACCESS is a HSAC that brings the necessary speed, payload capacity, interface capability, and mission flexibility needed to fill the Sea Base to shore transportation gap. With a maximum speed of 43kts and payload capacity of 800LT, 12 Joint ACCESS trimarans can transit 200nm and fully offload in 7 hours. Its beachable design uses a floating bow ramp to reach out to austere beaches, while its combat system suite provides self defense in addition to robust offensive capabilities.http://web.archive.org/web/20050218202650/http://www.nps.navy.mil/tsse/files/2004.htmApproved for public release; distribution is unlimited

Designing Victoria Harbour: Integrating, Improving, and Facilitating Marine Activities

Victoria Harbour is one of Hong Kong\u27s greatest assets; however, the balance between recreational and commercial uses of the harbour favours commercial uses. Our report, prepared for Designing Hong Kong Ltd., examines this imbalance from the marine perspective. We audited the 50km of waterfront twice and conducted interviews with major stakeholders to assess necessary improvements to land/water interfaces and to provide recommendations on improvements to the land/water interfaces with the goal of making Victoria Harbour a truly living harbour

Space station systems analysis study. Part 2, Volume 3: Appendixes, Book 1. Program requirements documentation

The objective elements representative of the kinds of space activities that will be supported by the space construction base (SCB) are discussed in (1) a brief mission overview including the primary purpose and general objectives; (2) descriptions of the processes involved (where applicable), the mission hardware, the principal activities to be undertaken, the test requirements, and the principal tests; and (3) the SCB requirements including such items as special devices (e.g., fabrication modules, assembly or construction fixtures, cranes, and airlocks), power, data management and communications, waste management, environmental control, safety, and logistics. Each program option is then described in terms of the objective elements it supports, its orbit, the general makeup of the SCB, the transportation approach, and the program schedule goals. The specific requirements that are imposed on the SCB in order to support program option L are given

Telerobotic on-orbit remote fluid resupply system

The development of a telerobotic on-orbit fluid resupply demonstration system is described. A fluid transfer demonstration system was developed which functionally simulates operations required to remotely transfer fluids (liquids or gases) from a servicing spacecraft to a receiving spacecraft through the use of telerobotic manipulations. The fluid system is representative of systems used by current or planned spacecraft and propulsion stages requiring on-orbit remote resupply. The system was integrated with an existing MSFC remotely controlled manipulator arm to mate/demate couplings for demonstration and evaluation of a complete remotely operated fluid transfer system

Wings in Orbit: Scientific and Engineering Legacies of the Space Shuttle, 1971-2010

The Space Shuttle is an engineering marvel perhaps only exceeded by the station itself. The shuttle was based on the technology of the 1960s and early 1970s. It had to overcome significant challenges to make it reusable. Perhaps the greatest challenges were the main engines and the Thermal Protection System. The program has seen terrible tragedy in its 3 decades of operation, yet it has also seen marvelous success. One of the most notable successes is the Hubble Space Telescope, a program that would have been a failure without the shuttle's capability to rendezvous, capture, repair, as well as upgrade. Now Hubble is a shining example of success admired by people around the world. As the program comes to a close, it is important to capture the legacy of the shuttle for future generations. That is what "Wings In Orbit" does for space fans, students, engineers, and scientists. This book, written by the men and women who made the program possible, will serve as an excellent reference for building future space vehicles. We are proud to have played a small part in making it happen. Our journey to document the scientific and engineering accomplishments of this magnificent winged vehicle began with an audacious proposal: to capture the passion of those who devoted their energies to its success while answering the question "What are the most significant accomplishments?" of the longestoperating human spaceflight program in our nation s history. This is intended to be an honest, accurate, and easily understandable account of the research and innovation accomplished during the era

New Navy Fighting Machine in the South China Sea

Through the perspective of Hughes, Wayne P.' missile salvo equation, this research examined naval surface forces of the People's Republic of China (PRC) and the United States (U.S.) in order to demonstrate how American surface combatants can defeat PRC anti-access area denial (A2AD) measures in the South China Sea (SCS). Hughes' equation reveals that advantages for American surface forces are obtained by increasing fleet numbers, counter-targeting (CT), and increased scouting. This thesis advocates fleet growth as articulated in Hughes' New Navy Fighting Machine (NNFM) study. Comparisons of the NNFM, the U.S. fleet, and the PRC fleet demonstrate both the disparity facing the American surface forces, and the near parity obtained in the NNFM. CT through unmanned surface vehicles (USVs), and naval obscurants provide American surface forces increased staying power and tactical advantage. Scouting and communications networking through a theater wide constellation of airships provide the American fleet with persistent situational awareness of the battle space, tactical communications with subsurface forces, and improved emissions control (EMCON) measures for surface forces. The distributive properties of the NNFM, combined with this study's CT and scouting findings, offer American surface combatants success over the PRC Navy in the SCS scenario.http://archive.org/details/newnavyfightingm109457408Lieutenant, United States Navy,Lieutenant, United States Nav