Application of ground test acoustic simulations of liftoff and transonic vibration to actual Ranger flight vibration data

Ground test acoustic simulation of liftoff and transonic vibration applied to Ranger flight vibration dat

Hybrid vehicle assessment. Phase 1: Petroleum savings analysis

The results of a comprehensive analysis of near term electric hybrid vehicles are presented, with emphasis on their potential to save significant amounts of petroleum on a national scale in the 1990s. Performance requirements and expected annual usage patterns of these vehicles are first modeled. The projected U.S. fleet composition is estimated, and conceptual hybrid vehicle designs are conceived and analyzed for petroleum use when driven in the expected annual patterns. These petroleum consumption estimates are then compared to similar estimates for projected 1990 conventional vehicles having the same performance and driven in the same patterns. Results are presented in the form of three utility functions and comparisons of sevral conceptual designs are made. The Hybrid Vehicle (HV) design and assessment techniques are discussed and a general method is explained for selecting the optimum energy management strategy for any vehicle mission battery combination. Conclusions and recommendations are presented, and development recommendations are identified

Bounding an Optimal Search Path with a Game of Cop and Robber on Graphs

Abstract. In search theory, the goal of the Optimal Search Path (OSP) problem is to find a finite length path maximizing the probability that a searcher detects a lost wanderer on a graph. We propose to bound the probability of finding the wanderer in the remaining search time by relaxing the problem into a stochastic game of cop and robber from graph theory. We discuss the validity of this bound and demonstrate its effectiveness on a constraint programming model of the problem. Ex-perimental results show how our novel bound compares favorably to the DMEAN bound from the literature, a state-of-the-art bound based on a relaxation of the OSP into a longest path problem

Hybrid vehicle assessment. Phase I. Petroleum savings analysis

This report presents the results of a comprehensive analysis of near-term electric-hybrid vehicles. Its purpose was to estimate their potential to save significant amounts of petroleum on a national scale in the 1990s. Performance requirements and expected annual usage patterns of these vehicles were first modeled. The projected US fleet composition was estimated, and conceptual hybrid vehicle designs were conceived and analyzed for petroleum use when driven in the expected annual patterns. These petroleum consumption estimates were then compared to similar estimates for projected 1990 conventional vehicles having the same performance and driven in the same patterns. Results are presented in the form of three utility functions and comparisons of several conceptual designs are made. The Hybrid Vehicle (HV) design and assessment techniques are discussed and a general method is explained for selecting the optimum energy management strategy for any vehicle-mission-battery combination. A discussion of lessons learned during the construction and test of the General Electric Hybrid Test Vehicle is also presented. Conclusions and recommendations are presented, and development recommendations are identified

ANDRILL’s Education and Outreach Programme 2005‑2008: MIS and SMS Project Activities during the 4th IPY

A key goal of the ANDRILL programme’s education and outreach (E&O) activities was to engage the public in, and inform it about, our scientific endeavour to uncover the behavior of Antarctica’s ice sheets over the past 20 million years. We recognized that a critical component of ANDRILL’s research effort was to ensure that our motivation, methods, and results were conveyed to non-experts in a clear and understandable manner. This effort benefited from several factors: a synergy between scientists and educators generated by the 4th International Polar Year (IPY); the allure of the Antarctic region as one of Earth’s few remaining frontiers; a desire to understand and respond accurately to climate change discussions; and the interest of many nations and institutions to enhance science and environmental literacy in schools and across broad public audiences. In order to achieve ANDRILL’s E&O objectives, we developed a diverse range of education and outreach projects, established key partnerships with a range of informal science education outlets, implemented a communication network of educators and scientists, and sparked the curiosity and interest of students while promoting understanding and a prospect of continuing engagement. A central component of ANDRILL’s E&O activity, the on-ice ANDRILL Research Immersion for Science Educators (ARISE) programme enabled 16 science educators to participate in ANDRILL’s scientific activities and gain first-hand experience in a multi-national scientific drilling programme. ARISE participants then used knowledge gained from this experience to develop innovative and exciting learning approaches for the public. Partnerships with established teaching and learning institutions and programmes provided excellent opportunities to broadcast content to a broad audience. Interest in ANDRILL from the popular media was high and resulted in the production of several film documentaries involving ANDRILL science, audio programmes, and print articles in newspapers and journals. ANDRILL’s education and outreach materials and programmes are available at http://www.andrill.org/education