Investigation of a Compound Helicopter Flying the Depart and Abort Mission Task Element

The next generation of rotorcraft will have to satisfy the appropriate handling qualities requirements before entering service. Many of these vehicles will operate at significantly greater speeds than the conventional helicopter and will therefore have different capabilities than current helicopters. Due to the different capabilities of the compound helicopter, it is possible that new Mission Task Elements (MTEs) need to be developed to assess the handling qualities of this type of helicopter. It is also possible that existing MTEs may be suitable without modification. Overall, it seems necessary to review the US Army’s current handling qualities specification, ADS-33, and determine the suitability of the current MTEs for compound vehicles. The broad aim of the paper is to assess the performance of compound helicopter during manoeuvring flight. More specifically, a simulation study of a compound helicopter flying the Depart and Abort ADS-33 Mission Task Element. There are two objectives: firstly the capabilities of the compound vehicle is compared with those of a conventional helicopter, and secondly, the suitability of the current Depart and Abort MTE, for compound vehicles, is assessed. The results of the research study highlight the capability of compound helicopters in low speed acceleration manoeuvres. These results can be used to redefine low speed acceleration manoeuvres in the new update to the ADS-33 specification. The results also indicate some information about the potential design issues with the compound helicopter

The Trans-Pacific Partnership and regulating capital flows: recommendations for strengthening proposed safeguards in the leaked TPP investment chapter

This repository item contains a policy brief from the Boston University Global Economic Governance Initiative. The Global Economic Governance Initiative (GEGI) is a research program of the Center for Finance, Law & Policy, the Frederick S. Pardee Center for the Study of the Longer-Range Future, and the Frederick S. Pardee School of Global Studies. It was founded in 2008 to advance policy-relevant knowledge about governance for financial stability, human development, and the environment.The leaked text of the Trans-Pacific Partnership (TPP) Agreement’s investment chapter reveals that negotiators are giving serious consideration to a safeguard intended to allow nations to regulate capital flows. It is critical that the safeguard be drafted in such a way that governments have sufficient policy flexibility to prevent and mitigate financial instability

FOMC learning and productivity growth (1985-2003): a reading of the record

The increasingly rapid productivity growth that began in the 1990s was the defining economic event of the decade and a major topic of debate among Federal Reserve policymakers. A key aspect of the debate was the contrast between information contained in aggregate data, which initially suggested little productivity gain, and anecdotal firm-level evidence, which hinted at the productivity acceleration. The authors revisit this debate from the actual FOMC transcripts. Their study illustrates the process by which policymakers filter incoming data to identify changes in underlying fundamental trends.Monetary policy

The 1990s acceleration in labor productivity: causes and measurement

The acceleration of labor productivity growth that began during the mid-1990s is the defining economic event of the past decade. A consensus has arisen among economists that the acceleration was caused by technological innovations that decreased the quality-adjusted prices of semiconductors and related information and communications technology (ICT) products, including digital computers. In sharp contrast to the previous 20 years, services-producing sectors-heavy users of ICT products-led the productivity increase, besting even a robust manufacturing sector. In this article, the authors survey the performance of the services-producing and goods-producing sectors and examine revisions to aggregate labor productivity data of the type commonly discussed by policymakers. The revisions, at times, were large enough to reverse preliminary conclusions regarding productivity growth slowdowns and accelerations. The unanticipated acceleration in the services sector and the large size of revisions to aggregate data combine to shed light on why economists were slow to recognize the productivity acceleration.Labor productivity

How does the FOMC learn about economic revolutions? evidence from the New Economy Era, 1994-2001

Forecasting is a daunting challenge for business economists and policymakers, often made more difficult by pervasive uncertainty. No such uncertainty is more difficult than projecting the reaction of policymakers to major shifts in the economy. We explore the process by which the FOMC came to recognize, and react to, the productivity acceleration of the 1990s. Initial impressions were formed importantly by anecdotal evidence. Then, policymakers—and chiefly Alan Greenspan—came to mistrust the data and the forecasts. Eventually, revisions to published data confirmed initial impressions. Our main conclusion is that the productivity-driven positive supply side shocks of the 1990s were initially viewed favorably. However, over time they came to be viewed as posing a threat to the economy, chiefly through unsustainable increases in aggregate demand growth that threatened to increase inflation pressures. Perhaps nothing so complicates business planning and forecasting as policymakers who initially embrace an unanticipated shift and, later, come to abhor the same shift.Federal Open Market Committee ; Financial crises ; Productivity

Productivity measurement and monetary policymaking during the 1990s

The acceleration of productivity growth during the latter half of the 1990s was both the defining economic event of the decade and a major topic of debate among Federal Reserve policymakers. A key aspect of the debate was the conflict between incoming aggregate data, which initially suggested little productivity gain, and anecdotal firm-level evidence which hinted at an acceleration. Some FOMC members feared an overheating economy and higher inflation; others, including the Chairman, argued that revolutionary increases in productivity were occurring and the Committee should not prematurely forgo significant future gains in real income by tightening policy. We review the difficulty of measuring productivity during periods of rapid quality change, the large magnitude of subsequent data revisions during the 1990s, and, from FOMC transcripts, the contemporary monetary policy debate within the FOMC as the decade*s data evolved.Monetary policy ; Production (Economic theory)

Determinants of U.S. Policy toward China 1925-1937

The analysis of American foreign policy has long been a favorite subject for historians, and the U.S. policy toward China during the 1920s and 1930s has received its fair share of attention. Most authors dealing with this period have been content to trace carefully the course taken by U.S. policy makers during this period, pointing out where they went wrong, or defending the policy as being the best possible given the situation. Some authors have presented biographical sketches of various major policymakers, analyzing the role played by their policy maker. Nearly all include reasons a particular policy was followed or why a particular policymaker acted as he did. What were the major determinants of U.S. policy during the late 1920s and early 1930s? This paper will present a summary of U.S. policy toward China from 1925 to 1937 to provide a background, followed by a description of the individuals in the State Department and the White House who had primary responsibility for the formulation of the China policy during this period and the role played by each. Next, the major factors that influenced the formation of policy will be discussed as well as the relative importance of each factor as measured by the actual policy followed. Finally, conclusions will be drawn as to the major determinants of U.S. policy toward China during this period