Nutation damper for the AMPTE-IRM satellite: Final Report

The design, computations, and testing of the nutation damper for the AMPTE-IRM satellite are described. The nutation motions of the satellite excite fluid oscillations in the closed tube system; kinetic energy is destroyed (converted to heat) through tube/fluid friction, constriction of the stream by cross sectional change, and formation of turbulence by stream enlargement. This energy is extracted from the satellite such that nutation is reduced. Tests were carried out in a pendulum testing device and the time constants were calculated. Findings showed that the damper remained within the originally specified values and provided for good dynamic behavior of the satellite

AN EXPERIMENTAL STUDY OF TRACE ELEMENT FLUXES FROM SUBDUCTED OCEANIC CRUST

ISSN:0022-3530ISSN:1460-241

Intonation in European and Brazilian Portuguese

This chapter describes the intonation system of Portuguese, concentrating on the analysis of the three main functions of intonation: demarcation, highlighting, and distinction of utterance types. It is based on the description of a single variety: the Lisbon variety for European Portuguese (EP), and the Rio de Janeiro variety for Brazilian Portuguese (BP). The chapter describes the language-particular preferences in intonational grouping that characterize European and Brazilian Portuguese, the size of intonational phrases, the distribution of tonal events within the intonational phrase and the ways in which intonational boundaries are realized. The chapter describes the intonation of two major types of questions: wh-questions and yes-no questions, as types of pragmatically neutral information-seeking questions. It is concerned with the intonation of wh-questions with the question word in sentence initial position. Finally, the chapter presents a typological look at the intonation of Portuguese within the Romance space.info:eu-repo/semantics/publishedVersio