http://13.232.72.61:8080/jspui/handle/123456789/583 2026-04-03T18:03:15Z 2026-04-03T18:03:15Z Alpatov, A. P. Beletsky, V. V. Dranovskii, V. I Khoroshilov, V. S Pirozhenko, A. V. Troger, H. Zakrzhevskii, A. E http://13.232.72.61:8080/jspui/handle/123456789/595 2018-12-09T04:32:26Z 2010-01-01T00:00:00Z

Title: Dynamics of Tethered Space Systems. Authors: Alpatov, A. P.; Beletsky, V. V.; Dranovskii, V. I; Khoroshilov, V. S; Pirozhenko, A. V.; Troger, H.; Zakrzhevskii, A. E Abstract: The concept of tethered satellite systems (TSS), that is, two or more satellites in orbit around a planet, connected by thin long cables — a length of 100km is not unusual — is one of the most innovative concepts of satellite flight at the end of the 20th century. There exist numerous important practical applications [25], some of which were already tested in several flights in orbit around the Earth organized by NASA during the last decade of the 20th century. Some of these applications and, if applicable, the corresponding flights are shortly described in this report. Description: USE ONLY FOR ACADEMY PURPOSE.

2010-01-01T00:00:00Z Lefebvre, Arthur H. Ballal, Dilip R. http://13.232.72.61:8080/jspui/handle/123456789/594 2018-12-09T04:32:11Z 2010-01-01T00:00:00Z

Title: Gas Turbine Combustion: Alternative Fuels and Emissions Authors: Lefebvre, Arthur H.; Ballal, Dilip R. Abstract: The primary purpose of this introductory chapter is to discuss the main requirements of gas turbine combustors and to describe, in general terms, the various types and configurations of combustors employed in aircraft and industrial engines. The principal geometric and aerodynamic features that are common to most types of gas turbine combustors are briefly reviewed, with special attention being given to fuel preparation and liner-wall cooling to reflect the important role these topics continue to play in combustor development. Reference is made to most of the key issues involved in combustor design and development, but the descriptive material is necessarily brief because these and other important aspects of combustor performance are described more fully in subsequent chapters. Bearing in mind the pressures and exigencies of wartime Britain and Germany, and the lack of knowledge and experience available to the designer, it is perhaps hardly surprising that the first generation of gas turbine combustors were characterized by wide variations in size, geometry, and the mode of fuel injection. With the passage of time and the post-war lifting of information exchange, some commonalities in design philosophy began to emerge. By around 1950, most of the basic features of conventional gas turbine combustors, as we know them today, were firmly established. Description: USE ONLY FOR ACADEMY PURPOSE.

2010-01-01T00:00:00Z Ganguli, Ranjan http://13.232.72.61:8080/jspui/handle/123456789/593 2018-12-09T04:31:43Z 2013-01-01T00:00:00Z

Title: Gas Turbine Diagnostics: Signal Processing and Fault Isolation Authors: Ganguli, Ranjan Abstract: Diagnostics of gas turbine engines is important because of the high cost of engine failure and the possible loss of human life. In this book, we will focus on aircraft or jet engines, which are a special class of gas turbine engines. Typically, physical faults in a gas turbine engine include problems such as erosion, corrosion, fouling, built-up dirt, foreign object damage (FOD), worn seals, burned or bowed blades, etc. These physical faults can occur individually or in combination and cause changes in performance characteristics of the compressors, and in their expansion and compression efficiencies. In addition, the faults cause changes in the turbine and exhaust system nozzle areas. These changes in the performance of the gas turbine components result in changes in the measurement parameters, which are therefore dependent variables. This chapter introduces some basic concepts that are necessary for an understanding of gas turbine diagnostics. First, the importance of signal processing in noise removal from measurements is highlighted. Next, the typical gas turbine diagnostic process is explained. The widely used linear filters and the median filter are then introduced. This is followed by an outline of the least-squares approach and the Kalman filter. Finally, the role of influence coefficients and the basics of vibration-based diagnostics are highlighted. Description: USE ONLY FOR ACADEMY PURPOSE.

2013-01-01T00:00:00Z Levine, William S. http://13.232.72.61:8080/jspui/handle/123456789/592 2018-12-09T04:31:30Z 2011-01-01T00:00:00Z

Title: Control System Fundamentals. Authors: Levine, William S. Abstract: A function containing variables and their derivatives is called a differential expression, and an equation involving differential expressions is called a differential equation. A differential equation is an ordinary differential equation if it contains only one independent variable; it is a partial differential equation if it contains more than one independent variable. We shall deal here only with ordinary differential equations. Description: USE ONLY FOR ACADEMY PURPOSE.

2011-01-01T00:00:00Z