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English for Aircraft will help you use aeronautical manuals more easily. It is designed for civi- lian or military technicians, engineers and mechanics and can be used with a qualified tea- cher in a training course or tor self-study. It is for users of English with an intermediate level in written English.
Continuance of the use of the internal combustion engine for automobiles is partly due to the improvement of engine control systems (onboard computers providing engine management processes, and electronically controlled fuel injection). Forced air induction by turbocharging and supercharging have increased power outputs and engine efficiencies. Similar changes have been applied to smaller diesel engines giving them almost the same power characteristics as petrol engines. This is especially evident with the popularity of smaller diesel engine propelled cars in Europe.
The nature of this bias is illustrated in Table 26 which
summarizes the reasons for the rejection of 1,713 personal
loan applicants by a metropolitan bank. The first two rea-
sons—too much borrowing and weak statement—account for
about 50 percent of the total number of rejections and suggest
that the vocational and financial characteristics of these
prospective borrowers were unsatisfactory. Rejections of
this nature might well be expected to bias the sample.
Batteries are an essential component of virtually all aircraft electrical systems. Aircraft batteries are used to start engines and auxiliary power units (APUs), provide emergency backup power for essential avionics equipment and lighting systems, assure no-break power for navigation units and ﬂy-by-wire computers, and to provide ground power capability for maintenance and preﬂight checkouts. Many of these functions are critical to the safe operation of the aircraft, so the reliability of an aircraft battery is of utmost importance.
CHAPTER 57 GAS TURBINES
GE Power Systems Schenectady, New York
INTRODUCTION 57.1.1 Basic Operating Principles 57. 1.2 A Brief History of Gas Turbine Development and Use 57.1.3 Components, Characteristics and Capabilities 57.1.4 Controls and Accessories 57.1.5 Gas Turbine Operation GAS TURBINE PERFORMANCE 57.2.1 Gas Turbine Configurations and Cycle Characteristics 57.2.2 Trends in Gas Turbine Design and Performance
1728 1737 1740 57.4 1740 1740 1747
APPLICATIONS 1749 57.3.1 Use of Exhaust Heat in Industrial Gas Turbines 1749 57.3.
Remote sensing is the science of measuring characteristics of interest from a distance. Our focus in this chapter is the remote sensing of Earth from instruments ﬂown on aircraft or spacecraft. Imaging from remote sensors has had a long history, starting early in the twentieth century with photographs from balloons and aircraft. In recent years, there has been a proliferation of aerial and space-borne sensors that image the Earth at various resolutions.