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Proceedings of the IEE - Part A: Power Engineering

Issue 1  Part S • Date May 1956

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Displaying Results 1 - 25 of 32
  • Opening address

    Publication Year: 1956
    IEEE is not the copyright holder of this material | PDF file iconPDF (127 KB)
    Freely Available from IEEE
  • Introduction

    Publication Year: 1956, Page(s):2 - 3
    IEEE is not the copyright holder of this material | PDF file iconPDF (343 KB)
    Freely Available from IEEE
  • Electrical equipment in aircraft: survey of past and present practice and future trends in design

    Publication Year: 1956
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1610 KB)

    The paper describes briefly the development of aircraft electrical power-supply systems from the earliest days of flight until the present time. The unusual conditions which the aircraft electrical engineer has to meet in the operation of his equipment are considered, and the future problems which he will have to overcome as a result of improved aircraft performance are discussed. The review shows... View full abstract»

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  • Discussion on "Electrical equipment in aircraft: survey of past and present practice and future trends in design" at the Opening Session

    Publication Year: 1956, Page(s):14 - 17
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  • Factors in the utilization of electrical power in aircraft

    Publication Year: 1956, Page(s):18 - 27
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1382 KB)

    The paper reviews some of the factors which have influenced aircraft electrical installations. It demonstrates the complexity of present-day systems and the stringent safety precautions required. Generally it reflects the problems which constantly confront aircraft electrical engineers in meeting ever increasing demands upon electrical services. View full abstract»

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  • Aircraft radio power supplies: a survey

    Publication Year: 1956, Page(s):28 - 33
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1086 KB)

    The paper outlines the development of aircraft radio power supplies up to the present, and indicates some possible future trends. View full abstract»

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  • The airworthiness and reliability of aircraft electrical systems

    Publication Year: 1956, Page(s):34 - 49
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (2147 KB)

    Standards for the airworthiness and reliability of electrical systems and equipment are discussed in relation to the overall standards for the aircraft and its engines, and the effect of duplication of systems and equipment is considered. The control and protection of generating systems is examined in relation to experience, particularly of total power failure, and it is concluded that systems hav... View full abstract»

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  • Discussion on 'Electricity in aircraft'

    Publication Year: 1956, Page(s):50 - 53
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  • The authors' replies to the discussion on on "Electricity in aircraft"

    Publication Year: 1956, Page(s):53 - 54
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  • The medium-voltage d.c. system in aircraft and its application in the Princess Class flying boats

    Publication Year: 1956, Page(s):55 - 60
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (824 KB)

    The medium-voltage d.c. power system for aircraft is defined and its introduction described. The sources of mechanical power available are suitable for different methods of generating electrical power, but the choice of a d.c. system is supported by desirable motor characteristics, a proved range of contactors and circuit-breakers and suitable light-weight batteries. The ease of maintenance of the... View full abstract»

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  • Rectified-alternating-current generating systems in aircraft

    Publication Year: 1956, Page(s):61 - 71
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1148 KB)

    The paper discusses the relative merits of alternative systems of generation for aircraft, and traces the development in particular of the rectified-a.c. system. The various kinds of supply required on modern aircraft are described, and problems associated with their distribution, as well as those of the generation of large power outputs from main-engine-driven alternators at ever-increasing speed... View full abstract»

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  • A constant-frequency a.c. system for aircraft

    Publication Year: 1956, Page(s):72 - 80
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1306 KB)

    The increasing demands for electrical power in modern aircraft, and in particular 400 c/s constant-frequency supplies for various consuming devices, have emphasized the need for an electrical system which can provide the requisite amount of power for the lightest weight, the minimum maintenance and the maximum reliability. The constant-frequency a.c. system can satisfy these demands and meet the a... View full abstract»

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  • Future trends in aircraft electrical systems

    Publication Year: 1956, Page(s):81 - 97
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (2167 KB)

    An attempt is made to devise the complete electrical system of a hypothetical civil transport aircraft, based upon the generation, utilization and distribution equipment available at the present time, or likely to be available in the immediate future. The approach used is that of an aircraft constructor's design team, and weight is used as the first criterion. Relative reliability is always more d... View full abstract»

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  • Discussion on 'Aircraft electrical systems'

    Publication Year: 1956
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  • The authors' replies to the discussion on "Aircraft electrical systems"

    Publication Year: 1956, Page(s):103 - 105
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  • Trends in the development of airborne electrical equipment, with particular reference to constant-frequency alternating-current systems

    Publication Year: 1956, Page(s):106 - 115
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1646 KB)

    The paper outlines the problems associated with the cooling of electrical equipment under supersonic high-altitude flight conditions. The limitations of present-day equipment are shown and recommendations are made regarding the type of equipment to meet future needs. The merits of the various types of constant-speed drive are discussed, together with the types of alternator which are likely to fin... View full abstract»

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  • Electrical machines for aircraft

    Publication Year: 1956, Page(s):116 - 127
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1901 KB)

    The electrical machines used in aircraft differ greatly from normal industrial machines because they must have the lowest possible weight and bulk, but must be capable of operating over a wide range of ambient temperature and air pressure at varying altitudes. Special materials and methods of construction are therefore used in order to permit a high operating temperature and a high specific loadin... View full abstract»

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  • The cooling of aircraft electrical equipment

    Publication Year: 1956, Page(s):128 - 136
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1128 KB)

    A brief review is given of the methods of cooling electrical equipment and machines at present used in aircraft. Natural cooling, comprising radiation and natural convection, augmented where necessary by the use of fins, is much used, but where a greater amount of cooling is required forced convective air cooling must be employed, the air being circulated either by fan or by the use of blast air o... View full abstract»

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  • Discussion on "Machine equipment"

    Publication Year: 1956, Page(s):137 - 139
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  • The authors' replies to the discussion on "Machine equipment"

    Publication Year: 1956, Page(s):139 - 141
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  • Electrical characteristics and protection of aircraft power systems

    Publication Year: 1956, Page(s):142 - 150
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1408 KB)

    The steady-state and transient characteristics of the utilization and power-source equipment connected to the aircraft busbar can be used to determine the response of the system to shock loading and the nature of its subsequent recovery to normal conditions. The effect of the resulting busbar disturbances on connected load can then be predicted, and limits determined for maximum permissible excurs... View full abstract»

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  • Aircraft switchgear

    Publication Year: 1956, Page(s):151 - 160
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1901 KB)

    An aircraft electrical power system involves the same control, distribution and protection problems as any land-based electrical supply undertaking, and while the design of equipment is eased by the use of lower voltages and powers, it is complicated by the necessity of operating reliably for long periods with little maintenance under widely varying atmospheric conditions, and extremes of vibratio... View full abstract»

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  • Aircraft electrical cables

    Publication Year: 1956, Page(s):161 - 169
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1358 KB)

    An account of early cables is followed by a statement of present-day requirements. Descriptions of the standard cables are given, together with current rating data. Further needs are indicated and possible designs are discussed. View full abstract»

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  • The development of voltage and frequency regulators for aircraft electrical systems

    Publication Year: 1956, Page(s):170 - 179
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1542 KB)

    The paper surveys the development of aircraft voltage and frequency regulators from early days to the present, as aircraft generating equipment progressed from third-brush d.c. machines to constant-frequency alternators. The development of generator driving systems is reviewed, and some early d.c. voltage regulators are described. The carbon-pile regulator is discussed in some detail, and various ... View full abstract»

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  • Aircraft batteries and their behaviour on constant-potential charge

    Publication Year: 1956, Page(s):180 - 191
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1707 KB)

    A brief survey of the present state of progress in aircraft battery development is given, followed by a discussion of constant-potential charging as it applies to aircraft practice. Improved high-rate performance and increasingly unfavourable working conditions have made aircraft batteries over-sensitive to excessive busbar voltages. The variables affecting battery stability are discussed and illu... View full abstract»

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