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1. |
Record Nr. |
UNINA990004359280403321 |
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Autore |
Borges, Jorge Luis <1899-1986> |
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Titolo |
Ficciones El aleph El informe de brodie / Jorge Luis Borges ; prologo Iraset Paez Urdaneta ; cronologia y bibliografia Horacio Jorge Becco |
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Pubbl/distr/stampa |
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Caracas : Biblioteca Ayacucho, 1986 |
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ISBN |
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Descrizione fisica |
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Collana |
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Biblioteca Ayacucho ; 1189 |
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Disciplina |
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Locazione |
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Collocazione |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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2. |
Record Nr. |
UNINA9910156208103321 |
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Autore |
Tate Nikki |
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Titolo |
Birthdays : beyond cake and ice cream / / Nikki Tate & Dani Tate-Stratton |
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Pubbl/distr/stampa |
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[Victoria, British Columbia] : , : Orca Book Publishers, , 2017 |
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©2017 |
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ISBN |
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Descrizione fisica |
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1 online resource (82 pages) : color illustrations, photographs |
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Collana |
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Disciplina |
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Soggetti |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Nota di bibliografia |
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Includes bibliographical references and index. |
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Nota di contenuto |
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The birth of birthdays -- Celebrating birthdays around the world -- Milestone birthdays. |
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Sommario/riassunto |
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"How do you celebrate the day you joined the world? Find out whose party includes a horse race, which culture does a coming-of-age fire-ant ritual, and other wonderful ways birthdays are celebrated around the world"-- |
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3. |
Record Nr. |
UNINA9910784328803321 |
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Autore |
Watkinson John <1950-> |
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Titolo |
Art of the helicopter [[electronic resource] /] / John Watkinson |
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Pubbl/distr/stampa |
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Oxford ; ; Burlington, MA, : Elsevier Butterworth-Heinemann, 2004 |
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ISBN |
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1-280-96648-3 |
9786610966486 |
0-08-047203-6 |
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Descrizione fisica |
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1 online resource (405 p.) |
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Disciplina |
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Soggetti |
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Helicopters |
Helicopters - Aerodynamics |
Helicopters - Control systems |
Helicopters - Electric equipment |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Nota di contenuto |
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front cover; copyright; table of contents; front matter; Preface; Acknowledgements; body; 1 Introduction to rotorcraft; 1.1 Applications of the helicopter; 1.2 A short technical helicopter history; 1.3 Types of rotorcraft; 1.4 Rotor configurations; 1.5 The essential elements; 1.6 The airframe; 1.7 Engine and transmission; 1.8 The fuel system; 1.9 The landing gear; 1.10 Oleos and ground resonance; 1.11 The rotors; 1.12 The control system; 1.13 Electrical and hydraulic system; 1.14 Instruments and avionics; 2 Technical background; 2.1 Introduction to mechanics; 2.2 Mass and density |
2.3 Force and acceleration2.4 Strength and rigidity; 2.5 Resultants and components offorces; 2.6 Moments and couples; 2.7 Work,energy,power and momentum; 2.8 Efficiency; 2.9 Gases and the atmosphere; 2.10 Sound; 2.11 The mechanics ofoscillation; 2.12 The mechanics ofrotation; 2.13 Sidebands; 2.14 Fourier analysis; 2.15 Centrifugal and Coriolis forces; 2.16 Rotating masses and precession; 2.17 The gyroscope; 2.18 Piezo-electric and laser gyroscopes; 2.19 Feedback; 3 Introduction to helicopter dynamics; 3.1 Creating and controlling lift; 3.2 The centre of pressure; 3.3 The coefficient of lift |
3.4 Collective control3.5 In the hover; 3.6 Forces on the blades; 3.7 |
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Rotor coning; 3.8 Torque and thrust in rotors; 3.9 The rotor as an actuator; 3.10 Blade element theory; 3.11 Disc loading; 3.12 Figure of merit; 3.13 Blade twist and taper; 3.14 Swirl; 3.15 Vertical autorotation; 3.16 Tip loss and the vortex ring; 3.17Ground effect; 3.18 Cyclic control; 3.19 Basic manoeuvres; 3.20 In translational flight; 3.21 Inflow and coning roll; 3.22 Rotor H-force; 3.23 Blade stall and compressibility; 3.24 The speed limit; 3.25 Harmonic blade motion; 3.26 Sources of vibration; 3.27 Vibration control |
3.28 Harmonic pitch control3.29 Blade design; 4 Rotors in practice; 4.1 Introduction; 4.2 Why articulated rotors are used; 4.3 Axes galore; 4.4 Flapping; 4.5 Droop stops; 4.6Introduction to dragging; 4.7 Order of hinges; 4.8 Types of rotor head; 4.9 Zero-offset heads; 4.10 Dangers of zero-offset heads -negative g; 4.11 Rotor response; 4.12 Feathering; 4.13 Pitch control; 4.14 Cyclic trim; 4.15 Tilting heads; 4.16 Dragging dynamics; 4.17 Ground resonance; 4.18 Air resonance; 4.19 Dynamic rollover; 4.20 Some rotor head examples; 4.21 Blade construction; 4.22 Blade tracking; 4.23 Blade folding |
5 The tail5.1 Introduction; 5.2 Balancing the torque; 5.3 The conventional tail rotor; 5.4 Tail rotor location; 5.5 Tail rotor performance; 5.6 The tail plane; 5.7 The stabilator; 5.8 Fins; 5.9 The tail boom; 5.10 The fenestron; 5.11 NOTAR; 5.12 Tail rotor failure; 6 Engines and transmissions; 6.1 Introduction; 6.2 Choice of engine; 6.3 A piston-engine installation; 6.4 A turbine installation; 6.5 Correlators and governors; 6.6 The gasoline engine; 6.7 The ignition system; 6.8 The starter; 6.9 The oil system; 6.10 The carburettor; 6.11 Fuel injection; 6.12 The turbocharger |
6.13 Gasoline engine instruments |
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Sommario/riassunto |
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The modern helicopter is a sophisticated device which merges a surprising number of technologies together. This wide range of disciplines is one of the fascinations of the helicopter, but it is also makes a complete understanding difficult.Those searching for an understanding of the helicopter will find The Art of the Helicopter invaluable. John Watkinson approaches every subject associated with the helicopter from first principles and builds up in a clearly explained logical sequence using plain English and clear diagrams, avoiding unnecessary mathematics.Technical terms and |
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