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Acoustic measurements from a rotor blade-vortex interaction noise experiment in the German-Dutch wind tunnel (DNW) / / R.M. Martin [and three others]
| Acoustic measurements from a rotor blade-vortex interaction noise experiment in the German-Dutch wind tunnel (DNW) / / R.M. Martin [and three others] |
| Autore | Martin R. M (Ruth McVoy), <1956-> |
| Pubbl/distr/stampa | Washington, DC : , : National Aeronautics and Space Administration, Scientific and Technical Information Division, , 1988 |
| Descrizione fisica | 1 online resource (iii, 178 pages) : illustrations |
| Collana |
NASA technical memorandum
AVSCOM technical report |
| Soggetto topico |
Acoustic measurement
Blade-vortex interaction Helicopters Rotors Wind tunnel models Wind tunnel tests |
| Formato | Materiale a stampa  |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Altri titoli varianti | Acoustic measurements from a rotor blade-vortex interaction noise experiment in the German-Dutch wind tunnel |
| Record Nr. | UNINA-9910704958803321 |
Martin R. M (Ruth McVoy), <1956->
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| Washington, DC : , : National Aeronautics and Space Administration, Scientific and Technical Information Division, , 1988 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
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Aeroacoustic codes for rotor harmonic and BVI noise - CAMRAD.Modl/HIRES: methodology and users' manual / / D. Douglas Boyd, Jr. [and three others]
| Aeroacoustic codes for rotor harmonic and BVI noise - CAMRAD.Modl/HIRES: methodology and users' manual / / D. Douglas Boyd, Jr. [and three others] |
| Autore | Boyd D. Douglas |
| Pubbl/distr/stampa | Hampton, Virginia : , : National Aeronautics and Space Administration, Langley Research Center, , March 1998 |
| Descrizione fisica | 1 online resource (vii, 224 pages) : color illustrations |
| Collana | NASA/TM |
| Soggetto topico |
Aeroacoustics
Applications programs (computers) Blade slap noise Blade-vortex interaction Helicopters Noise prediction Rotor aerodynamics |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Altri titoli varianti | Aeroacoustic codes for rotor harmonic and BVI noise - CAMRAD.Modl/HIRES |
| Record Nr. | UNINA-9910705875203321 |
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Boyd D. Douglas
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| Hampton, Virginia : , : National Aeronautics and Space Administration, Langley Research Center, , March 1998 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
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Aerodynamic characteristics of three helicopter rotor airfoil sections at Reynolds numbers from model scale to full scale at Mach numbers from 0.35 to 0.90 / / Kevin W. Noonan and Gene J. Bingham
| Aerodynamic characteristics of three helicopter rotor airfoil sections at Reynolds numbers from model scale to full scale at Mach numbers from 0.35 to 0.90 / / Kevin W. Noonan and Gene J. Bingham |
| Autore | Noonan Kevin W. |
| Pubbl/distr/stampa | [Washington, D.C.] : , : National Aeronautics and Space Administration, Scientific and Technical Information Branch, , September 1980 |
| Descrizione fisica | 1 online resource (82 pages) : chiefly illustrations |
| Collana |
NASA technical paper
AVRADCOM technical report |
| Soggetto topico |
Aerodynamic characteristics
Airfoils Helicopters Reynolds number Wind tunnel tests Aerofoils - Testing Helicopters - Aerodynamics Rotors (Helicopters) - Testing |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Record Nr. | UNINA-9910707473303321 |
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Noonan Kevin W.
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| [Washington, D.C.] : , : National Aeronautics and Space Administration, Scientific and Technical Information Branch, , September 1980 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
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An aeroelastic analysis of helicopter rotor blades incorporating piezoelectric fiber composite twist actuation / / W. Keats Wilkie, K.C. Park
| An aeroelastic analysis of helicopter rotor blades incorporating piezoelectric fiber composite twist actuation / / W. Keats Wilkie, K.C. Park |
| Autore | Wilkie W. Keats |
| Pubbl/distr/stampa | Hampton, Virginia : , : National Aeronautics and Space Administration, Langley Research Center, , May 1996 |
| Descrizione fisica | 1 online resource (iv, 58 pages) : illustrations |
| Collana | NASA technical memorandum |
| Soggetto topico |
Aeroelasticity
Helicopters Fiber composites Rotary wings Unsteady aerodynamics Differential equations Galerkin method Numerical integration |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Record Nr. | UNINA-9910707239903321 |
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Wilkie W. Keats
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| Hampton, Virginia : , : National Aeronautics and Space Administration, Langley Research Center, , May 1996 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
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Afghan Special Mission Wing : DOD moving forward with $771.8 million purchase of aircraft that Afghans cannot operate or maintain
| Afghan Special Mission Wing : DOD moving forward with $771.8 million purchase of aircraft that Afghans cannot operate or maintain |
| Pubbl/distr/stampa | [Arlington, Va.] : , : Special Inspector General for Afghanistan Reconstruction, , 2013 |
| Descrizione fisica | 1 online resource (ii, 33 pages) : color illustrations |
| Collana | SIGAR audit |
| Soggetto topico |
Defense contracts - United States - Auditing
Airplanes, Military Helicopters Drug traffic - Afghanistan - Prevention - Finance Terrorism - Afghanistan - Prevention - Finance Waste in government spending - United States |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Altri titoli varianti | Afghan Special Mission Wing |
| Record Nr. | UNINA-9910704634803321 |
| [Arlington, Va.] : , : Special Inspector General for Afghanistan Reconstruction, , 2013 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
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Art of the helicopter [[electronic resource] /] / John Watkinson
| Art of the helicopter [[electronic resource] /] / John Watkinson |
| Autore | Watkinson John <1950-> |
| Pubbl/distr/stampa | Oxford ; ; Burlington, MA, : Elsevier Butterworth-Heinemann, 2004 |
| Descrizione fisica | 1 online resource (405 p.) |
| Disciplina | 629.133352 |
| Soggetto topico |
Helicopters
Helicopters - Aerodynamics Helicopters - Control systems Helicopters - Electric equipment |
| Soggetto genere / forma | Electronic books. |
| ISBN |
1-280-96648-3
9786610966486 0-08-047203-6 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto |
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 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 |
| Record Nr. | UNINA-9910457310403321 |
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Watkinson John <1950->
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| Oxford ; ; Burlington, MA, : Elsevier Butterworth-Heinemann, 2004 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
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Art of the helicopter [[electronic resource] /] / John Watkinson
| Art of the helicopter [[electronic resource] /] / John Watkinson |
| Autore | Watkinson John <1950-> |
| Pubbl/distr/stampa | Oxford ; ; Burlington, MA, : Elsevier Butterworth-Heinemann, 2004 |
| Descrizione fisica | 1 online resource (405 p.) |
| Disciplina | 629.133352 |
| Soggetto topico |
Helicopters
Helicopters - Aerodynamics Helicopters - Control systems Helicopters - Electric equipment |
| ISBN |
1-280-96648-3
9786610966486 0-08-047203-6 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto |
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 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 |
| Record Nr. | UNINA-9910784328803321 |
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Watkinson John <1950->
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| Oxford ; ; Burlington, MA, : Elsevier Butterworth-Heinemann, 2004 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
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Art of the helicopter [[electronic resource] /] / John Watkinson
| Art of the helicopter [[electronic resource] /] / John Watkinson |
| Autore | Watkinson John <1950-> |
| Pubbl/distr/stampa | Oxford ; ; Burlington, MA, : Elsevier Butterworth-Heinemann, 2004 |
| Descrizione fisica | 1 online resource (405 p.) |
| Disciplina | 629.133352 |
| Soggetto topico |
Helicopters
Helicopters - Aerodynamics Helicopters - Control systems Helicopters - Electric equipment |
| ISBN |
1-280-96648-3
9786610966486 0-08-047203-6 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto |
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 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 |
| Record Nr. | UNINA-9910811288803321 |
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Watkinson John <1950->
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| Oxford ; ; Burlington, MA, : Elsevier Butterworth-Heinemann, 2004 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
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Art of the helicopter [e-book] / John Watkinson
| Art of the helicopter [e-book] / John Watkinson |
| Autore | Watkinson, John, 1950- |
| Pubbl/distr/stampa | Oxford : Burlington, MA : Elsevier Butterworth-Heinemann, 2004 |
| Descrizione fisica | xii, 390 p. : ill. ; 26 cm. |
| Disciplina | 629.133352 |
| Soggetto topico |
Helicopters
Helicopters - Aerodynamics Helicopters - Control systems Helicopters - Electric equipment |
| Soggetto genere / forma | Electronic books. |
| ISBN |
9780750657150
0750657154 |
| Formato | Risorse elettroniche  |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto | Chapter 1. Introduction to Rotorcraft -- Chapter 2. Technical Background -- Chapter 3. Introduction to Helicopter Dynamics -- Chapter 4. Rotors in Practice -- Chapter 5. The Tail -- Chapter 6. Engines and transmissions -- Chapter 7. Other types of rotorcraft -- Chapter 8. Flight Instruments -- Chapter 9. Control and stability -- Chapter 10. Helicopter Performance -- Chapter 11. Flying Training -- Index. |
| Record Nr. | UNISALENTO-991003237879707536 |
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Watkinson, John, 1950-
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| Oxford : Burlington, MA : Elsevier Butterworth-Heinemann, 2004 | ||
| Risorse elettroniche | ||
| Lo trovi qui: Univ. del Salento | ||
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Characterization and comparison of vibration transfer paths in a helicopter gearbox and a fixture mounted gearbox / / Anwarul Islam [and three others]
| Characterization and comparison of vibration transfer paths in a helicopter gearbox and a fixture mounted gearbox / / Anwarul Islam [and three others] |
| Autore | Isalāma Ānoẏārula |
| Pubbl/distr/stampa | Cleveland, Ohio : , : National Aeronautics and Space Administration, Glenn Research Center, , September 2013 |
| Descrizione fisica | 1 online resource (21 pages) : color illustrations |
| Collana | NASA/TM |
| Soggetto topico |
Systems health monitoring
Transmissions (machine elements) Maintenance Helicopters Torque Rotary wing aircraft Alignment |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Record Nr. | UNINA-9910702656203321 |
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Isalāma Ānoẏārula
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| Cleveland, Ohio : , : National Aeronautics and Space Administration, Glenn Research Center, , September 2013 | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
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