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Helicopter flight dynamics [[electronic resource] ] : the theory and application of flying qualities and simulation modelling / / Gareth D. Padfield
| Helicopter flight dynamics [[electronic resource] ] : the theory and application of flying qualities and simulation modelling / / Gareth D. Padfield |
| Autore | Padfield G. D |
| Edizione | [2nd ed.] |
| Pubbl/distr/stampa | Oxford, : Blackwell Publishing |
| Descrizione fisica | 1 online resource (680 p.) |
| Disciplina | 629.132/5252 |
| Soggetto topico |
Helicopters - Aerodynamics
Helicopters - Handling characteristics |
| ISBN |
1-281-31889-2
9786611318895 0-470-69184-0 0-470-69116-6 |
| Formato | Materiale a stampa  |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto |
HELICOPTER FLIGHT DYNAMICS; Contents; Preface to first edition; Preface to second edition; Copyright acknowledgements; Notation; List of abbreviations; Chapter 1 Introduction; 1.1 Simulation modelling; 1.2 Flying qualities; 1.3 Missing topics; 1.4 Simple guide to the book; Chapter 2 Helicopter flight dynamics - an introductory tour; 2.1 Introduction; 2.2 Four reference points; 2.2.1 The mission and piloting tasks; 2.2.2 The operational environment; 2.2.3 The vehicle configuration, dynamics and flight envelope; Rotor controls; Two distinct flight regimes; Rotor stall boundaries
2.2.4 The pilot and pilot-vehicle interface2.2.5 Resume of the four reference points; 2.3 Modelling helicopter flight dynamics; The problem domain; Multiple interacting subsystems; Trim, stability and response; The flapping rotor in vacuo; The flapping rotor in air - aerodynamic damping; Flapping derivatives; The fundamental 90deg phase shift; Hub moments and rotor/fuselage coupling; Linearization in general; Stability and control resume; The static stability derivative Mw; Rotor thrust, inflow, Zw and vertical gust response in hover; Gust response in forward flight Vector-differential form of equations of motionValidation; Inverse simulation; Modelling review; 2.4 Flying qualities; Pilot opinion; Quantifying quality objectively; Frequency and amplitude - exposing the natural dimensions; Stability - early surprises compared with aeroplanes; Pilot-in-the-loop control; attacking a manoeuvre; Bandwidth - a parameter for all seasons?; Flying a mission task element; The cliff edge and carefree handling; Agility factor; Pilot's workload; Inceptors and displays; Operational benefits of flying qualities; Flying qualities review; 2.5 Design for flying qualities stability and control augmentationImpurity of primary response; Strong cross-couplings; Response degradation at flight envelope limits; Poor stability; The rotor as a control filter; Artificial stability; 2.6 Chapter review; Chapter 3 Modelling helicopter flight dynamics: building a simulation model; 3.1 Introduction and scope; 3.2 The formulation of helicopter forces and moments in level 1 modelling; 3.2.1 Main rotor; Blade flapping dynamics - introduction; The centre-spring equivalent rotor; Multi-blade coordinates; Rotor forces and moments; Rotor torque; Rotor inflow Momentum theory for axial flightMomentum theory in forward flight; Local-differential momentum theory and dynamic inflow; Rotor flapping-further considerations of the centre-spring approximation; Rotor in-plane motion - lead-lag; Rotor blade pitch; Ground effect on inflow and induced power; 3.2.2 The tail rotor; 3.2.3 Fuselage and empennage; The fuselage aerodynamic forces and moments; The empennage aerodynamic forces and moments; 3.2.4 Powerplant and rotor governor; 3.2.5 Flight control system; Pitch and roll control; Yaw control; Heave control 3.3 Integrated equations of motion of the helicopter |
| Record Nr. | UNINA-9910777062703321 |
Padfield G. D
|
||
| Oxford, : Blackwell Publishing | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. Federico II | ||
| ||
Helicopter flight dynamics [[electronic resource] ] : the theory and application of flying qualities and simulation modelling / / Gareth D. Padfield
| Helicopter flight dynamics [[electronic resource] ] : the theory and application of flying qualities and simulation modelling / / Gareth D. Padfield |
| Autore | Padfield G. D |
| Edizione | [2nd ed.] |
| Pubbl/distr/stampa | Oxford, : Blackwell Publishing |
| Descrizione fisica | 1 online resource (680 p.) |
| Disciplina | 629.132/5252 |
| Soggetto topico |
Helicopters - Aerodynamics
Helicopters - Handling characteristics |
| ISBN |
1-281-31889-2
9786611318895 0-470-69184-0 0-470-69116-6 |
| Formato | Materiale a stampa |
| Livello bibliografico | Monografia |
| Lingua di pubblicazione | eng |
| Nota di contenuto |
HELICOPTER FLIGHT DYNAMICS; Contents; Preface to first edition; Preface to second edition; Copyright acknowledgements; Notation; List of abbreviations; Chapter 1 Introduction; 1.1 Simulation modelling; 1.2 Flying qualities; 1.3 Missing topics; 1.4 Simple guide to the book; Chapter 2 Helicopter flight dynamics - an introductory tour; 2.1 Introduction; 2.2 Four reference points; 2.2.1 The mission and piloting tasks; 2.2.2 The operational environment; 2.2.3 The vehicle configuration, dynamics and flight envelope; Rotor controls; Two distinct flight regimes; Rotor stall boundaries
2.2.4 The pilot and pilot-vehicle interface2.2.5 Resume of the four reference points; 2.3 Modelling helicopter flight dynamics; The problem domain; Multiple interacting subsystems; Trim, stability and response; The flapping rotor in vacuo; The flapping rotor in air - aerodynamic damping; Flapping derivatives; The fundamental 90deg phase shift; Hub moments and rotor/fuselage coupling; Linearization in general; Stability and control resume; The static stability derivative Mw; Rotor thrust, inflow, Zw and vertical gust response in hover; Gust response in forward flight Vector-differential form of equations of motionValidation; Inverse simulation; Modelling review; 2.4 Flying qualities; Pilot opinion; Quantifying quality objectively; Frequency and amplitude - exposing the natural dimensions; Stability - early surprises compared with aeroplanes; Pilot-in-the-loop control; attacking a manoeuvre; Bandwidth - a parameter for all seasons?; Flying a mission task element; The cliff edge and carefree handling; Agility factor; Pilot's workload; Inceptors and displays; Operational benefits of flying qualities; Flying qualities review; 2.5 Design for flying qualities stability and control augmentationImpurity of primary response; Strong cross-couplings; Response degradation at flight envelope limits; Poor stability; The rotor as a control filter; Artificial stability; 2.6 Chapter review; Chapter 3 Modelling helicopter flight dynamics: building a simulation model; 3.1 Introduction and scope; 3.2 The formulation of helicopter forces and moments in level 1 modelling; 3.2.1 Main rotor; Blade flapping dynamics - introduction; The centre-spring equivalent rotor; Multi-blade coordinates; Rotor forces and moments; Rotor torque; Rotor inflow Momentum theory for axial flightMomentum theory in forward flight; Local-differential momentum theory and dynamic inflow; Rotor flapping-further considerations of the centre-spring approximation; Rotor in-plane motion - lead-lag; Rotor blade pitch; Ground effect on inflow and induced power; 3.2.2 The tail rotor; 3.2.3 Fuselage and empennage; The fuselage aerodynamic forces and moments; The empennage aerodynamic forces and moments; 3.2.4 Powerplant and rotor governor; 3.2.5 Flight control system; Pitch and roll control; Yaw control; Heave control 3.3 Integrated equations of motion of the helicopter |
| Record Nr. | UNISA-996208289403316 |
|
Padfield G. D
|
||
| Oxford, : Blackwell Publishing | ||
| Materiale a stampa | ||
| Lo trovi qui: Univ. di Salerno | ||
| ||