Rotary-wing Aerodynamics, Τόμος 1Dover Publications, 1984 - 601 σελίδες Recent literature related to rotary-wing aerodynamics has increased geometrically; yet, the field has long been without the benefit of a solid, practical basic text. To fill that void in technical data, NASA (National Aeronautics and Space Administration) commissioned the highly respected practicing engineers and authors W. Z. Stepniewski and C. N. Keys to write one. The result: Rotary-Wing Aerodynamics, a clear, concise introduction, highly recommended by U.S. Army experts, that provides students of helicopter and aeronautical engineering with an understanding of the aerodynamic phenomena of the rotor. In addition, it furnishes the tools for quantitative evaluation of both rotor performance and the helicopter as a whole. Now both volumes of the original have been reprinted together in this inexpensive Dover edition. In Volume I: "Basic Theories of Rotor Aerodynamics," the concept of rotary-wing aircraft in general is defined, followed by comparison of the energy effectiveness of helicopters with that of other static-thrust generators in hover, as well as with various air and ground vehicles in forward translation. Volume II: "Performance Prediction of Helicopters" offers practical application of the rotary-wing aerodynamic theories discussed in Volume I, and contains complete and detailed performance calculations for conventional single-rotor, winged, and tandem-rotor helicopters. Graduate students with some background in general aerodynamics, or those engaged in other fields of aeronautical or nonaeronautical engineering, will find this an essential and thoroughly practical reference text on basic rotor dynamics. While the material deals primarily with the conventional helicopter and its typical regimes of flight, Rotary-Wing Aerodynamics also provides a comprehensive insight into other fields of rotary-wing aircraft analysis as well. |
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Σελίδα 7
... PROBLEMS OF THE ROTOR Asymmetry of Flow Most of the dynamic and many of the aerodynamic problems of rotary - wing aircraft stem from the fact that an inplane velocity component ( VII ) appears in all non- axial translatory motions of a ...
... PROBLEMS OF THE ROTOR Asymmetry of Flow Most of the dynamic and many of the aerodynamic problems of rotary - wing aircraft stem from the fact that an inplane velocity component ( VII ) appears in all non- axial translatory motions of a ...
Σελίδα 276
... problems were already in existence . In the U.S. , the works of Hess and his group were being par- alleled by Ruppert and his coworkers . All of these efforts resulted in two programs which , continuously modified and improved even as ...
... problems were already in existence . In the U.S. , the works of Hess and his group were being par- alleled by Ruppert and his coworkers . All of these efforts resulted in two programs which , continuously modified and improved even as ...
Σελίδα 243
... Problems . 1980 edition . 582pp . 6 % x 9 . 66021-4 HYDRODYNAMIC AND HYDROMAGNETIC STABILITY , S. Chandrasekhar . Lucid examination of the Rayleigh - Benard problem ; clear coverage of the theory of instabilities causing convection ...
... Problems . 1980 edition . 582pp . 6 % x 9 . 66021-4 HYDRODYNAMIC AND HYDROMAGNETIC STABILITY , S. Chandrasekhar . Lucid examination of the Rayleigh - Benard problem ; clear coverage of the theory of instabilities causing convection ...
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actuator disc aerodynamic airfoil airfoil section airspeed altitude angle-of-attack assumed autorotation axis azimuth blade element blade element theory blade station boundary layer calculations chord circulation computed descent determined disc loading downwash velocity drag coefficient effects equation expressed factor Figure flow forward flight fuel fuselage gross weight Helicopter Rotor horizontal flight hover hypothetical helicopter increase induced power induced velocity interference drag lift coefficient lifting surface Mach number main rotor maximum momentum theory nondimensional number of blades obtained parasite drag percent performance pitch angle power required predictions pressure profile drag profile power radius rate of climb ratio resulting Reynolds number rotor disc rotor power rotor thrust shown in Fig single-rotor SL/STD slipstream stall tail rotor tandem tandem-rotor tion tip losses TRUE AIRSPEED values variation vector velocity component velocity potential vortex theory vortices wake wind-tunnel wing
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Flight Performance of Fixed and Rotary Wing Aircraft Antonio Filippone Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2006 |