Rotary-wing Aerodynamics, Τόμος 1Recent 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. |
Αναζήτηση στο βιβλίο
Αποτελέσματα 1 - 3 από τα 79.
Σελίδα 163
Consequently , for most of the cases encountered in practice , the validity of the
physicomathematical model based on the assumption of constant circulation
must be critically examined before using - for the sake of simplicity - the r ( 7 , y ) ...
Consequently , for most of the cases encountered in practice , the validity of the
physicomathematical model based on the assumption of constant circulation
must be critically examined before using - for the sake of simplicity - the r ( 7 , y ) ...
Σελίδα 179
+ AV , 110 ) asi . where AT . . . Ari , represents incremental jumps in the relative
blade circulation ( with respect to the average ) at blade stations F = 0 . 1 to F = 1 .
0 . Then , x1 , , ž , and Mx are computed for each of the considered blade stations
...
+ AV , 110 ) asi . where AT . . . Ari , represents incremental jumps in the relative
blade circulation ( with respect to the average ) at blade stations F = 0 . 1 to F = 1 .
0 . Then , x1 , , ž , and Mx are computed for each of the considered blade stations
...
Σελίδα 208
Blade Circulation . Circulation around the blade in the free - wake approach is
computed in a manner similar to the cases previously considered . At station r ,
the inplane velocity component perpendicular to the blade axis is U1 = Nr + Vto
sin ...
Blade Circulation . Circulation around the blade in the free - wake approach is
computed in a manner similar to the cases previously considered . At station r ,
the inplane velocity component perpendicular to the blade axis is U1 = Nr + Vto
sin ...
Τι λένε οι χρήστες - Σύνταξη κριτικής
Δεν εντοπίσαμε κριτικές στις συνήθεις τοποθεσίες.
Περιεχόμενα
CHAPTERI Introduction | 1 |
Blade Lagging Motion | 30 |
Momentum Theory | 44 |
Πνευματικά δικαιώματα | |
30 άλλες ενότητες δεν εμφανίζονται
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
acceleration actual aerodynamic aircraft airfoil airfoil sections angle angle-of-attack application approach assumed average axis becomes blade body boundary layer calculations characteristics chord circulation climb coefficient component compressibility computed Consequently considered correction corresponding defined determined developed direction disc discussed distribution doublet downwash drag effects element engine equation example expressed factor field Figure flapping flight flow fluid forces forward flight fuel function fuselage geometry given gross weight helicopter hover hypothetical increase indicated induced velocity influence integration lift limits loading located Mach number maximum means methods noted obtained operating performance pitch plane position potential power required practical predictions presented pressure problem ratio relationship represents respect resulting rotor separation shape shown in Fig speed stall station strength surface tail theory thrust tion values variation various vortex vortices wake wing
Αναφορές για αυτό το βιβλίο
Flight Performance of Fixed and Rotary Wing Aircraft Antonio Filippone Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2006 |