Principles of Helicopter AerodynamicsHelicopters are highly capable and useful rotating-wing aircraft with roles that encompass a variety of civilian and military applications. Their usefulness lies in their unique ability to take off and land vertically, to hover stationary relative to the ground, and to fly forward, backward, or sideways. These unique flying qualities, however, come at a high cost including complex aerodynamic problems, significant vibrations, high levels of noise, and relatively large power requirements compared to fixed-wing aircraft. This book, written by an internationally recognized expert, provides a thorough, modern treatment of the aerodynamic principles of helicopters and other rotating-wing vertical lift aircraft. Every chapter is extensively illustrated and concludes with a bibliography and homework problems. Advanced undergraduate and graduate students, practising engineers, and researchers will welcome this thorough and up-to-date text on rotating-wing aerodynamics. |
Contents
VI | 1 |
VII | 2 |
VIII | 12 |
IX | 14 |
X | 22 |
XI | 27 |
XII | 28 |
XIII | 29 |
CXLIII | 225 |
CXLIV | 226 |
CXLVI | 227 |
CXLVII | 229 |
CXLVIII | 232 |
CL | 233 |
CLI | 234 |
CLII | 235 |
XIV | 30 |
XV | 33 |
XVI | 36 |
XVII | 37 |
XVIII | 38 |
XIX | 39 |
XX | 42 |
XXI | 43 |
XXIII | 44 |
XXIV | 46 |
XXV | 47 |
XXVI | 48 |
XXVII | 50 |
XXVIII | 52 |
XXIX | 53 |
XXXI | 55 |
XXXII | 57 |
XXXIII | 59 |
XXXIV | 60 |
XXXVI | 63 |
XXXVII | 64 |
XXXVIII | 65 |
XXXIX | 66 |
XL | 67 |
XLI | 68 |
XLII | 69 |
XLIII | 73 |
XLV | 76 |
XLVI | 78 |
XLVII | 80 |
XLVIII | 82 |
L | 83 |
LI | 84 |
LIII | 85 |
LIV | 87 |
LV | 91 |
LVI | 92 |
LVII | 93 |
LVIII | 96 |
LIX | 99 |
LX | 100 |
LXI | 102 |
LXII | 105 |
LXIII | 106 |
LXIV | 107 |
LXV | 110 |
LXVII | 111 |
LXIX | 112 |
LXXI | 113 |
LXXIII | 114 |
LXXIV | 115 |
LXXV | 123 |
LXXVI | 124 |
LXXVII | 126 |
LXXVIII | 128 |
LXXIX | 129 |
LXXX | 131 |
LXXXI | 133 |
LXXXII | 134 |
LXXXIII | 139 |
LXXXVI | 140 |
LXXXVII | 141 |
LXXXVIII | 142 |
LXXXIX | 144 |
XC | 147 |
XCI | 149 |
XCII | 150 |
XCIII | 155 |
XCIV | 156 |
XCV | 157 |
XCVI | 159 |
XCVII | 163 |
XCIX | 164 |
CI | 166 |
CIV | 167 |
CV | 168 |
CVI | 169 |
CVIII | 170 |
CIX | 171 |
CX | 173 |
CXI | 174 |
CXIII | 176 |
CXIV | 178 |
CXV | 180 |
CXVI | 182 |
CXVII | 184 |
CXVIII | 185 |
CXIX | 189 |
CXX | 190 |
CXXI | 191 |
CXXII | 193 |
CXXIII | 194 |
CXXIV | 195 |
CXXV | 197 |
CXXVI | 199 |
CXXVII | 201 |
CXXVIII | 203 |
CXXIX | 204 |
CXXX | 208 |
CXXXI | 209 |
CXXXII | 212 |
CXXXIII | 213 |
CXXXIV | 218 |
CXXXV | 219 |
CXXXVII | 220 |
CXXXVIII | 222 |
CXLI | 223 |
CXLII | 224 |
CLIII | 236 |
CLIV | 237 |
CLV | 243 |
CLVI | 244 |
CLVII | 245 |
CLVIII | 246 |
CLIX | 247 |
CLX | 251 |
CLXI | 253 |
CLXII | 256 |
CLXIII | 257 |
CLXIV | 258 |
CLXV | 260 |
CLXVII | 262 |
CLXVIII | 264 |
CLXX | 267 |
CLXXI | 268 |
CLXXII | 269 |
CLXXIII | 272 |
CLXXIV | 274 |
CLXXV | 276 |
CLXXVI | 279 |
CLXXVII | 285 |
CLXXVIII | 288 |
CLXXX | 289 |
CLXXXII | 290 |
CLXXXIII | 291 |
CLXXXIV | 293 |
CLXXXV | 295 |
CLXXXVI | 296 |
CLXXXVII | 298 |
CLXXXVIII | 302 |
CLXXXIX | 303 |
CXCI | 306 |
CXCII | 307 |
CXCIII | 308 |
CXCIV | 309 |
CXCV | 313 |
CXCVI | 315 |
CXCVIII | 318 |
CXCIX | 322 |
CCI | 323 |
CCII | 326 |
CCIII | 328 |
CCIV | 333 |
CCV | 336 |
CCVI | 337 |
CCVII | 340 |
CCVIII | 342 |
CCIX | 345 |
CCX | 346 |
CCXI | 348 |
CCXII | 349 |
CCXIII | 351 |
CCXV | 353 |
CCXVI | 355 |
CCXVII | 357 |
CCXVIII | 358 |
CCXIX | 359 |
CCXX | 361 |
CCXXI | 363 |
CCXXII | 365 |
CCXXIII | 367 |
CCXXIV | 369 |
CCXXV | 371 |
CCXXVI | 372 |
CCXXVII | 374 |
CCXXVIII | 378 |
CCXXIX | 379 |
CCXXX | 382 |
CCXXXI | 383 |
CCXXXII | 389 |
CCXXXIII | 390 |
CCXXXIV | 393 |
CCXXXV | 397 |
CCXXXVI | 399 |
CCXXXVII | 403 |
CCXXXVIII | 405 |
CCXXXIX | 410 |
CCXLI | 412 |
CCXLII | 413 |
414 | |
CCXLIV | 418 |
CCXLV | 419 |
CCXLVII | 421 |
CCXLIX | 425 |
CCL | 426 |
CCLI | 427 |
CCLII | 431 |
CCLV | 432 |
CCLVI | 434 |
CCLVII | 435 |
CCLVIII | 440 |
CCLIX | 442 |
CCLX | 443 |
CCLXI | 445 |
CCLXII | 446 |
CCLXIII | 448 |
CCLXIV | 450 |
CCLXV | 453 |
CCLXVI | 458 |
CCLXVII | 470 |
CCLXVIII | 476 |
CCLXIX | 477 |
CCLXX | 479 |
CCLXXII | 487 |
489 | |
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Common terms and phrases
advance ratios aerodynamic center aircraft airfoil sections airloads American Helicopter Soc angle of attack approximation autogiro autorotation axial blade element blade flapping blade pitch blade tip boundary layer C₁ camber chord coaxial coaxial rotor collective pitch convection Data source density altitude disk loading distribution drag coefficient dynamic stall effects equation experimental figure of merit force forward flight free-stream Free-wake function fuselage helicopter rotor hinge hovering rotor increasing indicial induced power induced velocity interactions leading edge leading-edge Leishman lift coefficient linear Mach number main rotor maximum lift measurements methods momentum theory NACA obtained oscillating pitching moment power required predictions pressure problem radius reduced frequency relatively Reynolds number rotational rotor blade rotor design rotor disk rotor performance rotor power rotor thrust rotor wake shown in Fig Sikorsky solution static subsonic tail rotor tip vortex tip vortices unsteady aerodynamic values vertical gust wake model