| About the Authors |
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xi | |
| Preface to First Edition |
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xiii | |
| Preface to Second Edition |
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xv | |
| Preface to Third Edition |
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xvii | |
| Notation |
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xxi | |
| Units |
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xxv | |
| Abbreviations |
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xxvii | |
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1 | (22) |
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1 | (21) |
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1 | (2) |
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1.1.2 First World War Era |
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3 | (1) |
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3 | (3) |
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1.1.4 Second World War Era |
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6 | |
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1 | (12) |
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1.1.6 The Helicopter from an Engineering Viewpoint |
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13 | (9) |
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22 | (1) |
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22 | (1) |
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2 Rotor in Vertical Flight: Momentum Theory and Wake Analysis |
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23 | (40) |
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2.1 Momentum Theory for Hover |
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23 | (2) |
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2.2 Non-dimensionalization |
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25 | (1) |
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26 | (3) |
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29 | (1) |
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2.5 Momentum Theory for Vertical Climb |
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29 | (5) |
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2.6 Modelling the Streamtube |
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34 | (3) |
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37 | (8) |
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2.8 Wind Tunnel Test Results |
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45 | (4) |
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2.9 Complete Induced-Velocity Curve |
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49 | (3) |
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49 | (2) |
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51 | (1) |
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52 | (1) |
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2.10 Summary Remarks on Momentum Theory |
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52 | (1) |
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2.11 Complexity of Real Wake |
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53 | (2) |
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2.12 Wake Analysis Methods |
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55 | (3) |
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58 | (2) |
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60 | (1) |
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61 | (2) |
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3 Rotor in Vertical Flight: Blade Element Theory |
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63 | (16) |
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63 | (5) |
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3.2 Thrust Approximations |
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68 | (2) |
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70 | (1) |
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71 | (1) |
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71 | (2) |
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3.5 Blade Mean Lift Coefficient |
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73 | (1) |
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74 | (2) |
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76 | (2) |
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3.8 Example of Hover Characteristics |
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78 | (1) |
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78 | (1) |
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4 Rotor Mechanisms for Forward Flight |
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79 | (32) |
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79 | (6) |
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85 | (3) |
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88 | (6) |
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4.4 Equivalence of Flapping and Feathering |
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94 | (15) |
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95 | (1) |
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95 | (1) |
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4.4.3 Coriolis Acceleration |
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95 | (3) |
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98 | (1) |
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99 | (1) |
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99 | (10) |
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109 | (2) |
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5 Rotor Aerodynamics in Forward Flight |
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111 | (28) |
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111 | (4) |
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5.2 Descending Forward Flight |
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115 | (5) |
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120 | (5) |
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5.3.1 Geometry of the Rotor Flow |
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120 | (5) |
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125 | (13) |
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125 | (3) |
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128 | (2) |
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130 | (1) |
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131 | (2) |
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5.4.5 Flapping Coefficients |
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133 | (3) |
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5.4.6 Typical Numerical Values |
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136 | (2) |
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138 | (1) |
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139 | (40) |
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139 | (1) |
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139 | (5) |
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144 | (4) |
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144 | (1) |
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144 | (2) |
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146 | (2) |
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148 | (17) |
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151 | (4) |
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6.4.2 Precession -- Yaw Agility |
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155 | (5) |
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6.4.3 Calculation of Downwash |
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160 | (2) |
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162 | (2) |
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6.4.5 Example -- Sea King |
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164 | (1) |
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165 | (3) |
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6.6 Rear Fuselage Upsweep |
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168 | (4) |
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6.7 Higher Harmonic Control |
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172 | (1) |
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6.8 Aerodynamic Design Process |
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173 | (4) |
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177 | (2) |
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179 | (22) |
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179 | (1) |
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7.2 Hover and Vertical Flight |
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180 | (3) |
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183 | (1) |
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7.4 Climb in Forward Flight |
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184 | (3) |
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186 | (1) |
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187 | (1) |
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7.6 Rotor Limits Envelope |
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187 | (1) |
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7.7 Accurate Performance Prediction |
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188 | (1) |
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189 | (2) |
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7.9 Speculation on the Really Low-Drag Helicopter |
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191 | (2) |
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7.10 An Exercise in High-Altitude Operation |
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193 | (2) |
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195 | (5) |
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200 | (1) |
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8 Trim, Stability and Control |
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201 | (14) |
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201 | (3) |
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8.2 Treatment of Stability and Control |
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204 | (1) |
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205 | (3) |
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8.3.1 Incidence Disturbance |
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206 | (1) |
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8.3.2 Forward Speed Disturbance |
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207 | (1) |
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8.3.3 Angular Velocity (Pitch or Roll Rate) Disturbance |
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207 | (1) |
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8.3.4 Sideslip Disturbance |
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207 | (1) |
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207 | (1) |
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207 | (1) |
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208 | (1) |
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208 | (1) |
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8.4.2 Special Case of Hover |
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208 | (1) |
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209 | (1) |
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209 | (2) |
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211 | (2) |
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213 | (2) |
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9 A Personal Look at the Future |
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215 | (8) |
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222 | (1) |
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Appendix: Performance and Mission Calculation |
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223 | (26) |
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223 | (1) |
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224 | (1) |
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224 | (5) |
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225 | (2) |
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227 | (1) |
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228 | (1) |
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A.3.4 Example of Parameter Values |
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228 | (1) |
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A.4 Calculation of Engine Fuel Consumption |
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229 | (1) |
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230 | (1) |
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A.5.1 Maximum Continuous Power Rating |
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231 | (1) |
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A.5.2 Take-Off or 1 Hour Power Rating |
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231 | (1) |
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A.5.3 Maximum Contingency or 2 1/2 Minute Power Rating |
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231 | (1) |
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A.5.4 Emergency or 1 1/2 Minute Power Rating |
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231 | (1) |
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A.6 Calculation of the Performance of a Helicopter |
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231 | (6) |
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236 | (1) |
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237 | (3) |
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238 | (1) |
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A.7.2 Atmospheric Parameters |
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238 | (1) |
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A.7.3 Downwash Calculation |
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239 | (1) |
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240 | (2) |
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242 | (1) |
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242 | (2) |
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A.11 Examples of Mission Calculations |
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244 | (1) |
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A.12 Westland Lynx -- Search and Rescue |
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245 | (4) |
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A.12.1 Description of the Mission |
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245 | (1) |
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246 | (3) |
| Index |
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249 | |