Appendix No. 1

Table of Dollar-Cost Per Pound of Drag at Speeds from 100 to 300 mph.

This table shows the cost for one pound of aerodynamic drag at flying speeds from 100 mph to 300 mph. Propeller efficiency factor "n" = 0.80. Fuel cost = $US2.00 per US gallon. The purpose of the table is strictly for cost comparison. Although we know that fast airplanes have higher "n" factors, as the table is meant only to show the increasing cost of drag with higher speeds, the "n" factor is kept at 0.80.

 
V HPr Cost V HPr Cost V HPr Cost V HPr Cost
    cents     cents     cents     cents

100

0.333

5.55

                 

101

0.343

5.72

131

0.749

12.49

161

1.391

23.18

191

2.323

38.71

102

0.354

5.90

132

0.767

12.78

162

1.417

23.62

192

2.359

39.32

103

0.364

6.07

133

0.784

13.07

163

1.444

24.06

193

2.396

39.94

104

0.375

6.25

134

0.802

13.37

164

1.470

24.51

194

2.434

40.56

105

0.386

6.43

135

0.820

13.67

165

1.497

24.96

195

2.472

41.19

106

0.397

6.62

136

0.839

13.97

166

1.525

25.41

196

2.510

41.83

107

0.408

6.81

137

0.857

14.29

167

1.552

25.87

197

2.549

42.47

108

0.420

7.00

138

0.876

14.66

168

1.581

26.34

198

2.588

43.12

109

0.432

7.20

139

0.895

14.92

169

1.609

26.82

199

2.627

43.78

110

0.444

7.39

140

0.915

15.24

170

1.638

27.29

200

2.667

44.44

111

0.456

7.60

141

0.934

15.57

171

1.667

27.78

201

2.707

45.11

112

0.468

7.81

142

0.954

15.91

172

1.696

28.27

202

2.748

45.79

113

0.481

8.02

143

0.975

16.25

173

1.726

28.77

203

2.789

46.48

114

0.494

8.23

144

0.995

16.59

174

1.756

29.27

204

2.830

47.16

115

0.507

8.45

145

1.016

16.94

175

1.786

29.77

205

2.872

47.86

116

0.520

8.67

146

1.037

17.29

176

1.817

30.29

206

2.914

48.57

117

0.534

8.90

147

1.059

17.65

177

1.848

30.81

207

2.957

49.28

118

0.548

9.13

148

1.081

18.01

178

1.880

31.33

208

3.000

50.00

119

0.562

9.36

149

1.103

18.38

179

1.912

31.86

209

3.043

50.72

120

0.576

9.60

150

1.125

18.75

180

1.944

32.40

210

3.087

51.45

121

0.591

9.84

151

1.148

19.13

181

1.977

32.94

211

3.131

52.19

122

0.605

10.09

152

1.171

19.51

182

2.010

33.49

212

3.176

52.93

123

0.620

10.34

153

1.194

19.80

183

2.043

34.05

213

3.221

53.69

124

0.636

10.59

154

1.217

20.29

184

2.077

34.61

214

3.267

54.45

125

0.651

10.85

155

1.241

20.69

185

2.111

35.18

215

3.313

55.21

126

0.667

11.11

156

1.265

21.09

186

2.145

35.75

216

3.359

55.99

127

0.683

11.38

157

1.290

21.50

187

2.180

36.33

217

3.406

56.77

128

0.699

11.65

158

1.325

21.91

188

2.215

36.92

218

3.453

57.56

129

0.716

11.93

159

1.340

22.33

189

2.250

37.51

219

3.501

58.35

130

0.732

12.21

160

1.365

22.76

190

2.286

38.11

220

3.549

59.16

 

V HPr Cost V HPr Cost V HPr Cost V HPr Cost
    cents     cts.     cts.     cts.

221

3.598

59.97

241

4.666

77.76

261

5.927

98.78

281

7.396

123.27

222

3.647

60.78

242

4.724

78.74

262

5.995

99.92

282

7.475

124.59

223

3.697

61.61

243

4.783

79.72

263

6.064

101.10

283

7.555

125.92

224

3.747

62.44

244

4.842

80.70

264

6.133

102.20

284

7.635

127.26

225

3.797

63.28

245

4.902

81.70

265

6.203

103.40

285

7.716

128.61

226

3.848

64.13

246

4.962

82.71

266

6.274

104.60

286

7.798

129.96

227

3.899

64.98

247

5.023

83.72

267

6.345

105.80

287

7.880

131.33

228

3.951

65.85

248

5.084

84.74

268

6.416

106.90

288

7.963

132.71

229

4.003

66.72

249

5.146

85.57

269

6.488

108.14

289

8.048

134.10

230

4.056

67.59

250

5.208

86.81

270

6.561

109.35

290

8.130

135.49

231

4.109

68.48

251

5.271

87.05

271

6.634

110.57

291

8.214

136.90

232

4.162

69.37

252

5.334

88.91

272

6.708

111.80

292

8.299

138.32

233

4.216

70.27

253

5.398

89.97

273

6.782

113.40

293

8.385

139.74

234

4.271

71.18

254

5.462

91.04

274

6.857

114.28

294

8.471

141.18

235

4.326

72.10

255

5.527

92.12

275

6.932

115.54

295

8.558

142.62

236

4.381

73.02

256

5.592

93.21

276

7.008

116.80

296

8.645

144.08

237

4.437

73.96

257

5.658

94.30

277

7.085

118.80

297

8.733

145.54

238

4.494

74.90

258

5.725

95.41

278

7.162

119.36

298

8.821

147.02

239

4.551

75.84

259

5.791

96.52

279

7.239

120.65

299

8.910

148.50

240

4.608

76.80

260

5.859

97.64

280

7.317

122.96

300

9.000

150.00