AERODYNAMI 302

Page 1 of 3

This document was developed for online learning in ASCI 309.

File name: Ex_4_Drag

Updated: 8/13/2014

Exercise 4: Drag and Applications

Part 1: Drag

Givens (Questions 1 – 6):

Weight (W) 15,000 lb CDP 0.021

Wing Area (S) 230 ft2 CLmax at Stall 1.5

Aspect Ratio (AR) 5.3 Note: Assume the drag polar is a parabola

Span Efficiency (e) 0.85

Temperature Standard

Altitude Sea Level

Complete the following table for this particular typical transport jet. Start the table at stall speed, VS. Then answer the questions at the end using the values from the table. You can use an excel spreadsheet to create the answers for the table.

V

(KTAS) q(psf) CL CD CL / CD DP(lb) DI(lb) DT(lb)

VS

120

140

160

180

190

200

220

240

260

Page 2 of 3

This document was developed for online learning in ASCI 309.

File name: Ex_4_Drag

Updated: 8/13/2014

Equations for Table:

q =