Experimental data for pressure coefficient along the bottom wall 
at 0 and 6 degree flap angle from Driver & Seegmiller (1985).

# 0 degree flap angle 
x/S [-],  Cp [-]
0.0,  -0.0607
0.5,  -0.0636
1.0,  -0.0665
2.0,  -0.0742
3.0,  -0.0762
3.5,  -0.0665
4.0,  -0.0424
4.5,   0.0077
5.0,   0.0482
5.5,   0.0782
6.0,   0.1129
6.5,   0.1303
7.0,   0.1389
8.0,   0.1515
9.0,   0.1535
11.0,  0.1477
13.0,  0.1409
15.0,  0.1342
17.0,  0.1303
19.5,  0.1285
21.5,  0.1246
23.5,  0.1227
25.5,  0.1227
27.5,  0.1218
29.5,  0.1218
31.5,  0.1199
33.5,  0.1160
35.5,  0.1189
37.5,  0.1141

# 6 degree flap angle
x/S [-],  Cp [-]
0.0,   0.0361
0.5,   0.0331
1.0,   0.0312
1.5,   0.0292
2.0,   0.0253
3.0,   0.0185
3.5,   0.0253
4.0,   0.0400
4.5,   0.0585
5.0,   0.0829
6.0,   0.1297
7.0,   0.1667
8.0,   0.1989
8.5,   0.2115
9.0,   0.2203
9.5,   0.2310
11.0,  0.2544
12.0,  0.2641
13.0,  0.2749
15.0,  0.2924
17.0,  0.3080
19.5,  0.3265
21.5,  0.3402
23.5,  0.3528
25.5,  0.3674
27.5,  0.3821
29.5,  0.3889
31.5,  0.4035
33.5,  0.4133
35.5,  0.4279
37.5,  0.4347