The basic undercarriage drag coefficient is found from:
C Dbasic ,i 
1.5S FrontTirei  0.75S RearTire i
Eqn. (2)
SW
Gear
S Front ft 2 Nose Gear 4.097 Main Gear 8.860 Main Gear 8.860 Segment 1:
S Rear ft 2 4.097 8.860 8.860
Lstrut g
4.3900 5.8900 5.8900
Segment 2:
C L1
N/A
C L1
0.4204
C Dretract
N/A
CDretract
0.0354
Segment 10:
C L1
1.2807
CDretract
0.0354
Segment 16:
C L1
2.0528
CDretract
0.0354
Aileron Sizing: Theory: Steps taken in order to size appropriate aileron for this aircraft are as follows: 1-Type of the aircraft has been determined: This Aircraft could be classified as FAR-23 Type I aircraft (Weight is less than 12000 lb) 2- Critical flight segment should have been determined: Based on trade studies, Due to flap deflection and usual weight consideration Take off segment have been selected. (Phase A) 3- Rolling Time Constant TR should be determined based on type and critical flight phase:
91