BIPOL 1 handout 6A

Empennages
κH =
b
SH ⋅ l H
S W ⋅ mac
SW
SH
1/4mac
lH
1/4macH
mac
1
κV =
1/4mac
SV ⋅ lV
SW ⋅ b
1/4macV
lV
SV
Sailplane
Homebuilt
General aeroplane (single engine)
General aeroplane (twin engine)
Twin turboprop
Jet trainer
Fighter
Transport/bomber
Commercial aeroplane
κV
0.02
0.04
0.04
0.07
0.08
0.06
0.07
0.08
0.09
κH
0.5
0.5
0.7
0.8
0.9
0.7
0.4
1.0
1.0
2
RAF Museum Hendon
Spin
3
30°°÷ 45°°
30°° ÷ 45º
4
Musée de l'Air et de l'Espace Paris
Musée de l'Air et de l'Espace Paris
5
Stall
lH
AoA
V
1/4scaH
1/4sca
HH
6
OK if wing alone is OK
Try to avoid
OK for subsonic
Best
Muzeum Lotnictwa Polskiego Kraków
7
Muzeum Lotnictwa Polskiego Kraków
8
9
Imperial War Museum Duxford
Imperial War Museum Duxford
10
Imperial War Museum Duxford
11
Imperial War Museum Duxford
12
κC =
S C ⋅ lC
SW ⋅ sca
VariEze
B-70
κH
-0,86
-0,104
M
0,27
3,0
13
14
15
AoA on aft
wing
Effect of front wing tip vortex
Aft wing
Plane of
symmetry
Front wing
AoA on aft
wing
Effect of front wing tip vortex
Aft wing
Plane of
symmetry
Front wing
16
17
M>1
M<1
18
19