forked from RobotLocomotion/avl
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathsession1.txt
96 lines (76 loc) · 3.41 KB
/
session1.txt
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
Typical AVL session keyboard inputs.
All commands can be in lowercase.
Blank lines below are for clarity. They are NOT Returns!
Indentation in the command listing below indicates
the menu level to help navigation.
A command in quotes, e.g "L", means that the letter
is typed when the cursor is in the plot window rather
than the text window.
Start AVL with an input-file argument, such as the Plane Vanilla case:
% cd runs
% ../bin/avl vanilla (giving the .avl extension is optional)
OPER enter operating menu
G plot geometry and enter geometry-plot menu
K enter keystroke menu
"L" move viewpoint to left
"L" move viewpoint to left
"L" move viewpoint to left (can be held down for continuous motion)
"R" move viewpoint to right
"D" move viewpoint down
"D" move viewpoint down (can be held down for continuous motion)
"U" move viewpoint up
"I" ingress (increase perspective distortion)
"I" ingress (repeat as necessary)
"I" .
"I" .
"O" outgress (decrease perspective distortion)
"O" .
"<space>" exit keystroke menu
TR show trailing wake vortices
TR hide
<Return> return to OPER menu
A A 1 set angle of attack to 1 degree
X execute calculation
T show Trefftz Plane loading,CL plot, enter T.P.-plot menu
<Return> return to OPER menu
A C 0.6 set alpha to get CL = 0.6
X execute calculation
C1 enter horizontal-flight trim setup menu
G 9.8 set gravitational acceleration
D 1.2 set air density
M 100.0 set mass
B 30.0 set 30 deg bank angle
<Return> return to OPER menu
X execute calculation
T show Trefftz Plane plot
note nonzero moments Cl,Cm,Cn (not trimmed)
<Return> Return to OPER menu
D2 RM 0 drive aileron to get zero rolling moment (trim in roll )
D3 PM 0 drive elevator to get zero pitching moment (trim in pitch)
B YM 0 drive sideslip to get zero yawing moment (trim in yaw )
X execute calculation
T show Trefftz Plane plot -- note zero moments (trimmed)
Note that there is a nonzero sideslip beta,
since rudder is not deflected into the turn.
<Return> Return to OPER menu
D4 YM 0 set rudder to get zero yawing moment
(note error markers on redundant constraints)
B B 0 set zero sideslip in lieu of yaw moment constraint
X execute
T show Trefftz Plane plot
Solution has aileron slightly outside of turn,
some rudder deflection into the turn, and zero sideslip.
This is a coordinated turn. Considerable up-elevator
is also required to trim in the turning airflow.
H Hardcopy current plot (optional)
<Return> Return to OPER menu
G plot geometry and enter geometry-plot menu
LO add surface loading distribution
O enter options submenu
L 0.3 set surface loading scale factor to 0.3 (or whatever's necessary)
<Return> return to geometry-plot menu and replot
<Return> return to OPER menu
ST calculate and display stability derivative matrix
<Return> write to screen rather than to file
<Return> Return to AVL menu
QUIT Quit command is necessary to properly terminate plot.ps file.