XCP20 |
YCP20 |
PSI20 |
PSID20 |
U20 |
V20 |
JTTO(2) |
AANGLE2 |
THETD2 |
|
3 |
Card: Field |
Variable |
|
Description |
Original Units |
Default Units |
Metric Units |
3:1 |
XCP20 |
X’c20 |
The X' coordinate of the center of gravity of vehicle 2, (V2). A fixed Cartesian coordinate system is used, with the positive X' axis shown pointing upward, and the positive Y' axis to the right. Angles are measured clockwise from the positive X' axis. |
Inches |
feet |
meters |
3:2 |
YCP20 |
Y’c20 |
The Y'-coordinate of the center of mass of V2. (see comments on XCP10). |
Inches |
feet |
meters |
3:3 |
PSI20 |
ψ20 |
The heading angle of V2 measured clockwise from the positive X' axis. |
Degrees |
|
|
3:4 |
PSID20 |
|
The angular velocity of V2. Taken to be positive when rotation is clockwise. |
deg/sec |
|
|
3:5 |
U20 |
U20 |
The initial forward velocity of V2. The longitudinal component of the total vector velocity of V2. |
in/sec |
MPH |
m/sec |
3:6 |
V20 |
V20 |
The initial sideways (lateral) velocity of V2 with right taken as positive. |
in/sec |
MPH |
m/sec |
3:7 |
JTTO(2) |
|
Trailer option indicator. Set = 1.0 for trailer on veh#2; = 0 if no trailer. Note: Vehicle #2 can only use the Trailer option if vehicle#1 also has a Trailer. Please note that m-smac input cards 22 & 23 are also required for the Veh 2 trailer option. See additional information on Trailer Option and input requirements for Trailer Option |
|
|
|
3:8 |
AAngle2 |
θ20-ψ20 |
Initial trailer articulation angle with respect to tractor x axis. Note: AAngle2 = THET2-PSI2 |
degrees |
|
|
3:9 |
THETD2 |
|
Initial trailer angular velocity. Taken to be positive when rotation is clockwise. |
deg/sec |
|
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