Orbital Case 08A: ISS in Free Rotation with Zero Rates

Orbital scenario 8A tests an idealized International Space Station with it's initial rotation rates [1] set to zero with respect to the inertial.


Constants and Models

This scenario uses an idealized International Space Station vehicle model, specified here. The MET atmosphere model defines atmospheric properties based on time, position, and solar effects specified here. The gravitational model used was an inverse-square gravitation field, specified here. The geodesy model used for this scenario is the WGS-84 rotating model, specified here.


Initial Conditions

Scenario Orbital Case 08A: Zero Initial Attitude Rate
Vehicle ISS
Orbit Type Nearly Circular
Atmospheric Model Off
Time 2007/324:00:00:00 (UTC)
Duration 28,800 s
Gravitation Model Order Inverse Square Gravity Gradient Effects Off
Planetary Ephemeris
Sun/Moon Perturbations		 Off
Off
Initial states
Aerodynamic Characteristics
 Sref (m2)
CL
CD
CY
Cl
Cm
Cn
 1,400
0.0
0.0
0.0
0.0
0.0
0.0
J2000 Position
(m)		 X Position
Y Position
Z Position 		-4,292,653.41
955,168.47
5,139,356.57
J2000 Velocity
(m/s)		 X Velocity
Y Velocity
Z Velocity 		109.649663
-7,527.726490
1,484.521489
Attitude (LVLH)
(deg)
(3-2-1 Sequence)		 Roll
Pitch
Yaw 		0.000000
-11.600000
0.000000
Inertial Rotation Rate (Body Axes)
(deg/s)		 Roll Rate
Pitch Rate
Yaw Rate 		0.000000
0.000000
0.000000

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Errata

Below is the list of erratum that are relevant to changes made on this page that no longer match the report. The full list can be found on the Home Page.

[1] Page 84, Section C.2.16, Paragraph 1, line 3, change "the orientation and rotation rates were set with respect to the inertial" to "the rotation rates were set with respect to the inertial" since orbital initial condition tables still specify body attitude with respect to the LVLH frame despite the scenario description: Volume II Report ↩︎