Young Engineers Satellite 2 Samara Summer Space School 2004

1
Young Engineers Satellite 2Samara Summer Space
School 2004

• Mission Safety Analysis And Deployment Control
• (theoretical substantiations)

SAMARA STATE AEROSPASE UNIVERSITY, RUSSIA
2
Mathematical Model

• Assumptions
• No any disturbances of FOTON-YES2 orbit
• The tether is always tense
• FOTON and YES2 capsule are mass points

X
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Y
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r
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f
Z
f
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3
Mathematical Model
4
Simulations
Deployment trajectory
Deployment speed vs. time
5
Control system
F(u)
6
Simulation with barberpole brake
Tension vs. time
Turns vs. time
with barberpole brake
without barberpole brake
7
Simulation with barberpole brake
Tension (zoomed) vs. time
Turns (zoomed) vs. time
with barberpole brake
without barberpole brake
8
Jerk Simulation
Jerk after 40th second of deployment
Deployment trajectory
Velocity vs. time
Tension vs. time
9
Jerk Simulation
Jerk after 8th second of deployment
Deployment trajectory
Velocity vs. time
Tension vs. time
10
Jerk Simulation
Jerk after 2nd second of deployment
Deployment trajectory
Velocity vs. time
Tension vs. time