Space Sling for Earth/Moon transportation system Steve Tragesser Mechanical and Aerospace...
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Space Sling for Earth/Moon transportation system Steve Tragesser Mechanical and Aerospace Engineering University of Colorado at Colorado Springs
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Transcript of Space Sling for Earth/Moon transportation system Steve Tragesser Mechanical and Aerospace...
Space Sling for Earth/Moon transportation system
Steve Tragesser
Mechanical and Aerospace Engineering
University of Colorado at Colorado Springs
Tether Sling Makeover
2007-2009
20112010
In action…
New design capable looking at the out-of-plane motion
I
J
K
S
E
Z
0 10 20 30 40 50 60 70 80 90 100-2
-1
0
1
Time (min)
(
deg)
0 10 20 30 40 50 60 70 80 90 100-0.2
0
0.2
Time (min)
(
deg)
0 10 20 30 40 50 60 70 80 90 100-1000
0
1000
Time (min)Delta T
eth
er
Length
(m
)
0 500 1000 1500 2000 2500 3000-0.5
0
0.5
Time (min)
(
deg)
0 500 1000 1500 2000 2500 3000-8-6-4-202
Time (min)
(d
eg)
0 500 1000 1500 2000 2500 30000
5
10
(d
eg)
Time (min)
Open Loop
Controlled (reeling)
Current challenges/opportunities
• Tether reel mechanics are still a major problem – it stymied NASA too so I guess we don’t feel
too ashamed…• Some problems with noisy sensor
– using low-pass filter seems to have fixed it?• We’ll need to rotate the base (table) to
excite significant out-of-plane motion
