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Roto-LokŪ
Drive System and Antenna Positioners
designs
for ultimate performance, reliability, and durability
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FEATURES
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- Zero
to nearly zero backlash
- Very
stiff and reliable
- Redundant
cables
- All
aluminum, corrosive-resistant, and light
weight
- 2
or 3 axii positioners - az/el + roll
- Manual
hand cranks
- Customized
interface available
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The
patented Roto-LokŪ drive system utilizes highly-reliable aircraft
control cables in a redundant configuration to provide a
zero-backlash, lightweight, very stiff and accurate antenna
positioner. This high-tech performance is achieved using low-tech
components - by simply wrapping the cable around the driver
capstan several times before wrapping the larger driver drum.
This method results in a minimum free-length of cable. The load on
the cable on the main drum is exponentially reduced as it is
wrapped around the drum. Therefore, the total elongation of the
cable under load is minimized. The Roto-LokŪ system results in
stiffness of up to 10 times that of comparable gear or harmonic
drive systems. The cables are pre-tensioned and spring-loaded at
the main drum attachment point, which elements backlash at
installation and from any unexpected cable stretch in the future. |
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