Target Manipulation Systems
Target Manipulation Systems
Target Manipulation SystemsTarget Manipulation Systems
Target Manipulation Systems (String Reel)
String Reel Target Manipulation Systems are
used to support targets for low frequency
Radar Cross Section (RCS) measurements.
Three sizes of string reel positioners are used
to handle various loads from scaled models to
full size targets.
Another use is for manipulation of a calibration
target in anechoic chambers.
A typical application requires 3 - 16 string reel
positioners for the various loads.
RCS PRODUCTS
www.orbitfr.com
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Target Manipulation Systems
Target Manipulation Systems
Target Manipulation SystemsTarget Manipulation Systems
Continuo
1
us
Peak
Load
Nominal Speed
Synchro Accuracy
Nominal String Diameter
Drive Power DC SERVO
Weight
String Type
Limit-to-Limit Travel
Mounting Details
Slip-Ring Options
Rotary Joint Options
1. Per 10ft of movement
AL-760-1B AL-1260-1B AL-1760-1B
lbs 500 1,500 3,000
lbs 500 1,500 3,000
ft/min 0 - 10 0 - 6.5 0 - 8
in 0.05 0.05 0.05
in 0.01 0.2 0.35
hp 1/3 3/4 3/4
kg 65 140 260
lbs 140 300 580
Nylon or Kevlar
m Adjustable 0 - 50
ft Adjustable 0 - 150
Same as AL-760-1P
Polarization Positioner
SR102,SR202, SR302
RJ12, RJ18, RJ40 Fiber Optics
Same as AL-1260-1P
Polarization Positioner
Same as AL-1760-1P
Polarization Positioner
RCS PRODUCTS
www.orbitfr.com
20
20
2020
Target Manipulation Systems
Target Manipulation Systems
Target Manipulation SystemsTarget Manipulation Systems
Safety
The Spool is grooved to ensure proper winding of
the string. The string is also protected by a close
fit cover and string guide to ensure proper
winding and unwinding of the string at "No Load"
condition.
Properties Of The String Reel Mechanism
• Absolute Readout
• The string is wound on one layer only for the
total 150 ft of travel. A dual-speed synchro is
the readout system, thus the typical resolution
is 0.005 inches.
• Compatibility: The system is operated with
standard power and control equipment as in all
ORBIT/FR antenna measurement instruments.
• Low friction: All parts in contact with the string
are Teflon-coated to reduce wear to a
minimum.
• The unit is based on ORBIT/FR polarization
positioner with addition of spool mechanism.
Thus, most features of the polarization
positioner can also be implemented in the string
reel unit.
• Totally enclosed design of the drive gear train
and data take-off.
• Precision heavy-duty bearings.
• Variety of options: Rotary Joints, Slip-Rings, etc.
• All models are equipped with a tachometer for
speed regulation and control.
All models are equipped with synchros operable at
both 50 Hz and 60 Hz.
RCS PRODUCTS
www.orbitfr.com
21
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