SINGLE- LIGHTWEIGHT SHIPBOARD TILT UNIT OA-9243A (V) 3 S/R
- Weight: 856 lbs
- Height:
Raised 39 inches
Lowered 26.25 inches - Depth:
Vertical 22 inches
90° 36 inches - Tilt Angle Presets: 90°, 105°, 115°
- Operating Speed:
Powered: 90° in 19.6 seconds
Manual: 132 turns -90° - Operating Capacity:
Static Load 1,000,000 in/lb
Dynamic Load 100,000 in/lb - Motor: 1 HP 440 VAC, Ø Type 1 Shipboard
- Controller: Size 1 conforming to MIL-C-2212
Environmental Qualifications (MIL-E-16400) - Shock: MIL-S-901C
- Vibration: MIL-STD-167-1
- MIL-STD-801D: Temperature, Salt Fog, UV, Electrical, Enclosure, Ice, Dust, Humidity, & Inclination
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Description
SINGLE- LIGHTWEIGHT SHIPBOARD TILT UNIT
OA-9243A (V) 3 S/R
The STU-3 series shipboard tilt units are modular electromechanical systems for lowering and raising dual shipboard communication antennas. These units and the dual antenna variants (STU-4 series) have over 90% commonality of components.
The drive element is a two-stage planetary gearbox. The STU-3HD series uses a 2-horsepower brakemotor, while the STU-3LW uses a 1-horsepower brakemotor. The electrical controls are located in the pedestal for local operation, while an optional remote control will operate up to three units at a maximum of 1,200 feet away. A manually operated handcrank provides emergency control in the event of electrical failure. Tilt angles may be preset to any angle from vertical through 115°, and powered rotation from vertical to 90° horizontal takes only 20 seconds. All units may be tilted inboard to expedite antenna maintenance, removal or installation. Converting from single to dual antenna configuration is accomplished by installing another support arm. Provisions for mounting antenna tuners and couplers are available in rotating elements, permitting antenna feedwire lengths to be kept to a minimum. Compression pads are activated at vertical and horizontal limits to reduce shock and vibration loads from being transmitted to the rotating elements. Cam operated limit switches control the vertical and horizontal positioning. An overtravel limit switch removes all power to the drive motor in the event of limit switch failure. The STU-3HD & STU-4HD (HEAVY DUTY) units are designed to withstand loads of 1,000,000 in/lb, and are normally used where green water loads are a major concern. Manual crank versions are also available.
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SINGLE- HEAVY DUTY SHIPBOARD TILT UNIT OA-9242A (V) 3 S/R
- Weight: 964 lbs
- Height: RAISED 39 inches LOWERED 26.25 inches
- Depth: VERTICAL 22 inches 90° 36 inches
- Tilt Angle Presets: 90°, 105°, 115°
- Operating Speed: POWERED 90° in 19.6 seconds MANUAL 132 turns -90°
- Operating Capacity: STATIC LOAD 1,000,000 in/lb DYNAMIC LOAD 100,000 in/lb
- Motor: 2 HP 440 VAC, Ø Type 1 Shipboard
- Controller: Size 1 conforming to MIL-C-2212 Environmental Qualifications (MIL-E-16400)
- Shock: MIL-S-901C
- Vibration: MIL-STD-167-1
- MIL-STD-801D: Temperature, Salt Fog, UV, Electrical, Enclosure, Ice, Dust, Humidity, & Inclination
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