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AIR TRAFFIC CONTROL ROTARY JOINTS

AIR TRAFFIC CONTROL ROTARY JOINTS

Product catalog summary

Introduction
SPINNER is a prominent manufacturer of rotary joints used in radar systems, especially for air traffic control (ATC). These components are crucial for signal transmission between stationary platforms and rotating antennas in various radar systems such as Surface Movement Radar (SMR), Precision Approach Radar (PAR), Air Surveillance Radar (ASR), and Doppler Weather Radars (DWR). SPINNER's rotary joints are noted for their compact design, excellent Voltage Standing Wave Ratio (VSWR), low insertion loss, and high crosstalk attenuation.

Fiber Optic Rotary Joints
SPINNER provides multichannel fiber optic rotary joints characterized by low insertion loss and high return loss. These joints are designed to handle high optical power with minimal crosstalk between channels, constructed from durable materials like aluminum alloy and stainless steel.

Coax Rotary Joints
The document describes various coax rotary joints, including options with 3, 4, and 9 channels. These joints are designed for high-frequency applications, offering low VSWR, minimal insertion loss, and high isolation, suitable for high peak and average power handling.

Waveguide/Coax Rotary Joints
SPINNER offers waveguide/coax rotary joints with multiple channel configurations, designed for specific frequency ranges and power levels, providing low insertion loss and high isolation for both military and civil applications.

Specifications and Technical Data
The document provides detailed specifications for rotary joints and slip rings, including mechanical data, electrical requirements, and environmental conditions. Key parameters include rotational speed, torque, material construction, and protection levels. A technical annex offers additional insights into performance and testing standards.

Conclusion
SPINNER's rotary joints are vital for the safety and efficiency of air traffic management systems, trusted by major European customers. The company also provides repair and maintenance services for all ATC rotary joint brands.

Specifications

RF Channel Characteristics: Details on frequency ranges, peak and average power, VSWR, insertion loss, isolation, and phase WOW for different channels and bands (S-band, L-band).
General Mechanical Data: Maximum rotating speed of 60 rpm, life expectancy up to 50 million revolutions, torque up to 50 Nm, and case material of aluminum alloy with chromate conversion coat.
Environmental Conditions: Operating temperature from -55°C to +85°C, maximum relative humidity of 95%, and IP protection levels from IP53 to IP66.

Procedures and Maintenance

Maintenance Period: Minimum maintenance period of 20 million revolutions.
Leakage and Pressure: Maximum leakage rate of 25 cm³/minute, with specified differential operating pressures for various models.

Encoder and Slip Rings

Encoder Interface: Various types and manufacturers, including models from SICK and BEI-IDEACOD.
Slip Rings Characteristics: Total number of ways varies from 14 to 38 depending on the model.

Recommendations and Best Practices

Storage Conditions: Storage temperature from -55°C to +85°C, with a maximum relative humidity of 95%.
Material and Finish: Use of aluminum alloy with a chromate conversion coat for durability and resistance.

Critical Parameters

Isolation: Minimum isolation consistently 60 dB across models.
Phase WOW: Maximum phase WOW specified between 1 to 2.5 degrees.

Additional Notes
Data is subject to change without notice, and specific configurations may vary based on customer requirements.

General Environmental Conditions
Specifications for operation and storage conditions, including ambient temperature ranges and maximum relative humidity, with defined IP protection levels.

Spinner Rotary Joint Specification
Details on fiber optic channel characteristics, including the number of channels, interface type, fiber type, and performance metrics like return loss and insertion loss. Media rotary joint characteristics cover operational pressures, flow rates, and liquid composition.

Slip Ring Specification
Mechanical data such as rotational speed, torque, and dimensions, along with electrical requirements including current, voltage, frequency, and isolation resistance.

Required Quality Documents
Includes Certificate of Conformance (CoC) according to DIN 55350-18, government source inspection, and environmental tests.

Technical Annex
Definitions and descriptions of components and terms related to rotary joints, such as channels, contacting and non-contacting rotary joints, slip rings, and swivel joints. RF channel characteristics like attenuation, average power, and insertion loss are explained.

Interface Orientation and Type
Describes orientation styles (I-style, U-style, L-style) and interface types (waveguide or coaxial) for rotary joints, including standards and protection features.

Isolation Types
Discussion on forward and reverse isolation in rotary joints, with worst-case values typically ranging from 50 to 70 dB, and up to 100 dB for high-power designs.

Peak Power
Defines the maximum short-term power a component can handle without breakdown, influenced by factors like air pressure and temperature. Coaxial rotary joints handle peak power from 1 to 10 kW, while waveguide joints can handle up to 1 MW.

Phase Difference and Tracking
Describes the phase difference between channels and their synchronism over rotation, ensuring good synchronism despite individual variations.

Return Loss and VSWR
Return loss is the logarithmic ratio of incident to reflected power, indicating component matching. VSWR variation over rotation is discussed, with typical values between 0.02 and 0.2.

Mechanical Data
Covers materials, surface finishes, interface loads, leakage rates, and lifetime of rotary joints, emphasizing proper installation for desired IP protection ratings.

Environmental Characteristics
Includes ambient temperature ranges, application environments, and compliance with standards like MIL-STD-810G for conditions such as fungus, rain, and vibration.

Unit Conversion and Standards
Provides conversion factors and compliance information for various environmental and mechanical standards.

Pressure and Altitude Data
Table correlating altitude in meters with atmospheric pressure in hPa, ranging from 1500m (845.58 hPa) to 10000m (264.42 hPa).

Unit Conversion Tables
Conversion tables for pressure, mass, length, temperature, power, volume, force, and torque.

Waveguide Specifications
Lists waveguide designations with internal dimensions, frequency bands, and common uses, following standards from IEC, EIA, and MOD UK.

VSWR Conversion Table
Table for converting VSWR to reflection coefficient and return loss in dB, ranging from VSWR 1.010 (46.1 dB) to 1.930 (10.0 dB).

Contact Information
Contact details for SPINNER offices worldwide, including locations in Germany, France, Russia, Spain, Sweden, China, UAE, USA, UK, Austria, and Brazil.

Catalog excerpts

SPINNER || AIR TRAFFIC CONTROL ROTARY JOINTS high Frequency Performance Worldwide www.spinner-group.com

Open the catalog to page 1

SPINNER || aIR tRaffIc coNtRol RotaRy joINtS Data subject to change without notice – Edition A

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SPINNER || aIR tRaffIc coNtRol RotaRy joINtS afety is the highest demand in a high-density airspace. This affects air trafc management in the civil and military domain. This relies mostly on highly sophisticated radar systems for airport surface movements, air surveillance, en-route tracking and weather observation. As an international leader in innovation, SPINNER is a reliable supplier of advanced components for radar systems. Since the early sixties SPINNER sets standards worldwide. Our innovations in this field together with our technical knowhow and our top quality claim have allowed us...

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SPINNER || aIR tRaffIc coNtRol RotaRy joINtS SPINNER || RotaRy joINt SPEcIfIcatIoN Company: _______________________________________ cuStoM-MadE RotaRy joINtS Contact Name: _______________________________________________________ Project / Delivery Contry: __________________________________________________________________________________________________ Application: For an enquiry to a custom-made rotary joint, our specification sheet assists you defining your system. Please find it at the end of this catalogue on page 24. Required Quantity: RF channel chaRacteRistics - total number of channels:...

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SPINNER || air traffic control rotary joints 2 channel Fiber optic rotary joint Fiber optic channel characteristics Interface type / material Fiber type Cross talk, min. Optical power, max. Slip rings characteristics Total number of ways * Measurement method acc. to standard IEC 61300-3-6 method 1 ** Measurement method acc. to standard IEC 61300-3-4 insertion method (C). General mechanical data Rotating speed, max. Life, min. Starting torque, max. Torque during rotation, max. Case material Case surface finish Weight, approx. 60 rpm 40 x 106 revolutions 3 Nm @ room temperature 3 Nm @ room temperature...

Open the catalog to page 6

SPINNER || air traffic control rotary joints 2 channel Fiber optic rotary joint Fiber optic channel characteristics Interface type / material Fiber type Cross talk, min. Optical power, max. Slip rings characteristics Total number of ways * Measurement method acc. to standard IEC 61300-3-6 method 1 ** Measurement method acc. to standard IEC 61300-3-4 insertion method (C). General mechanical data Rotating speed, max. Life, min. Starting torque, max. Torque during rotation, max. Case material Case surface finish Weight, approx. 60 rpm 20 x 106 revolutions 3 Nm @ room temperature 3 Nm @ room temperature...

Open the catalog to page 7

SPINNER || air traffic control rotary joints 4 channel Fiber optic rotary joint Fiber optic channel characteristics Interface type / material Fiber type Cross talk, min. Optical power, max. Slip rings characteristics Total number of ways * Measurement method acc. to standard IEC 61300-3-6 method 1 ** Measurement method acc. to standard IEC 61300-3-4 insertion method (C). General mechanical data Rotating speed, max. Life, min. Starting torque, max. Torque during rotation, max. Case material Case surface finish Weight, approx. 60 rpm 20 x 106 revolutions 3 Nm @ room temperature 3 Nm @ room temperature...

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SPINNER || air traffic control rotary joints 3 channel coax rotary joint | L-Band RF channel characteristics Channel designation Frequency range General mechanical data Rotating speed, max. Life, min. Torque during rotation, max. Case material Case surface finish, Weight, approx. alluminium alloy alluminium alloy, chromate conversion coat 8 kg General environmental conditions Operation Ambient temperature range Storage Ambient temperature range Relative humidity, max. Data subject to change without notice – Edition A

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SPINNER || air traffic control rotary joints 3 channel coax rotary joint | L-Band 241.9 190.9 141.4 96.1 50.8 RF channel characteristics Channel designation Interfaces Frequency range Encoder Interface characteristics Type / manufacturer General mechanical data Rotating speed, max. Life, min. Torque during rotation, max. Case material Case surface finish Weight, approx. aluminium alloy chromate conversion coat / painted 17 kg General environmental conditions Operation Ambient temperature range Storage Ambient temperature range Relative humidity, max. Data subject to change without notice – Edition...

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SPINNER || air traffic control rotary joints 3 channel coax rotary joint | L-Band 319.4 279.4 198.3 128.3 58.3 RF channel characteristics Channel designation Frequency range Encoder Interface characteristics Type / manufacturer General mechanical data Rotating speed, max. Life, min. Torque during rotation, max. Case material Case surface finish Weight, approx. aluminium alloy chromate conversion coat / painted 14 kg General environmental conditions Operation Ambient temperature range Storage Ambient temperature range Relative humidity, max. Data subject to change without notice – Edition A

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SPINNER || air traffic control rotary joints 3 channel coax rotary joint | L-Band 393 367.4 327.4 287.4 141.4 96.1 RF channel characteristics Channel designation Interfaces Frequency range Encoder Interface characteristics Type / manufacturer Slip rings characteristics Total number of ways General mechanical data Rotating speed, max. Life, min. Torque during rotation, max. Case material Case surface finish Weight, approx. aluminium alloy chromate conversion coat / painted 22 kg General environmental conditions Operation Ambient temperature range Storage Ambient temperature range Relative humidity,...

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SPINNER || air traffic control rotary joints 3 channel waveguide coax rotary joint | S-Band RF channel characteristics Channel designation Interfaces Frequency range Slip rings characteristics Total number of ways General mechanical data Differential operating pressure, max./nom. Leakage rate, max. Rotating speed, max. Torque during rotation, max. Case material Case surface finish Weight, approx. aluminium alloy chromate conversion coat / painted 37 kg General environmental conditions Operation Ambient temperature range Storage Ambient temperature range Relative humidity, max. Data subject to...

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AIR TRAFFIC CONTROL ROTARY JOINTS

AIR TRAFFIC CONTROL ROTARY JOINTS

Catalog excerpts

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