SOW_NAWC_80084432_SlipRing_A12.pdf

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UNCLASSIFIED

Type 20 Radar

SLIP RING A12

Statement of Work July 2024

Document Number: 80084432

Revision C

Prepared by Naval Air Warfare Center Weapons Division (NAWCWD)

Weapons Control and Integration Branch Code D55J300 STOP 6633

China Lake, CA 93555-6110

DISTRIBUTION STATEMENT D: Distribution authorized to the Department of Defense and U.S. DoD contractors only; Critical Technology, March 2010. Other U.S. requests shall be referred to COMNAVSEASYSCOM (SEA 09P3) and PEO SUB (PMS435) and NAVSEA 09P3 or higher DOD authority.

WARNING: This document contains technical data whose export is restricted by the Arms Export Control Act (Title 22, U.S.C., Sec. 2751, et.

Seq.) or the Export Administration Act of 1979, as amended, Title 50, U.S.C., App. 2401 et seq. violations of these export laws are subject to severe criminal penalties. Disseminate in accordance with provisions of OPVAVINST 5510.161.

DESTRUCTION NOTICE – Classified Information, destroy in accordance with the DOD 5220.22-M, National Industrial Security Program Operating Manual. Unclassified limited documents, (e.g., FOUO, distribution statement control) destroy by any methods that will prevent disclosure of contents or reconstruction of the document.

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1. OBJECTIVE

Naval Air Warfare Center Weapons Division (NAWCWD) requires high quality slip rings for the Common Core Radar (CCR) program. A current design and proven product must be updated to meet enhanced performance requirements. This specification and reference 2.1 define the Slip Ring required specification. Other references in section 2.0 and as indicated on reference 2.1 are applied as defined within this specification or reference 2.1. Slip ring signals are:

• three (3) differential low voltage (<5 Volts dc) signals with returns and signal grounds,

• one (1) 10Base2 signal with its own shield,

• one (1) Giga-bit Ethernet, and

• one (1) 16-vdc power and return with Chassis Ground to 10 amps.

2. APPLICABLE DOCUMENTS

The following references are applied as stated in the following sections.

2.1. NAWC 80084397_A12M_REVC Slip Ring

2.2. MIL-STD-810G Test Method Standard for Environmental Engineering Considerations and Lab Tests

2.3. MIL-STD-461G, current revision, Electromagnetic Emission and Susceptibility Requirements for the Control of

Electromagnetic Interference.

2.4. NAVSEA Instruction 5100.3B, Mercury Exclusion

3. TECHNICAL DESIGN AND PERFORMANCE REQUIREMENTS

The Slip Ring is fabricated to the mechanical dimensions and with functional interfaces defined in NAVAIR drawing reference 2.1 and as shown in the sketch below.

GMPM2-B112PT-16K1-460M

M80 -4602605

DIRECT DIRECT

MNSO -09 -V4 -N-ETH MNSO -15 -V4-N-ETH

SLIP RING

DIRECT

MNSO -15 -V4-N-ETH

J48

J46 J47

P16 P56

P 4 3

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3.1 ELECTRO-MECHANICAL CONNECTORS

The slip ring has three connectors within the slip ring housing.

J46 & J48 CONNECTOR

J46 connects to J48 and transmits Gigabit Ethernet (802.3ab) signals. Both connectors are a fifteen (15) Nano-pin Omnetics MNSO-15-V4-N-ETH.

Signal Name FROM: SLIP RING TO: J46 Pin #

FROM: SLIP RING

TO: J48 Pin #

Current/Pairing requirements

CGND Shell Shell

GND 1 1 Ground ref., no current GND 2 2 Ground ref., no current Ethernet A+ 3 3

802.3ab Ethernet A- 4 4 GND 5 5 Ground ref., no current GND 6 6 Ground ref., no current Ethernet B+ 7 7

802.3ab Ethernet B- 8 8 Ethernet C+ 9 9

802.3ab Ethernet C- 10 10 GND 11 11 Ground ref., no current GND 12 12 Ground ref., no current Ethernet D+ 13 13

802.3ab Ethernet D- 14 14 GND 15 15 Ground ref., no current

J47 CONNECTOR

J47 is a nine (9) pin Omnetics MNSO-09-V4-N-ETH.

Signal Name FROM: SLIP RING TO: J47 Pin #

FROM: SLIP RING

TO: W18 P43

Current/Pairing requirements

CGND Shell Shell

- 1 -

DIFFa+ 2 19 100 Ohm Differential pair DIFFa- 3 20

DIFF-COM+ 4 25

50 Ohm Differential pair DIFF-COM- 5 26

DIFFb+ 6 21 100 Ohm Differential pair DIFFb- 7 22

DIFFc+ 8 23 100 Ohm Differential pair DIFFc- 9 24

MOUNTING

Connectors J46, J47, and J48 are mounted as vertically launched connectors.

CUTOUT

Reference 2.1 shows slip ring cover provides a cutout to access recessed J46, J47, or J48 connectors.

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GROUNDING

The connector shells are grounded to the Slip Ring chassis with < 5 milliohm resistance.

3.2 ELECTRO-MECHANICAL CABLES

Three cables, W15, W18, and W26 are direct cable leads emanating from the slip ring housing (soldered in place, emerging from the slip Ring housing with no connector at housing surface). Lengths of each cable are identified in reference 2.1.

W15 CABLE

W15 is a 16 AWG Twisted Shielded Pair cable which provides 16 VDC at P56, which is a GlenAir GMPM2-B112PT- 16K1-460M. Length is identified in reference 2.1. The Shield shall be carried from the shell of P56 using a backshell or other method and be connected to the slip ring case.

Signal Name FROM: W15 P56

TO: SLIP RING

FROM: SLIP RING

TO: W18 P43

Current/Pairing requirements

Shield Shell Shell Shield – no current

GND A 9,10,11,12 4 Ᾱ, 5 Ầ, 16 V, DC

16V_Main B 1,2,3,4 4 Ᾱ, 5 Ầ, 16 V, DC

Note: P56-A (GND) is rounded side of GlenAir GMPM2-B112PT-16K1-460M

W26 CABLE

W26 is a 16 AWG Twisted Shielded Pair cable which provides 16 VDC to P16, which is a GlenAir GMPM2-B112PT- 16K1-460M. Length is identified in reference 2.1. The Shield shall be carried from the shell of P16 using a backshell or other method and be connected to the slip ring case.

Signal Name FROM: W26 P16

FROM: SLIP RING

TO: W18 P43

Current/Pairing requirements

Shield Shell Shell Shield – no current

GND A 5,6,7,8 4 Ᾱ, 5 Ầ, 16 V, DC

16V_Main B 14,15,16,17 4 Ᾱ, 5 Ầ, 16 V, DC

Note: P16-A (GND) is rounded side of GlenAir GMPM2-B112PT-16K1-460M

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W18 CABLE

W18 is a shielded cable terminated at P43 and the Slip Ring. The cable consists of sixteen (16) 26 AWG wires which provide 16 Volts dc and GND to P56 and P16, a chassis ground (CGND), a Slip Ring GND, and four (4) 28 AWG Differential pair signals to J47. The cable has a Harwin M80-4602605 (connector number P43) on one end, and enters the Slip Ring directly through the other end. Length is indicated in reference 2.1.

Signal Name FROM: W18 P43

FROM: SLIP RING

TO: **

Remarks

Shield Shield - Connect Shield to Slip Ring Chassis

16V_MAIN

W15 P56-B

8 Ᾱ, 10 Ầ, 16 Vdc

W26 P16-B 15

GND

W15 P56-A

8 Ᾱ, 10 Ầ, 16 Vdc

W26 P16-A

18 GND

Connect to internal GND of the Slip Ring

CGND 13 Connect to Case

DIFFa+ 19 J47-2 0.01 Ᾱ, 0.1 Ầ, 1 V, 10 MHz DIFFa- 20 J47-3 0.01 Ᾱ, 0.1 Ầ, 1 V, 10 MHz DIFFb+ 21 J47-6 0.01 Ᾱ, 0.1 Ầ, 1 V, 10 MHz DIFFb- 22 J47-7 0.01 Ᾱ, 0.1 Ầ, 1 V, 10 MHz DIFFc+ 23 J47-8 0.01 Ᾱ, 0.1 Ầ, 1 V, 10 MHz DIFFc- 24 J47-9 0.01 Ᾱ, 0.1 Ầ, 1 V, 10 MHz

DIFF-COM+ 25 J47-4 0.1 Ᾱ, 0.1 Ầ, 5 V, 10 MHz DIFF-COM- 26 J47-5 0.1 Ᾱ, 0.1 Ầ, 5 V, 10 MHz

CABLE EXITS

Cables W15, W26, and W18 shall exit the slip ring housing 45o radially outward from the slip ring face as indicated in reference 2.1.

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3.3 ENVIRONMENTAL SPECIFICATIONS

Shelf Life The slip ring assembly shall have a shelf life of 30 years, wherein it will have been subjected to the storage environments defined below, as demonstrate by tests methods listed.

Storage Temperature Temperature of - 40 to +85 degrees Centigrade Ref 2.2, Methods 501.5 High Temperature and 502.5 Low Temperature Procedure I-storage constant temperature exposure (not cyclic exposure)

Storage Humidity Standard Ambient (Relative Humidity 20-80%), Ref 2.2, Method 507.5 tailored

Handling & Assembly During acceptance and/or assembly, the slip ring will be subject to the following environmental dynamic changes, without loss of functional performance after restored to operation environment.

Handling Shock Use Ref 2.2, Methods:

516.6 I (Functional – see table 516.IV, Step 4.62 Procedure I – Functional Shock) and

516.6 -VI (Packaged: per table 516.6-VI Transit Drop: drop from 48 in, on each face, edge, corner – total of 26 drops).

Pressure Transients Withstand a vacuum to 0.25 +0/-0.15 Torr for 24 hrs.

Withstand a single-event pressure increase from ambient at of 2.0 +0.5/−0 psig of R134a refrigerant with nitrogen added until the component internal pressure reaches a terminal pressure of 50.0 +5.0/-0 psia, then to withstand that terminal pressure for 30 minutes.

Operational Environment

MTBF

Once made operational, the slip ring assembly shall be designed to operate with signal continuity and signal isolation performance remaining within 95% of original acceptance measurements after 9,000 hours of operation at 1 Hz rotation rate and when subjected to the operational marine environments listed below and as will be proven using the analytical and test methods indicated and tailored.

Temperature -40 to +85 degrees Centigrade Ref 2.2, Methods 501.5 High Temperature and 502.5 Low Temperature Procedure II, constant temperature exposure (not cyclic exposure).

Pressure Enclosed in dry nitrogen or dry air atmospheric housing at 15.0 +5/-0 psig maintained.

Humidity Dew point less than -20oC Ref 2.2, 507.5 tailored.

Note: Nominal diurnal cycle: (1) Assembly is OFF (No adjacent thermal load) & thermally saturated at -4oC; (2) Enter ambient Temp of -40oC; (3) Soak temp cools to -20oC;

(4) condensation accumulates until unit is turned on to operate, which coincides with internal thermal loads to raise internal ambient temp above -20oC. Ref 2.2, 520.4, tailored

Vibration Ref 2.5, Up to 28 Hz vibration.

Ref 2.2, Method 514.6 Vibration or 520.3 Temperature, Humidity, Vibration and Altitude, 9 / 9 UNCLASSIFIED

3.4 EMI

The slip ring assembly shall perform in accordance with the Electro Magnetic Interference (EMI) standard defined in reference 2.3.

(1) Perform RE101 in accordance to Reference 2.3.

(2) Perform CS114 in accordance to Reference 2.3.

3.5 SIGNAL CONTINUITY

While rotating at 60 RPM, the End-to-End signal continuity of each input to its respective output(s) shall achieve an average resistance which remains less than 20 milliohms when captured for a 10 second duration measurement.

3.6 SIGNAL ISOLATION

While rotating at 60 RPM, Pin-to-Pin average isolation resistance of each connector remains greater than 10 Mega Ohms when captured for a 1-minute duration measurement. All low voltage (≤5 V) connector pins and cable wires require 20 dB crosstalk isolation.

To verify signal line to other signal lines are isolated at signal voltage and signal frequency, perform the following:

Using a signal generator, transmit an input 100 Mhz signal at-1 Volts dc to +1 Volts dc down each signal line and using an oscilloscope measure the observed signal level on both ends of all other signal lines. Observed Signal on other signal lines shall be 20 dB lower than signal line being transmitted on.

3.7 IMPEDANCE

While conducting EMI tests in 3.4, measure and record the impedance of each signal line.

3.8 16 VDC POWER CONTINUITY

While rotating at 60 RPM and unpowered, the continuity of the 16 Volts dc power line End-to-End (input to its two outputs) shall achieve an average resistance which remains less than 20 Milli Ohms when captured for a 10 second duration measurement.

When rotating at 60 RPM and powered with a 20-watt load on W26 and a 40-watt load on W15, the average voltage drop of 16 Volts dc power line (voltage at input to its respective outputs) remains less than 100 millivolts when captured for a 10 second duration measurement.

3.9 16 VDC POWER ISOLATION

While rotating at 60 RPM and unpowered, Pin-to-Pin isolation (insulation) resistance of each connector remains greater than 10 Mega Ohms when captured for a 1-minute duration measurement.

While rotating at 60 RPM and powered, Power Line Pin-to-Signal Line Pin voltage of each connector remains less than 100 millivolts when captured for a 1-minute duration measurement.

3.8 MECHANICAL SPECIFICATIONS

The slip ring assembly shall meet the mechanical constraints defined by Reference 2.1 and as indicated below.

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Operating Speeds Nominal 60 RPM constant speed operation will be in the forward direction (clockwise, looking down onto rotor - sheet 1, reference 2.1).

Internal Bearing One bearing lubricated as defined below Bearing Lubrication Low temperature grease in accordance with Mil-G-23827C and selected for long periods of non-rotation (ie minimize grease migration).

Oscillatory Motion: None Torque Starting and running torque are to be less than 1500 gm-cm

3.9 MARKINGS

The slip ring assembly housing, cable wire numbers, (and connectors on production units) shall be marked with the wiring nomenclature shown on the referenced NAWC interface drawing using an abrasion resistant black ink or other indelible marking. The slip ring assembly part number and serial number shall be marked in a similar way.

3.10 MERCURY EXCLUSION

The supplies furnished under this contract shall not contain functional mercury in accordance with Ref 2.4. Functional mercury is that mercury or mercury compound required for proper operation of the supplies or without the presence of which the supplies would fail to function properly. External contamination by metallic mercury or mercury compounds shall be cause for rejection of the supplies. The mercury vapor concentration in trapped air about any tested item(s) shall not exceed 0.01 mg per cubic meter.