Data Sheet: GORE® Microwave Sealed Airframe Assemblies

United States

Includes description, typical uses, sample applications, features and benefits, technical specifications, and ordering information.


High-Performance Vapor-Sealed Cable Assemblies for Airborne Applications

With superior electrical performance, Gore Microwave Sealed Airframe Assemblies (7-Series) are specifically designed for airframe microwave interconnect needs. These assemblies are qualified for aerospace applications and meet the MIL-T-81490 mechanical and environmental requirements (listed in Table 2) for airframe cables.

Gore Microwave Sealed Airframe Assemblies are vapor sealed to prevent the ingress of water vapor, jet fuel, and other contaminants to ensure that they maintain their electrical performance over the entire life cycle. They provide consistently reliable performance with longer service life and reduced system downtime, resulting in lower life cycle costs for the aircraft operator.

These assemblies are designed to satisfy the most stringent specification requirements of the next generation of military and commercial aircraft.

Typical Applications

  • Airframe interconnects for electronic defensive systems (signal detection, interception, identification)
  • Electronic payload interconnects including active electronically scanned array (AESA) radar
  • Commercial and business aircraft SATCOM connectivity

Benefits of Gore Microwave Sealed Airframe Assemblies

  • Durable vapor sealing prevents ingress of contaminants
  • Flexible cable assemblies for ease of installation
  • Easy routing in confined spaces due to small diameter
  • Outstanding shielding effectiveness from durable cable construction
  • Low insertion loss for a given diameter
  • Maintains insertion loss, return loss, and phase performance over entire life cycle
  • Meets the mechanical and environmental requirements for airframe cables defined in MIL-T-81490
  • Comprehensive qualification data available to support product claims
Gore Microwave Sealed Airframe Assemblies Construction

Table 1: Specifications*

Cable Type 7G 75 7E 7L 7M
Max Frequency (GHz) 40.0 18.0 18.0 7.0 2.0
Impedance (ohms) 50 ± 1 50 ± 1 50 ± 1 50 ± 1 50 ± 1
Dielectric Constant 1.4 1.4 1.4 1.4 1.4
Insertion Loss at Max Frequency dB/m (dB/ft) 2.56 (0.78) 1.05 (0.32) 0.62 (0.19) 0.33 (0.10) 0.129 (0.04)
Velocity of Propagation 85% 85% 85% 85% 85%
Time Delay ns/m (ns/ft) 3.94 (1.2) 3.94 (1.2) 3.94 (1.2) 3.94 (1.2) 3.94 (1.2)
Shielding Effectiveness (dB to Max Frequency) > 90 > 90 > 90 > 90 > 90
Cable Type 7G 75 7E 7L 7M
Outer Diameter mm (in) 3.80 (0.150) 5.30 (0.210) 8.50 (0.335) 12.32 (0.485) 14.35 (0.565)
Mass g/m (oz/ft) 36.0 (0.39) 63.0 (0.67) 150.0 (1.61) 262.0 (2.82) 328.0 (3.52)
Minimum Bend Radius mm (in) 19.0 (0.75) 25.0 (1.0) 50.0 (2.0) 62.5 (2.5) 80.0 (3.15)
Center Conductor Solid Solid Solid Stranded Solid
Operating Temperature °C (°F) -58 to +200a (-72 to +392) -58 to +200a (-72 to +392) -58 to +200a (-72 to +392) -58 to +200a (-72 to +392) -58 to +200a (-72 to +392)
Crush Resistance kgf/cm (lb/in) 8.95 (50.0) 8.95 (50.0) 8.95 (50.0) 8.95 (50.0) 8.95 (50.0)

* All values listed are nominal
a Contact a Gore representative for applications with an operating temperature > 175°C.

Table 2: Qualification Summary

Summary of the qualification compliance for Gore Microwave Sealed Airframe Assemblies.

Examination or Test Specification Status
Seal - Vapor Leakage MIL-STD-202, Notice 9, Method 112E, paragraph 5, Condition C, Procedure IV Compliant
Temperature Shock MIL-STD-810, Method 503.2 Compliant
Vibration MIL-STD-810, Method 514.3, Procedure I Compliant
Power Handling Capability MIL-T-81490, paragraph 4.7.13 Compliant
Flexure MIL-T-81490, paragraph 4.7.15 Compliant
Tensile Load MIL-T-81490, paragraph 4.7.17 Compliant
Concentrated Load MIL-T-81490, paragraph 4.7.18 Compliant
Abrasion MIL-T-81490, paragraph 4.7.19 Compliant
Sand and Dust MIL-STD-810, Method 510.2, Procedure I Compliant
Humidity MIL-STD-810, Method 507 Compliant
Salt Fog MIL-STD-810, Method 509, Exposure ≥ 96 hours Compliant
Dielectric Withstanding Voltage MIL-STD-202, Method 301 Compliant
Icing/Freezing Rain MIL-STD-810, Method 521.0 Compliant
Fungus Resistance MIL-STD-810, Method 508.3 Compliant
Rain - Drip MIL-STD-810, Method 506.2, Procedure II Compliant
Rain - Blowing Rain MIL-STD-810, Method 506.2, Procedure I Compliant
Corona Extinction Voltage MIL-C-17, paragraphs 3.7.5 and 4.8.6 Compliant

Ordering Information

To place an order for GORE® Microwave Sealed Airframe Assemblies, please contact your Gore sales associate or visit gore.com for additional ordering information.

NOTICE — USE RESTRICTIONS APPLY
Not for use in food, drug, cosmetic or medical device manufacturing, processing, or packaging operations.

GORE and designs are trademarks of W. L. Gore & Associates ©2015 W. L. Gore & Associates, Inc. GMCA-0052-R2-DAT-US-NOV15