GLENAIR
DO-160, ENVIRONMENTAL CONDITIONS AND TEST PROCEDURES FOR AIRBORNE EQUIPMENT AND AIRCRAFT ZONES Effective EWIS design is best accomplished by aligning DO-160, Environmental Conditions and Test Procedures for Airborne Equipment, with the empirical environmental performance levels targeted for each zone, section, and equipment set on the aircraft.
ZONE 2: INSTRUMENT PANEL, CONSOLE, AND EQUIPMENT RACK Pressurized Fluids - Condensation, Humidity Typical Temperature Range -65° to +95°C Moderate Dynamic Vibration Range Flammability, Smoke, and Toxicity Requirements
ZONE 1: FUSELAGE Pressurized Fluids - Condensation, Humidity Typical Temperature Range -65° to +95°C Moderate Dynamic Vibration Range Flammability, Smoke, and Toxicity Requirements
ZONE 8: CABIN INTERIOR VOLUME Pressurized Fluids - Condensation, Humidity Typical Temperature Range -65° to +95°C Moderate Dynamic Vibration Range Flammability, Smoke, and Toxicity Requirements
ZONE 6: LANDING GEAR High Vibration Wide Temperature Range -55° to +150°C Fluid Exposure Wide Pressure Changes
ZONE 4: ENGINE AND GEAR BOX Dynamic Vibration Environment Extreme Temperature Range -65° to +200° Firewall Fuels and Fluids
ZONE 5: WING AND WHEEL WELL High Vibration Extreme Temperature Range
ZONE 3: NACELLE AND PYLON Dynamic Vibration Environment Extreme Temperature Range -65° to +200° Firewall Fuels and Fluids
-55° to +200°C Fluid Exposure Wide Pressure Changes
AIRCRAFT ZONES: MACRO ENVIRONMENTS Significant variability exists between the various macro environments of a modern commercial aircraft (dynamic stimulus, moisture, humidity, thermal extremes, and so on). Environmental stress factors place a demand on the electrical interconnect components that must perform for the expected life of 20 years. Macro environments range from the cabin interior—where the challenge is mainly moisture / humidity—to extreme unpressurized zones such as wing and wheel wells where extreme dynamic stimuli combined with thermal extremes can rapidly degrade the performance and life expectancy of interconnect technologies.
Qwik Connect • April 2019
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