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5.4 Environmental Specifications
The following
Temperature and Altitude (DO-160D Section 4.0)
Category A2, Partially controlled temperature, Pressurized to 15,000 feet
Operating temperature | |
Short time high operating temp | +70C |
Loss of cooling | +40C |
Ground Survival | |
Altitude | 15,000 feet |
Decompression | 55,000 feet |
Overpressure |
Category F2,
Operating temperature | |
Short time high operating temp | +70C |
Loss of cooling | +40C |
Ground Survival | |
Altitude | 55,000 feet |
Decompression | N/A |
Overpressure | N/A |
In-Flight Loss of Cooling (DO-160D Section 4.5.4)
Category W, 90 minutes minimum
The MARK III shall be able to operate with no forced cooling air at an ambient of +40° Celsius for a period of 90 minutes.
Temperature Variation (DO-160D Section 5.0)
Category B,
The maximum temperature variation rate is 5° Celsius per minute.
Humidity
Category B, Severe Humidity environment
The unit shall withstand a 95% humidity, 10 day cycle.
Shock
Category – B
Vibration
Category – (UFF1)(SCLMY)
Explosion Proofness (DO-160D Section 9.0)
Category E
Non hermetically sealed equipment which meets the test requirements of environment I.
HONEYWELL Aerospace Electronic Systems | Page 53 |
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