Testing Disciplines
Dust
| AECO simulates naturally occurring and aircraft generated blowing dust conditions. Dust is also used to evaluate an enclosure’s degree of protection. | |
| Dust (fine sand) is performed to ascertain the ability of equipment to resist the effects of dust particles which may penetrate into cracks, crevices, bearings, and joints. | |
| An airborne dust environment, associated most often with the hot-dry regions of earth, also exists seasonally in other regions. Naturally occurring dust storms are an important factor in the deployment of equipment. With the increased mechanization of military operations man's activities cause more of a problem than does blowing dust purely associated with nature. An example of this would be a helicopter landing in the desert. | |
| This method applies to any mechanical, electrical, electronic, electrochemical, and electromechanical devices that may be exposed to the effects of a dry dust-laden atmosphere. | |
| Blowing Dust Effects | |
 Penetration of seals. |
Degradation of electrical
circuits. |
| Clogging of openings and filters |
Fouling of moving parts. |
| Physical interference with mating
parts. |
|
| Exothermal reaction (thermite
effects) of clay particles (with aluminum oxide) at high
temperatures, producing heat which could cause
high-temperature corrosion and produce extremely hard,
erosive particles. |
|
| Test Variables | |
| Air (wind) velocity |
Temperature |
| Dust concentration |
Dust composition |
| Test item
configuration, operation and orientation |
Test duration. |
| Operation of the test item, during the test period, should be based on the use requirements of the test item. | |
| Typical Test Specifications | |
| Testing is performed in accordance with US Military, Aerospace and European Normalized Standards. | |
|
MIL-STD-810 |
RTCA
DO-160 |
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