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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