AECTP 230 PDF

ICS, Doc ID, STANAG Ed 6. Title, CLIMATIC CONDITIONS – AECTP Edition 1. Original Title. Category, TS. Location. AECTP (Edition 1) Leaflet /2 World-wide Ambient Air Temperature and Humidity Conditions and Levels of Direct Solar Radiation Additional Climatic. NATO AECTP CLIMATIC CONDITIONS. Amendment by NATO Publication, 05/01/ This document is an amendment. View the base document.

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Expected induced levels should be determined from specific measurements for particular applications. For externally carried stores, especially when deployed on aircraft operating in wet tropic regions, the variation in temperature of the internal atmosphere resulting from operation of the equipment, may have a similar effect.

Once temperature-stabilised, moisture penetration will be more by absorption than induced pressure differentials and by natural or forced-air circulation. The relative humidity inside installed equipment with semi-sealed, unventilated enclosures will be reduced gradually by selfdissipated heat, although moisture content is aevtp to be reduced.

Typical examples include materiel containing explosives or seals and other components that need to be representatively stressed. Performance of surveillance materiel may be reduced by high humidity and by accumulations of moisture in optical systems.

The induced ambient temperature of the enclosed atmosphere will depend on the level of any ventilation or forced air cooling. Air Conditioned Compartments See Paragraph 2. It should be assumed that materiel fitted to, or carried on, external surfaces will be subjected to the ambient conditions associated with the geographical area of deployment.

aectp climatic conditions

We wish you a pleasant end-of-year holiday. Lowering of viscosity and reduced efficiency of lubricants. Preferably, test severities should be derived from specific measurements made on the intended enclosure during representative worst-case conditions expected in sectp. For externally carried stores in which packing densities of heat dissipating equipment are likely to be greater than that in aircraft compartments, final temperatures and rates of increase are likely to be in excess of those given above.

Immersion, precipitation and spray a. Clogging or seizure of mechanical devices. Changes in characteristics of materials used in manufacture of electronic components causing: Heat generated by engines and electrical power generators is likely to reduce levels of relative humidity, while condensation and steam in air conditioning plants, galleys and laundries are likely to elevate relative humidity.

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Warm, damp atmospheres in unventilated areas provide ideal conditions for promotion of corrosion, chemical attack eactp fungal growth. The walls of sealed or partially sealed containers with leakage rates lower than induced rates of change of pressure may suffer temporary or permanent distortion, which in turn may cause interference with contained components.

In the absence of specifically measured data, values for the latter should be assumed to represent worst-case induced conditions experienced by materiel during storage.

NATO-AECTP 230:2009

In the case of externally mounted materiel, the situation will be aetp by the indirect effects of solar heating. Prototyping and Production piccole serie.

Air Pressure Where it is required to simulate low air pressures experienced by materiel on vehicles, the relevant procedure of AECTP Method should be used. Petroleum and qectp technologies Preferably, conditions for particular applications should be determined from specifically measured data. Although heat dissipated by equipment while operating will help to reduce the relative humidity, heating and cooling associated with its aecyp cycle may also aggravate the situation.

Proximity to Refrigerated Units The Drag Test of Document D. Induced damp heat conditions e. Surfaces of externally deployed materiel are may be sprayed with other types of wetting agents such as de-icing fluids. Reference should be made to Operational and Environmental Requirement documents 4.

European Defence Agency – EDSTAR

Some materiel may be located in refrigerated areas or close to external hatches. Materiel transported in aircraft operating in hot-dry regions of the world may experience extremely low levels of humidity when subjected to the indirect effects of solar heating or when located close to sources of dissipated heat during ground running.

Air pressure See paragraph 2. Wetting Precipitation, spray, drip, splash, and immersion are factors contributing to induced levels of wetting caused by dripping condensation from overhead surfaces, fire awctp, fractured pipes, leaking joints, cleaning operations, and exposure to splashing or immersion directly from operations in or near open waters.

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To assist aevtp engineers to prepare Environmental Design Specifications by providing improved environmental characteristics data that will help them to select more valid initial design values. Road and rail transportation For materiel carried in covered and in enclosed vehicles, icing of materiel during transportation normally arises entirely from the prevailing meteorological conditions. It is preferred that test severities should be derived from specifically measured data including the influence of any form of conditioned or non-conditioned enclosure such as a temporary shelter.

Materiel on ships deployed above deck or in magazine areas may be required to survive, remain safe or continue to operate when subjected to blast from gunfire and motors of ship-launched weapons. Aircraft Impact with Super-cooled Water Droplets Induced-icing of externally carried stores may occur during the various stages adctp a flight sortie caused by impact with super-cooled water droplets e.

Increased burning rates of explosives and propellants. Depending on their locations on platforms, materiel items or components may experience wide-ranging direct or indirect induced temperatures in excess of outdoor ambient levels during transportation, storage, handling and use.

AECTP-230E(1)

Inside RCCP is present an electronic thermostat, allowing the adjustment of awctp temperature inside the compartment operators. Therefore equivalent or lower levels of RH may be assumed to occur inside nominally dry aircraft compartments or similar areas of individual materiel asctp to induced high temperatures. One of, the most severe conditions will occur when shipborne materiel is installed or carried above deck in hot regions of the world.

For those types of man mounted and portable materiel designed for tri-Service use and likely to be deployed on military aircraft, surface ships or submarines, reference should also be made to the appropriate leaflet of AECTP, for the relevant induced climatic, chemical and biological conditions.