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Electrical and Electronic Equipment Cooling in Commercial Transports
- Aerospace Standard
- AIR64C
- Revised
Downloadable datasets available
Annotation ability available
Sector:
Issuing Committee:
Language:
English
Scope
This document considers the cooling of equipment installed in equipment centers, which usually consist of rack-mounted equipment and panel mounted equipment in the flight deck. Instances where these two locations result in different requirements are identified. This document generally refers to the cooled equipment as E/E equipment, denoting that both electrical and electronic equipment is considered, or as an E/E equipment line-replaceable-unit (LRU). The majority of cooled equipment takes the form of LRUs. The primary focus of this document is E/E equipment which uses forced air cooling to keep the equipment within acceptable environmental limits. These limits ensure the equipment operates reliably and within acceptable tolerances. Cooling may be supplied internally or externally to the E/E equipment case. Some E/E equipment is cooled solely by natural convection, conduction, and radiation to the surrounding environment.
This document discusses specification requirements, system design considerations, component design, and system testing. It also discusses the analysis and test considerations for the thermal design of the avionic equipment. The discussion of supplementary cooling systems includes consideration of a refrigeration system.
This document just covers air cooling of equipment. AIR1811 should be consulted for information on liquid cooling of equipment.
Although this document is targeted at transport category airplanes, most of the material applies to other classes of aircraft with possible adaptions.
Rationale
This document is being revised to update references and formatting to the latest style manual and includes other minor changes.
Recommended Content
| Aerospace Standard | FITTING, TEE, STANDARD AND REDUCER, BULKHEAD ON RUN, INTERNAL PORT ON SIDE, FLARELESS, PRECISION TYPE |
| Aerospace Standard | FLANGE, SHEET METAL, WIDE |
| Aerospace Standard | NUT, SELF-LOCKING, SHANK, UNS S66286 SILVER PLATE ON THREAD ONLY, UNJ THREAD |
Topic
Data Sets - Support Documents
| Title | Description | Download |
|---|---|---|
| Unnamed Dataset 1 | ||
| Unnamed Dataset 2 | ||
| Unnamed Dataset 3 | ||
| Unnamed Dataset 4 | ||
| Table 1 | Heat load allocation guide |
Issuing Committee
AC-9 Aircraft Environmental Systems Committee
Furthers the advancement of technology related to the research, design, test and utilization of aircraft environmental and anti-icing/deicing systems. Develops and updates standards, recommended practices, and information reports contributing to the quality, economy, and safety of commercial and military aircraft.
Reference
| Number | Title |
|---|---|
| AIR1812 | ENVIRONMENTAL CONTROL SYSTEMS LIFE CYCLE COST |
| AIR851 | O-RING TENSION TESTING CALCULATIONS |
| ARINC 404A | This document is not part of the subscrption. |
| ARINC 408A | This document is not part of the subscrption. |
| ARINC 600 | This document is not part of the subscrption. |
| ARINC 601 | This document is not part of the subscrption. |
| ARINC 728 | This document is not part of the subscrption. |
| ARP987 | THE CONTROL OF EXCESS HUMIDITY IN AVIONICS COOLING |
| ASHRAE STANDARD 52 | This document is not part of the subscrption. |
| RTCA/DO-160C | This document is not part of the subscrption. |
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