{"id":3582,"date":"2020-08-05T21:59:14","date_gmt":"2020-08-05T13:59:14","guid":{"rendered":"http:\/\/caucanimax.com\/blog\/?p=3582"},"modified":"2020-08-05T22:59:16","modified_gmt":"2020-08-05T14:59:16","slug":"a350-air-system-cpiom-related-ecam-alerts","status":"publish","type":"post","link":"https:\/\/caucanimax.com\/blog\/a350-air-system-cpiom-related-ecam-alerts\/","title":{"rendered":"A350 \u7a7a\u8c03\u7cfb\u7edf\u4e0e CPIOM \u8f6f\u4ef6\u6545\u969c\u76f8\u5173\u7684\u51e0\u4e2a ECAM \u8b66\u544a"},"content":{"rendered":"

\"\"<\/a><\/p>\n

\u80cc\u666f\u77e5\u8bc6\uff1a<\/strong><\/p>\n

A350\u91c7\u7528\u4e86\u5168\u65b0\u7684\u822a\u7535\u7cfb\u7edf\u8bbe\u8ba1\uff1aIntegrated Modular Avionics (IMA). IMA \u548c\u4f20\u7edf\u822a\u7535\u7684\u533a\u522b\u5c31\u50cf\u662f\u51af\u8bfa\u4f9d\u66fc\u7ed3\u6784\u548c\u4e4b\u524d\u7684\u8ba1\u7b97\u673a\u7ed3\u6784\u4e4b\u95f4\u7684\u533a\u522b\u3002\u4f20\u7edf\u822a\u7535\u67d0\u4e2a\u786c\u4ef6\u5c31\u5bf9\u5e94\u67d0\u4e2a\u529f\u80fd\uff0c\u4ece\u5927\u5c0f\u3001\u5185\u90e8\u7ed3\u6784\u3001I\/O \u7b49\u8bbe\u8ba1\u4e0a\u53ef\u80fd\u90fd\u5b8c\u5168\u4e0d\u540c\uff0c\u822a\u7535\u4e4b\u95f4\u4e5f\u53ea\u80fd\u9760\u7535\u7f06\u8fde\u63a5\uff0c\u800c\u4e14\u7535\u7f06\u7684\u89c4\u683c\u53ef\u80fd\u90fd\u4e0d\u540c\u3002<\/p>\n

IMA\u6a21\u5757\u5305\u62ec The Core Processing Input\/Output Modules (CPIOMs) \u548c The Common Remote Data Concentrators (CRDCs)
\nCPIOM \u76f8\u5f53\u4e8e\u7edf\u4e00\u786c\u4ef6\u89c4\u683c\uff0c\u7edf\u4e00\u8f93\u5165\/\u8f93\u51fa\uff08I\/O\uff09\u63a5\u53e3\u7684\u901a\u7528\u8ba1\u7b97\u673a\uff0c\u4e0d\u540c\u7684\u822a\u7535\u53ea\u662f\u88c5\u5728\u4e0a\u9762\u7684\u8f6f\u4ef6\u3002\u5982\u679c\u4e00\u4e2a\u7cfb\u7edf\u7684\u8f6f\u4ef6\u6bd4\u8f83\u590d\u6742\uff0c\u5360\u7528\u8d44\u6e90\u8f83\u591a\uff0c\u90a3\u53ef\u80fd\u5c31\u4e00\u4e2a\u8f6f\u4ef6\u7528\u4e00\u6574\u4e2aCPIOM\uff0c\u5982\u679c\u8f6f\u4ef6\u6bd4\u8f83\u7b80\u5355\uff0c\u53ef\u80fd\u5c31\u51e0\u4e2a\u8f6f\u4ef6\u4e00\u8d77\u88c5\u5728\u4e00\u4e2aCPIOM\u4e0a\u3002\u56e0\u4e3a\u662f\u7edf\u4e00\u914d\u7f6e\u548c I\/O\uff0cCPIOM\u4e4b\u95f4\u7684\u901a\u8baf\u4e5f\u53ef\u4ee5\u7edf\u4e00\u89c4\u683c\uff0c\u975e\u5e38\u65b9\u4fbf\u5b9e\u73b0 AFDX \u9ad8\u901f\u6570\u636e\u7f51\u7edc\u3002<\/p>\n

<\/p>\n

\"\"<\/a> \"\"<\/a><\/p>\n

\u5982\u4e0a\u9762\u8fd9\u4e9b\u56fe\u6240\u793a\uff0cCPIOM\u5c31\u662f\u7535\u8111\uff0c\u4e00\u4e2aCPIOM\u53ef\u4ee5\u88c5\u591a\u4e2a\u7cfb\u7edf\u7684\u822a\u7535\u7cfb\u7edf\u8f6f\u4ef6\uff0c\u540c\u6837\u7684\u8f6f\u4ef6\u4e5f\u53ef\u4ee5\u88c5\u5728\u4e0d\u540c\u7684CPIOM\u4e2d\uff0c\u4f5c\u4e3a\u5197\u4f59\u3002CPIOM \u6709\u4e24\u7c7b\uff0cH \u548c J\uff0cH \u7c7b\u67093\u7ec4\uff0cJ\u7c7b\u67094\u7ec4\uff0c\u4e00\u51717\u7ec4\u3002\u6bcf\u4e00\u7ec4\u6709\u4e00\u4e2a\u6216\u591a\u4e2aCPIOM\uff0c\u8d1f\u8d23\u4e00\u4e2a\u6216\u591a\u4e2a\u98de\u673a\u7cfb\u7edf\u7684\u822a\u7535\u3002<\/p>\n

\"\"<\/a><\/p>\n

 <\/p>\n

\u51e0\u4e2a\u8b66\u544a\uff1a<\/strong><\/p>\n

\u5f88\u591a\u7cfb\u7edf\u6709\u672c\u5730\u63a7\u5236\u5668\uff0c\u5373\u786c\u4ef6\u81ea\u5e26\u7684\u63a7\u5236\u5668\uff0c\u53e6\u5916\u8fd8\u6709\u5728 CPIOM \u4e0a\u7684\u63a7\u5236\u8f6f\u4ef6\uff08applications\uff09\u3002\u4e00\u822c\u6765\u8bf4\uff0c\u672c\u5730\u63a7\u5236\u5668\u7528\u4e8e\u57fa\u7840\u529f\u80fd\uff0c\u63a7\u5236\u8f6f\u4ef6\u7528\u4e8e\u9ad8\u7ea7\u529f\u80fd\u3002\u5982\u679c\u63a7\u5236\u8f6f\u4ef6\u6545\u969c\u4e86\uff0c\u6216\u8005\u6240\u5728\u7684 CPIOM \u6545\u969c\u4e86\uff0c\u7cfb\u7edf\u7684\u57fa\u672c\u529f\u80fd\u4ecd\u7136\u53ef\u4ee5\u5de5\u4f5c\u3002<\/p>\n

\u4f46\u5728\u4e0d\u6b63\u5e38\u7a0b\u5e8f\u4e2d\uff0c\u7531\u4e8e\u547d\u540d\u548c\u63cf\u8ff0\u539f\u56e0\uff0c\u6709\u7684\u5730\u65b9\u5f88\u96be\u5206\u8fa8\u51fa\u5230\u5e95\u662f\u672c\u5730\u63a7\u5236\u5668\u8fd8\u662f CPIOM \u8f6f\u4ef6\u6545\u969c\u3002\u4e0b\u9762\u4ee5\u7a7a\u8c03\/\u589e\u538b\/\u901a\u98ce\u7cfb\u7edf\u4e2d\u7684\u4f8b\u5b50\u6765\u8bf4\u660e\u3002<\/p>\n

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1 AIR ENG 1(2) BLEED MONITORING + CTL FAULT \u4e0e AIR ENG 1(2) BLEED FAULT \u7684\u533a\u522b<\/strong><\/p>\n

\u5b89\u88c5\u5728 H43 \u548c H44 \u4e0a\u7684 Bleed Air System (EBAS) \u5982\u679c\u6545\u969c\u4e86\uff0c\u76f8\u5e94\u53d1\u52a8\u673a\u5f15\u6c14\u4e00\u4e9b\u9ad8\u7ea7\u529f\u80fd\uff0c\u6bd4\u5982\u76d1\u63a7\u3001\u9694\u79bb\u3002\u4f46\u5f15\u6c14\u4ecd\u7136\u53ef\u4ee5\u4ee5\u964d\u7ea7\u6a21\u5f0f\u5de5\u4f5c\uff0c\u538b\u529b\u63a7\u5236\u53d8\u6210\u6c14\u52a8\u6a21\u5f0f\u3002<\/p>\n

\"\"<\/a><\/p>\n

\u800c AIR ENG 1(2) BLEED FAULT<\/strong> \u5219\u662f\u7531\u4e8e\u8d85\u6e29\u3001\u8d85\u538b\u3001\u4f4e\u538b\u3001\u7cfb\u7edf\u63a7\u5236\u6545\u969c\u3001\u5931\u53bb\u9006\u6d41\u4fdd\u62a4\u7b49\u539f\u56e0\u4f1a\u5bfc\u81f4\u5931\u53bb\u53d1\u52a8\u673a\u5f15\u6c14\u3002\u53d1\u52a8\u673a\u5f15\u6c14\u4f1a\u81ea\u52a8\u5173\u95ed\uff0c\u5982\u679c\u6ca1\u6709\u5173\uff0cECAM \u7a0b\u5e8f\u5219\u8981\u6c42\u673a\u7ec4\u5173\u95ed\u3002\u8fd9\u4e2a\u5c31\u4e0d\u662f CPIOM \u8f6f\u4ef6\u95ee\u9898\u4e86\u3002<\/p>\n

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2 COND TEMP CTL FAULT \u4e0e\u7a7a\u8c03\u7cfb\u7edf\u7ae0\u8282\u63d0\u5230\u7684 pack controller \u4e0d\u662f\u4e00\u4e2a\u4e1c\u897f<\/strong><\/p>\n

\u8fd9\u4e2a\u8b66\u544a\u7684\u4e0d\u5de5\u4f5c\u7cfb\u7edf\u4e2d\u63d0\u5230\u4e24\u90e8 pack controller \u6545\u969c\u65f6\uff0c\u4e24\u90e8 PACK \u53ea\u80fd\u63d0\u4f9b\u56fa\u5b9a\u6e29\u5ea6\u3002\u800c\u5728\u7cfb\u7edf\u7ae0\u8282\u63cf\u8ff0\u4e2d\uff0c\u53c8\u63d0\u5230\u5982\u679c pack controller \u6545\u969c\uff0c\u76f8\u5173 PACK \u5c31\u5931\u53bb\u4e86\u3002<\/p>\n

\"\"<\/a> \"\"<\/a><\/p>\n

\u7a7a\u5ba2\u5728\u56de\u590d\u4e2d\u89e3\u91ca\u8bf4\u7cfb\u7edf\u7ae0\u8282\u63d0\u5230\u7684 pack controller \u662f\u672c\u5730\u63a7\u5236\u5668\uff0c\u79f0\u4e3a Air System Control Unit (ASCU)\u3002 \u800c COND TEMP CTL FAULT \u8b66\u544a\u4e2d\u7684 pack controller \u662f\u6307 CPIOIM H41 \u548c H42 \u4e0a\u5b89\u88c5\u7684 Air Conditioning System\uff08ACS\uff09\u8f6f\u4ef6\u3002ACS \u80fd\u63d0\u4f9b\u4f18\u5316\u5730\u6e29\u5ea6\u63a7\u5236\uff0c\u800c ASCU \u5219\u8d1f\u8d23\u57fa\u672c\u529f\u80fd\u3002\u81f3\u4e8e\u90fd\u53eb pack controller\uff0c\u7a7a\u5ba2\u8bf4\u201chowever, as both the ASCU and ACS are both pack controllers, we currently have no plans to revise the content.\u201d\u6211\u89c9\u5f97\u8fd9\u5f88\u6577\u884d\uff0c\u81f3\u5c11\u53ef\u4ee5\u52a0\u4e2a\u62ec\u53f7\u6807\u6ce8\u4e00\u4e0b\u5427\u3002<\/p>\n

\"\"<\/a><\/p>\n

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3 COND VENT CTL DEGRADED \u4e5f\u53ea\u662f CPIOM \u4e2d\u7684\u8f6f\u4ef6\u6545\u969c<\/strong><\/p>\n

Ventilation control system (VCS) \u662f\u5728 CPIOM H4 \u4e0a\u7684\u8f6f\u4ef6\uff0c\u6240\u4ee5\u5c31\u7b97\u6545\u969c\u4e5f\u4e0d\u662f\u5f7b\u5e95\u5931\u53bb\u901a\u98ce\u529f\u80fd\uff0c\u800c\u53ea\u662f DEGRADED\uff0c\u5931\u53bb\u4e00\u4e9b\u9ad8\u7ea7\u529f\u80fd\uff0c\u6bd4\u5982 Air Management, Cabin Air Recirculation, Compartment Air Extraction, Commercial Equipment Ventilation, Cabin Crew Rest Compartment ventilation and all monitoring.<\/p>\n

\"\"<\/a> \"\"<\/a><\/p>\n

\n

 <\/p>\n

\u4ee5\u4e0b\u662f\u76f8\u5173 TechRequest \u539f\u6587\uff0c\u6587\u4e2d\u56fe\u7247\u5c31\u4e0d\u91cd\u590d\u8d34\u51fa\u4e86\uff0c\u53ef\u4ee5\u53c2\u8003\u4e0a\u6587\uff1a<\/p>\n

Q: AIR ENG 1(2) BLEED MONITORING + CTL FAULT<\/strong>
\n“The monitoring and the control of the engine 1(2) bleed air system is failed due to the failure of both EBAS control channels of the affected side.”
\n“The monitoring capability and the isolation capability of the engine bleed air system are lost on the affected side. The temperature regulation is degraded.”<\/p>\n

What is the EBAS control channel? There’s no description on DSC section. However it only need crew awareness. Is both EBAS control channels failure equal to Bleed air system control failure? If yes, what’s the difference between AIR ENG 1(2) BLEED MONITORING + CTL FAULT and AIR ENG 1(2) BLEED FAULT? And is “crew awareness” means this problem affect a little or there’ll be other detail alerts?<\/p>\n

A:<\/strong>
\nAirbus has carefully reviewed your query and we would like to provide you with the following information:<\/p>\n

The Engine Bleed Air System (EBAS) supplies high-pressure air to the different systems in the aircraft.<\/p>\n

The EBAS control channel helps control and monitor the bleed air system. One control channel is hosted in the CPIOM H43 or H44 and CRDC B05 or B02 and the other control channel is hosted in the associated Bleed and Overheat Monitoring Units (BOMUs). Refer to CSC A350 FCOM Aircraft Systems\/36-Bleed Air\/Overview.<\/p>\n

When both EBAS control channels fail, the monitoring capability and the isolation capability of the engine bleed air system are lost on the affected side. This will cause the AIR ENG 1(2) BLEED FAULT also. However, these two ECAM alerts are not exactly the same as the AIR ENG 1(2) BLEED FAULT could be caused by other failures too. Refer to AIR ENG 1(2) BLEED FAULT.<\/p>\n

As there is no actions to be completed in flight, the ECAM alert AIR ENG 1(2) BLEED MONITORING + CTL FAULT only requires \u201cCrew Awareness\u201d.<\/p>\n

Q_2:<\/strong>
\nSo when both control channels fail, AIR ENG 1(2) BLEED MONITORING + CTL FAULT & AIR ENG 1(2) BLEED FAULT both will be triggered. That seems AIR ENG 1(2) BLEED MONITORING is just like a additional reminder. Be it so, why not set it as a subtitle of AIR ENG 1(2) BLEED FAULT?<\/p>\n

A_2:<\/strong>
\nPlease disregard our answer to Q1 in TechRequest 80763456\/003.<\/p>\n

First of all, we confirm that when AIR ENG 1(2) BLEED MONITORING + CTL FAULT triggers the AIR ENG 1(2) BLEED FAULT does no trigger the AIR ENG 1(2) BLEED FAULT.<\/p>\n

When the EBAS control channel fails the monitoring capability and the isolation capability of the engine bleed air system are lost on the affected side but the bleed is still available. In degraded mode, the pressure control is in pneumatic mode. This means that the HP valve operates in pneumatic mode and regulates the downstream bleed pressure but the bleed is still available.<\/p>\n

The main difference is that with AIR ENG 1(2) BLEED FAULT there will be no bleed air from the affected side. However, for AIR ENG 1(2) BLEED MONITORING + CTL FAULT the monitoring and isolation capability is failed but the bleed can still be provided in pneumatic control pressure mode.<\/p>\n

 <\/p>\n

Q: COND TEMP CTL FAULT<\/strong>
\nThe situation after pack controller failure is incionsistent with description of DSC section. Does “pack is lost” means totally fail?<\/p>\n

A:<\/strong>
\nThe packs are controlled by two local controllers called Air System Control Unit (ASCU). The interface to other aircraft systems is realized via a Gateway through the CPIOMs. So, the sentence “pack controller fails” in FCOM PACKS system description is linked to the ASCU. If an ASCU Fails, the associated pack is lost. In case both CPIOMs are lost (“all ACS applications”), the ASCUs do not receive information from other aircraft systems, but the packs remain operative (in a backup mode).<\/p>\n

Q_2:<\/strong>
\nAccording to your explanation, “If both pack controllers are fialed” in procedure meas CPIOMS failure insdead of ASCU failure. I think it’s a bit confusing to crew. Can it be described more precise?<\/p>\n

A_2:<\/strong>
\nWe would like to clarify that the ASCUs and their related CPIOM ACS applications control and monitor the packs. As the condition in the ECAM alert refers to the failure of the ACS applications part of the pack controller, the temperature control (PACKS 1+2 operate at FIXED TEMP) is lost but the packs remain operative. In the Aircraft Systems\/21 \u2013 Air Conditioning\/Air Condition Generation\/Packs the sentence \u201cIn the event a pack controller fails, the associated pack is lost.\u201d is the ASCU part that controls the pack. If the ASCU fails, the packs will be lost. We understand CSCs concern, however, as both the ASCU and ACS are both pack controllers, we currently have no plans to revise the content.<\/p>\n

 <\/p>\n

Q: COND VENT CTL DEGRADED<\/strong>
\nThe triggering conditions: Both ventilation control systems are lost. Why does loss of both control systems only result CTL DEGRADED instead of FAULT?<\/p>\n

A:<\/strong>
\nThe ECAM alert COND VENT CTL DEGRADED is triggered if both CPIOMs, which are hosting the Ventilation Control System (VCS) application, are not operational or faulty OR both VCS applications have failed.<\/p>\n

In this case the avionics ventilation, which is the most important function of the VCS, remains available in the default configuration. This is because no VCS software is needed to operate the avionics ventilation in the default configuration.<\/p>\n

However, the function of the VCS is considered as DEGRADED because of a loss of Air Management, Cabin Air Recirculation, Compartment Air Extraction, Commercial Equipment Ventilation, Cabin Crew Rest Compartment ventilation and all monitoring. Apart from that, FWS and CDS indication is no longer available.<\/p>\n","protected":false},"excerpt":{"rendered":"

\u80cc\u666f\u77e5\u8bc6\uff1a A350\u91c7\u7528\u4e86\u5168\u65b0\u7684\u822a\u7535\u7cfb\u7edf\u8bbe\u8ba1\uff1aIntegrated Modular Avionics (IMA … \u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[113],"tags":[],"ppma_author":[5],"class_list":["post-3582","post","type-post","status-publish","format-standard","hentry","category-fly"],"authors":[{"term_id":5,"user_id":2,"is_guest":0,"slug":"yaoguai","display_name":"\u5996\u602a","avatar_url":"https:\/\/secure.gravatar.com\/avatar\/dfe71d09a1a83f49a02a4400c69ef2c361c2d967eae2ffeeb6318b73a0da763f?s=96&r=g","0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""}],"_links":{"self":[{"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/posts\/3582","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/comments?post=3582"}],"version-history":[{"count":4,"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/posts\/3582\/revisions"}],"predecessor-version":[{"id":3603,"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/posts\/3582\/revisions\/3603"}],"wp:attachment":[{"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/media?parent=3582"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/categories?post=3582"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/tags?post=3582"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/ppma_author?post=3582"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}