\u5728 FMS \u51c6\u5907\u8fc7\u7a0b\u4e2d\uff0c INIT \u9875\u9762\u7684 TROPO \u6570\u636e\u662f\u53ef\u4ee5\u4fee\u6539\u7684\u3002\u4e00\u822c\u6765\u8bf4\u6211\u4eec\u53c2\u8003\u9ad8\u7a7a\u6c14\u8c61\u56fe\u6765\u8f93\u5165\u4e00\u4e2a\u66f4\u7cbe\u786e\u7684\u5bf9\u6d41\u5c42\u9876\uff0c\u4f46\u6709\u4e2a\u95ee\u9898\u662f\uff0c\u5982\u679c\u822a\u8def\u4e0a\u5bf9\u6d41\u5c42\u9876\u53d8\u5316\u8f83\u5927\uff0c\u6bd4\u5982\u4ece\u5317\u65b9\u7684 37000 \u5230\u5357\u65b9\u7684 53000\uff0c\u90a3\u5728\u5de1\u822a\u8fc7\u7a0b\u4e2d\u662f\u5426\u9700\u8981\u5b9e\u65f6\u8fdb\u884c\u4fee\u6539\u5462\uff1f<\/p>\n
\u7a7a\u5ba2\u7684\u56de\u590d\u662f\uff0c\u4e0d\u5f3a\u6c42\uff0c\u4f46\u53ef\u4ee5\uff1a<\/p>\n
\u8bf7\u6ce8\u610f\uff0c\u5728\u98de\u884c\u8fc7\u7a0b\u4e2d\u5e76\u6ca1\u6709\u5b9a\u671f\u66f4\u65b0\u5bf9\u6d41\u5c42\u9876\u9ad8\u5ea6\u503c\u7684\u8981\u6c42\u3002<\/em><\/p>\n \u5f53\u9884\u8ba1\u5bf9\u6d41\u5c42\u9876\u9ad8\u5ea6\u4f1a\u6709\u6240\u4e0d\u540c\u65f6\uff0c\u5efa\u8bae\u5728\u9a7e\u9a76\u8231\u51c6\u5907\u9636\u6bb5\u8f93\u5165\u98de\u884c\u7b2c\u4e00\u6bb5\u822a\u7a0b\u7684\u5bf9\u6d41\u5c42\u9876\u9ad8\u5ea6\u503c\u3002\u7136\u540e\uff0c\u5728\u98de\u884c\u8fc7\u7a0b\u4e2d\uff0c\u82e5\u80fd\u83b7\u53d6\u5230\u51c6\u786e\u7684\u76f8\u5173\u4fe1\u606f\uff0c\u98de\u884c\u673a\u7ec4\u53ef\u4ee5\u51b3\u5b9a\u66f4\u65b0\u5728\u9a7e\u9a76\u8231\u51c6\u5907\u9636\u6bb5\u6240\u8f93\u5165\u7684\u5bf9\u6d41\u5c42\u9876\u9ad8\u5ea6\u503c\u3002<\/em><\/p>\n <\/p>\n \u539f\u6587<\/strong><\/p>\n Q<\/strong><\/p>\n As required in PR-NP-SOP-60 A FMS PREPARATION – INIT, “In order to have accurate FMS predictions, the flight crew should update the CRZ TEMP and the TROPO values in accordance with the predicted values<\/span><\/span> at the top of climb, if the default values are different<\/span>.”<\/p>\n For flights that cover a relatively large range of latitudes, the change in the tropopause will also be relatively significant, such as from 37000 to 53000. Does the flight crew need to modify TROPO during cruising?<\/p>\n If needed, what is the recommended time interval of modification?<\/p>\n <\/p>\n A<\/strong><\/p>\n For A350 aircraft with FMS Standard S6, the flight crew can enter CRZ TEMP and TROPO values in FMS INIT page according to flight preparation.<\/p>\n The entry of the tropopause altitude is optional<\/span>. It is used by the FMGS to compute vertical temperature profile and predictions. A precise tropopause value entered improves the precision of the predicted data.<\/p>\n The tropopause altitude entered by the flight crew may have an effect depending on the flight phase considered: Please note that there is no requirement to update the tropopause<\/span>\u00a0value regularly in flight.<\/p>\n When a single tropopause value is available, it should be entered during cockpit preparation.<\/p>\n When different tropopause levels are expected<\/span>, it is recommended to enter the value of the tropopause for the first segment<\/span>\u00a0of flight during cockpit preparation. Then, during the flight, the flight crew can decide to update<\/span>\u00a0the tropopause value entered during cockpit preparation, when this information is available and accurate<\/span>.<\/p>\n","protected":false},"excerpt":{"rendered":" \u5728 FMS \u51c6\u5907\u8fc7\u7a0b\u4e2d\uff0c INIT \u9875\u9762\u7684 TROPO \u6570\u636e\u662f\u53ef\u4ee5\u4fee\u6539\u7684\u3002\u4e00\u822c\u6765\u8bf4\u6211\u4eec\u53c2\u8003\u9ad8\u7a7a\u6c14\u8c61\u56fe\u6765\u8f93\u5165\u4e00\u4e2a … \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-5007","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\/5007","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=5007"}],"version-history":[{"count":1,"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/posts\/5007\/revisions"}],"predecessor-version":[{"id":5009,"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/posts\/5007\/revisions\/5009"}],"wp:attachment":[{"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/media?parent=5007"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/categories?post=5007"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/tags?post=5007"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/ppma_author?post=5007"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n– During the climb phase, considering a tropopause different than the tropopause at TOC could lead to a fuel burn increment due to a modification of the climb speed profile.
\n– During the cruise, the FMS uses the tropopause value entered by the flight crew for the REC MAX FL, EFOB and ETA\/RTA computations.<\/p>\n