{"id":7514,"date":"2024-02-29T07:29:16","date_gmt":"2024-02-28T23:29:16","guid":{"rendered":"https:\/\/tommykwan.com\/blog\/?p=7514"},"modified":"2024-05-19T16:42:14","modified_gmt":"2024-05-19T08:42:14","slug":"pilot-math","status":"publish","type":"post","link":"https:\/\/tommykwan.com\/blog\/aviation\/pilot-math\/","title":{"rendered":"Pilot math"},"content":{"rendered":"\r\n

\u8a08\u6578\u4fc2\u60e1\u5922 \u4f46\u65b9\u6cd5\u9084\u662f\u6709 \ud83e\udd2d<\/p>\r\n

Ref skybrary:<\/p>\r\n

https:\/\/skybrary.aero\/articles\/rules-thumb<\/a><\/p>\r\n

 <\/p>\r\n\r\n\r\n\r\n

\u6642\u9593 Time <\/strong><\/p>\r\n\r\n\r\n\r\n

6 mins 0.1 hour<\/p>\r\n\r\n\r\n\r\n

3 mins 0.05 hour<\/p>\r\n\r\n\r\n\r\n

 <\/p>\r\n\r\n\r\n\r\n

\u65b9\u4f4d <\/strong><\/p>\r\n\r\n\r\n\r\n

Reciprocal Heading<\/p>\r\n\r\n\r\n\r\n

= HDG +200 – 20<\/p>\r\n\r\n\r\n\r\n

or<\/p>\r\n\r\n\r\n\r\n

= HDG – 200 + 20<\/p>\r\n\r\n\r\n\r\n

\u5927\u904e200\u5c31- \u5148 \uff1b \u7d30\u904e200\u5c31+ \u5148<\/p>\r\n\r\n\r\n\r\n

e.g 090 : 90 + 200 – 20 = 270<\/p>\r\n\r\n\r\n\r\n

270 : 270 – 200 + 20 = 090<\/p>\r\n\r\n\r\n\r\n

 <\/p>\r\n\r\n\r\n\r\n

\u6eab\u5ea6<\/strong><\/p>\r\n\r\n\r\n\r\n

F = (9\/5)C + 32<\/p>\r\n\r\n\r\n\r\n

 <\/p>\r\n\r\n\r\n\r\n

Standard Temperature lapse rate<\/strong><\/p>\r\n\r\n\r\n\r\n

Every 1000 feet decrease 2 C , up to 38000 feet MSL<\/p>\r\n\r\n\r\n\r\n

 <\/p>\r\n\r\n\r\n\r\n

ISA Temp<\/strong><\/p>\r\n\r\n\r\n\r\n

15 – (feet \/ 1000)* 2<\/p>\r\n\r\n\r\n\r\n

 <\/p>\r\n\r\n\r\n\r\n

Temperature deviation = Actual – ISA temp<\/strong><\/p>\r\n\r\n\r\n\r\n

 <\/p>\r\n\r\n\r\n\r\n

e.g OAT = 20 C @ 5000 feet , calc Temp Deviation<\/p>\r\n\r\n\r\n\r\n

ISA Temp @ 5000 feet MSL = 15- (5000\/1000 )* 2 = 15 – 10 = 5<\/p>\r\n\r\n\r\n\r\n

Temp Dev = Actual – ISA = 20 – 5 = + 15 C<\/p>\r\n","protected":false},"excerpt":{"rendered":"

\u8a08\u6578\u4fc2\u60e1\u5922 \u4f46\u65b9\u6cd5\u9084\u662f\u6709 \ud83e\udd2d Ref skybrary: https:\/\/skybrary.aero\/articles\/rules-thumb   \u6642\u9593 Time 6 mins 0.1 hour 3 mins 0.05 hour   \u65b9\u4f4d Reciprocal Heading = HDG +200 – 20 or = HDG – 200 + 20 \u5927\u904e200\u5c31- \u5148 \uff1b \u7d30\u904e200\u5c31+ \u5148 e.g 090 : 90 + 200 – 20 = 270 270 : 270 – 200 + 20 Read More<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[64,65],"tags":[],"class_list":["post-7514","post","type-post","status-publish","format-standard","hentry","category-aviation","category-bak"],"_links":{"self":[{"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/posts\/7514","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/comments?post=7514"}],"version-history":[{"count":5,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/posts\/7514\/revisions"}],"predecessor-version":[{"id":7845,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/posts\/7514\/revisions\/7845"}],"wp:attachment":[{"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/media?parent=7514"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/categories?post=7514"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/tags?post=7514"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}