Dew Point Application – Calculate Cloud Base

Degree C Let’s say the temperature is 25°C and the dew point is 15°C. Convergence Rate (CR) = 2.5°C Temperature Dew Point Spread (TDS) = T-DP = 25 – 15 = 10°C TDS ÷ CR = 10 / 2.5 = 4 Multiply by 1000 = 4 * 1000 = 4000 feet Therefore, the estimated cloud Read More

Dew point, Dew Point Spread

What’s Dew Point? Dew point, given in degrees, is the temperature at which the air can hold no more moisture. When the temperature of the air is reduced to the dew point, the air is completely saturated and moisture begins to condense out of the air in the form of fog, dew, frost, clouds, rain, Read More

Latent Heat

https://youtu.be/EZxvY09V7ak?si=9HOYxwKOyXTwLSMR   Read More

ISA Deviation

Example: FL290 ; OAT -47 degree C ISA standard = 15 – (feet /1000) * 2 ISA Deviation = OAT – ISA standard FL 290 : 29,000 feet, so ISA standard @ FL 290 = 15- (29*2) = -43 degree C ISA deviation = -47 – -(43)  = ISA-4 degree C   https://youtu.be/_oWqu12Dm6M?si=eUYvJoTQD_EOKKl2 Read More

Thermodynamics: Radiation, Conduction, Convection & Advection

https://youtu.be/0vdxlgRKx1k?si=a80FzWfEp2fsKj2K     What’s Solar insolation?   Read More

Tropopause

  What’s Tropopause? https://youtu.be/jTCWSjhhXgc?si=9Zf8eVJgx6TKOXDs   Tropopause height and its significance? https://youtu.be/ZfGVHCJSDsw?si=qaqwuN4DSlX6uyiu     https://youtu.be/dRI5gYrJmvo?si=NHQo3NtST_5f-9ei     More Reference: https://code7700.com/tropopause.htm     Read More

What’s greenhouse effect?

https://youtu.be/SN5-DnOHQmE Read More

Next step: to become a cadet with CX!

2025 07 17應該係2017左右 HKAA IAC 有個機管局既前輩話我知咩叫code of practice, 由睇下睇下到讀航空管理文憑聽過下SMS, Risk Identification, Risk Assessment and Evaluation, ALAP, PPE2018 正式加盟KMB做Captain 實踐 Safety in every journey 2019 一個疫情打亂曬我部署 到 2025 好開心 城巴終於比機會我攞到 OSH既 “ATPL” 未知將來如何 但好多謝沿路一直幫我 教我既人 短期目標 part time 白車車長中期目標 Aviation ATPL長期目標 吾洗問牙貴 努力…家下無咩藉口比自己喇 係時候讀返書 報名 心動不如行動 再來一個穩打穩紮既突破 🫶🏻🛫 Tommy K | BC (Class 17) | RSO Read More

Spiral Dive v.s Spin v.s Dutch Roll

好耐無溫書…係時候準備! 今日朋友講起呢兩個TOPIC…就睇下啦~ XDDD Spin Stall -> Spin (autorotation) BOTH wing stall, but one wing stall more -> i.e uncoordinated stall / imbalanced stall 3 Phases (2 mins 36 sec) Incipient Spin Fully developed Recovery Feature slow airspeed at fully developed stage + high AOA Factors affecting spin recovery Weight & Balance -> CG aft, more Read More

到底搭棚洗吾洗入紙BD (屋宇署)?

呢個問題其實根本已經同職安健無關…某程度上關我鬼事… 不過之前有個前輩教落…佢教我睇棚架人牌方面要睇埋有無T1 … 今晚就再溫故知新睇下書同文章啦~   CIC 下面本野係有提到要T1 https://www.cic.hk/files/page/51/%E5%BB%BA%E9%80%A0%E6%A5%AD%E6%A3%9A%E6%9E%B6%E5%AE%89%E5%85%A8%E6%A8%99%E6%BA%96%E5%8F%8A%E5%AE%88%E5%89%87%20(2024%E5%B9%B46%E6%9C%88).pdf   再查埋BD個網: https://www.bd.gov.hk/tc/building-works/minor-works/minor-works-items/index_mwcs_items_c2a.html 重申…只學OSH就關你咩事…但想知多D…原來BD野又真係有講…所以基本上做安全佬知埋BD野…呢個前輩堅係有D料…     Read More

到底安全帶可以用幾耐或儲存幾耐?

今日返工另一個比較有趣既對話/話題就係: 「安全帶買左返黎可以貯存幾耐?」 其實好簡單…問返廠商,如何佢官網有就好。不過好多時候佢地都會補句: 在正常情況之下…係…正常情況 XD 反正…用果個有問題都有責任自己出聲…同埋 「PPE係您最後防線」用左吾包吾洗死 XD 舉過實例啦,當年我就用呢間廠:   Tag: Life Span lifespan shelf life Read More

棚架工作安全 (狗臂架式棚架/狗臂架)

好耐無打日記…打篇野記錄下生活啦…嘩嘩嘩…最近既喜又驚…由飛「國際航線」變左飛「國內短線」短短一年又4個人變到得返2個人…喜既係呢個新大老吾似紙上談兵既人…感覺到跟住佢一定學到野…所以幾開心…驚既係真係再無曬D前輩幫我頂…不過都好…係時候溫故知新…用經驗加努力行埋呢段路…before I go to CX !!! 廢話少打…今日要做既功課題目是狗臂架!   CIC 出左本野…提到PMSA有相關工作指引: PPT版: https://www.cic.hk/files/past_event/649/搭拆懸空式棚架施工流程安全簡介_20250213.pdf   加強懸空式竹棚架安全及通報事宜安排指引 https://www.cic.hk/files/page/50/Guidelines%20Enhancement%20Bamboo%20(Chi).pdf 重點: 棚架設計圖有專業工程師CERT 事前按指引向勞工處通報 核對人員資格 https://www.pmsa.org.hk/file/2712/懸空式竹棚架「搭、拆、改」工作前檢查表.pdf 圍封工作區 用儀器協助正確安裝狗臂架 (過去好多意外就係裝狗臂架都裝吾好!!!) CP on-site anytime!!! (+ CP 不可直接參與工作, only supervise)   Remark: “專業工程師” 是指結構或土木工程範疇的工程師。他必須是香港工程師學會會章下的法定會員或具備同等資格,必須有足夠的訓練和經驗,並且能夠按認可的工程原理,判斷他設計的棚架如何及因何能安全地承受所載的負荷。[ref 竹棚架工作安全守則 2. 釋義]   CIC 高級懸空式棚架安全訓練 有關連牆器的縱行距離的要求 連牆器的縱行距離不應大於3米。連牆器應由金屬繫件和連牆撐(例如頂竹)組成。金屬繫件應使用最小6毫米直徑、最少可伸長15%及抵禦強度為每平方毫米250牛頓(250N/mm2)的軟鋼條,或能抵禦相同拉力及具備相同機械性能的一捆鋼線或其他裝置(例如金屬托架),並繫穩在結構構件中。 [ref 懸空式竹棚架構造及工作安全指南]   有關繫穩螺絲數量及兩個相鄰金屬托架的橫向距離的要求 每個支撐懸空式竹棚架的金屬托架必須裝上3顆或以上的繫穩螺絲,而兩個相鄰金屬托架的橫向距離不應超逾1.3米,以確保懸空式竹棚架的承重力和穩定性。 [ref 懸空式竹棚架構造及工作安全指南]   有關繫穩螺絲抗拉力的要求 「拉爆」或「撞爆」螺絲的抗拉力應大於7千牛頓(7kN)。   有關惡劣天氣的安排 Read More

Air India crash : comment and discussion by Firstpost

https://youtu.be/dKeSj46pzng?si=X9U1pcfLMhu-jD4T d英文都幾易聽 內容都充實 對事情做個初步評估推論外 又有提到一班機pf 同 pm 既分別、 CVR 同 FDR 既分別 值得bookmark Read More

Forward CG or Rearward CG?

好耐無溫書,曾經作為load control,一定會比人問同埋要考慮load頭定load尾好,by rule of thumb, 我果陣普遍幫佢裝頭,點解? 係時候溫返書~ 一齊睇下AI分析先: Forward CG:  https://youtu.be/a_33vmrV52s?si=WwrMtjkikczUpT3e Aft CG:  In Summary: While a forward CG might be considered safer due to increased stability, pilots must balance this with the potential for increased drag and stall speed. Understanding the effects of both forward and aft CGs is crucial for safe and efficient flight Read More

意大利酒第一課 : valpolicella 🇮🇹

https://youtu.be/dqMykOaoZv4?si=eIxFJmmye9N8xhkr https://youtu.be/KVXbL0jktwo https://youtu.be/IetHodoYws8 https://youtu.be/CQkJ7JwevzI https://youtu.be/UBb0URZOcvs Read More

What’s Punt 酒底既凹位

引用文章: https://lytle-barnett.com/blog/PRODUCTION/The-Anatomy-of-Lytle-Barnett-Sparkling-Wine-Bottles Our sparkling wine is made in the French tradition, and we use bottles that mirror those used for Champagne. Today we will be breaking down the specific architecture of these bottles, starting from the top! CAPS – A metal cap is incorporated in our design and sits on the muselet which shows the Lytle-Barnett Read More

點樣先知我支 Billecart Salmon 既出廠年份?

https://www.thedrinksbusiness.com/2023/04/champagne-billecart-salmon-introduces-id-code-for-greater-transparency/ Read More

點樣check 我支南非酒是否真野? Check genuine?

https://www.sawis.co.za/sealsearch.php Read More

Champagne Vintage Years

Ref: https://www.jancisrobinson.com/learn/vintages/champagne https://www.winespectator.com/vintage-charts/region/champagne https://www.winescholarguild.com/vintage-charts/french-wine-vintage-chart/champagne-vintage-chart Read More

法國 Chateau 正牌同副牌點樣分?

引用: https://www.winecouple.hk/pages/second-label   Key points about Chateau : 法文 Chateau 直接就解作城堡 Chateau 間接代表Bordeaux 出產既酒 要用上 Chateau 一字還是有一些法規: 葡萄酒必須產自 AOC/AOP 法定產區 葡萄必須來自生產商自家葡萄園,而且是指定的 自家的酒窖必須位於產區內 所有的釀造過程必須在相關土地內進行與完成   副牌酒清單: 一級莊副牌酒 Carruades de Lafite, Pauillac|(Lafite-Rothschild 拉菲古堡) Pavillon Rouge du Chateau Margaux, Margaux|(Margaux 瑪歌酒莊) Les Forts de Latour, Pauillac|(Latour 拉圖酒莊) Le Clarence de Haut-Brion, Pessac-Leognan|(Haut-Brion 侯伯王酒莊) Le Petit Mouton de Mouton Read More

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