Brake chamber – Service chamber vs Spring chamber
https://youtu.be/exj6hz2cZds?si=JAFZh-B-3ufJ3EhH https://youtu.be/A8kQ-vABYQ4?si=qZIlAoOJ7HEf34KS
How The Aircraft’s Air Brake Works
根據呢條片 – B777 B777 用 disc-brakes?! Main gear wheels – carbon disc-brakes Nose gear wheels – do not have brakes Braking system – 3大層次 Normal 用Right hydraulic Alternate/ Reserve 用Center hydraulic Accumulator 用Right hydraulic Functions: Store pressure Parking brake Wheel brakes B777 用 Hydraulic to power the brake system! 而B777 用的actuator 是carbon discs! Braking
How Air Brakes Work ?
https://youtu.be/twuO2tsuNKo?si=x-O9COMQhN_N5L5n https://youtu.be/dMxilatT0qw?si=Li_H8RB38PvDah_w
Learn something everyday: 到底咩係「巴士總站」
最近做野關係，無意中又發現一本有趣既manual，lunchtime 有時間就kill 下time 😬 Today topic: what is Bus Terminal? Public Transport Interchange (PTI)? Reference : TRANSPORT PLANNING AND DESIGN MANUAL (TPDM) https://www.td.gov.hk/en/publications_and_press_releases/publications/tpdm/index.html VOLUME 9 – Public Transport 2.7.2 巴士線總點站(Service terminal point) : can be in three forms 1. BT – e.g TSC 2. PTI – e.g 香園圍 3. off-street lay-by – e.g B7, 116 總站 Off-street lay-by service
Airmanship
Reference: Skybrary Airmanship – Definition “Airmanship” is the consistent use of good judgment and well-developed skills to accomplish flight objectives. This consistency is founded on a cornerstone of uncompromising flight discipline and is developed through systematic skill acquisition and proficiency. Below are the Tony Kern Model : Discipline – a.k.a Flight Discipline – ability
[Eng] 瞓捩頸 Stiff neck = Sprained neck
Ref : https://www.bastillepost.com/hongkong/article/1524305-「瞓捩頸」苦不堪言 As a part time BC, I would like to share the types of minor illnesses that can affect the safety of our operations. Gastro related illnesses can be prevented by cooking food thoroughly and not eating raw food, such as oyster, sushi etc. However, this morning, a stiff neck (sprained neck) reminded
What’s VFR, IFR?
Back to basic: 揸車就無instrument driving…不過睇黎指日可待…講番揸飛機… Reference: Skybrary, VFRG (CASA) VFR Visual Flight Rules (VFR) are the rules that govern the operation of aircraft in Visual Meteorological Conditions (VMC) (conditions in which flight solely by visual reference is possible). Because of the limited communication and/or navigation equipment required for VFR flight, a VFR aircraft may be subject to
Depressurization (Decompression)
Reference: https://www.touringmachine.com/Articles/commercial/3407/
A350 cockpit
Cockpit 3D https://visites360.aircaraibes.com/a350virtual/index.html 5 reasons pilots love flying the A350 Reference: https://aircraft.airbus.com/en/5-reasons-pilots-love-flying-the-a350 Designed by pilots for pilots pilots are involved in design process Six large touchscreen displays excellent cross-cockpit visibility optimum flexibility for displaying information introduction of touchscreens Enhanced to reduce workload and raise awareness dual Head Up Display (HUD) ‘What if’ function
民航機的空調系統
Function of air condition system improve passenger comfort – air conditioning ventilation – exchange fresh air maintain cabin pressure Component of air conditioning system? B777/A350 for example – Bleed air (from APU/Engine) -> Primary heat exchanger ->air cycle machine (compressor) -> Main heat exchanger -> air cycle machine (Turbine) -> Water separator -> Mixer
Fun fact : Prime Meridian 會變嗎? (Prime meridian ≠ International Reference Meridian)
Reference: https://www.rmg.co.uk/stories/blog/astronomy/prime-meridian-unmoved 21 Aug 2015 In August 2015 a paper was published by scientists in the US explaining why the Prime Meridian at the Royal Observatory Greenwich is 102 metres to the west of the prime meridian used by satellite based navigation and timekeeping, known as the International Reference Meridian or IRM. The paper created
Gust front v.s Microburst?
Microburst affect smaller area (say around 2.5 miles), and short-lived (last for 5-10 minutes) Gust front affect wider area (say up to 20 miles) A microburst is a small concentrated downburst that produces an outward burst of strong winds at or near the surface. Microbursts are small — less than 4 km across — and short-lived, lasting
Typical causes of windshear and turbulence at VHHH?
Ref: https://www.hko.gov.hk/en/aviat/articles/files/booklet_4th_edition.pdf (6) Six typical causes of windshear and turbulence in Hong Kong: Terrain induced strong winds blowing across the hills over Lantau Island to the south of the airport (account for 75% of reported windshear) Sea breeze account for 15% of reported windshear Gust front (thunderstorm related) Microburst (thunderstorm related) Building induced Low level
Eddy Dissipation Rate (EDR) – 一個同turbulence intensity 有關既詞彙!
Reference: https://www.flyingmag.com/how-do-you-interpret-an-eddy-dissipation-rate/ EDR quantifies turbulence for a specific aircraft, and it’s not a measure of the likelihood of turbulence—just the intensity. ERR – Eddy Dissipation Rate 的三件事 refer to specific aircraft (type specific) describe the intensity of turbulence 同turbulence 發生機率無關 EDR 愈高代表Turbulence 對果類機既影響愈大 EDR is an observed or forecast value that is
VHHH windshear and turbulence information
Reference: https://www.hko.gov.hk/en/aviat/articles/files/booklet_4th_edition.pdf Two ways to deliver W/S or TURB information in VHHH Warning – via Voice-ATIS, Digital-ATIS (D-ATIS) Alert – generated automatically by the real time “up-to-the-minute” Windshear and Turbulence Warning System (WTWS), but passed to the aircraft via ATC Two levels of of Windshear alerts Microburst alert (MBA) – expect headwind loss of
