[GA Piston Engine] Effect of Increasing Height on Power Output
August 3, 2024
(On a ‘standard’ day) Aicraft climbs / fly high –> output of the engine decreases for two reasons: decrease in atmospheric pressure – reduces the manifold pressure and thus the flow of air into the cylinders (a similar effect to closing the throttle) – can be compensated for by progressively opening the throttle decrease in
Too lean, Too rich, CCM, Best power, Best economy
August 3, 2024
Notes: The carburettor measures the weight of air passing through the induction manifold and uses this measurement to regulate the amount of fuel discharged into the air stream (according to a predetermined schedule). What’s rich, lean and CCM? Rich: 1:8 Chemically Correct fuel/air Mixture (CCM): 1:15 Lean: 1:20 In theory, the ‘correct’ quantity
Cathay Stories: A pilot explains the art of the go-around
August 3, 2024
A pilot explains the art of the go-around | Cathay (cathaypacific.com)
Cathay Stories: Why (and how) we select alternate airports before departure
August 3, 2024
How we fly: choosing alternate airports | Cathay (cathaypacific.com)
CX fuel – Greener Together: Switching to Sustainable Aviation Fuel (SAF)
August 3, 2024
Also ref: Cathay Pacific launches Asia’s first major Corporate Sustainable Aviation Fuel (SAF) Programme – Cathay Pacific April 20, 2022 — Cathay Pacific is launching its pilot Corporate Sustainable Aviation Fuel (SAF) Programme, the first major programme of its kind in Asia. The SAF used for the launch of this programme is made from used
CX Management Team
August 3, 2024
Reference: Management team | Cathay Pacific Patrick Healy has been Cathay Group Chair since November 2019. He is also Chair of Swire Coca-Cola Limited, a Director of John Swire & Sons (H.K.) Limited and a Non-Executive Director of Swire Properties Limited. Prior to his appointment, Patrick was Managing Director of Swire Coca-Cola Limited in Hong Kong,
Region of “Reverse Command”
July 31, 2024
Speed region below the speed for minimum power/maximum endurance is called the region of reverse command. In the region of ‘reverse command’, if speed is increased (by decreasing the angle of attack), then unless engine power is reduced, the aeroplane will climb (due to the surplus of engine power at the higher speed).
TORA, TODA, ASDA, LDA, Clearway, Stopway
July 26, 2024
Runway End Safety Area (RESA) a cleared and graded area adjacent to the end of a runway two type: undershoot RESA, overshoot RESA undershoot RESA – provided for use in the event of an aircraft undershooting the runway overshoot RESA – provided for use in the event of an aircraft overruning the runway after an
點樣推理用咩Runway? (from wind perspective)
July 26, 2024
Which runway is using for take-off or landing? 要決定用邊條Runway, 除左考慮風之外，還有其他factors, 但光是用風去推又點計呢? 用VHHH做例子, Runway 既方位就有25, 07 假設家下是Wind 110/10KT 那 110 – 70 = 40 (代表有 head wind) 那250 – 110 = 140 (代表有 tail wind) 簡單D, Runway 同 wind direction 相減既絕對值 < 90 就代表是 head wind 成分, 那就是more favorable as suitable runway (from wind perspective)
