Month: April 2026

Bus Weight and Bus Performance

做左咁耐巴士佬又真係好似無留意過巴士食幾多油 今日就無意睇文獻見到,refer to HK Transport Department 既 TPDM ( transport planning and design manual ) volume 9 (第9冊) 既其中一頁 Well 原來3軸車重24噸啦 消油就10-12 L diesel 左右 fuel consumption 就 28-56 L per 100 km 有趣有趣 Read More

呢獲我真係一夠雲

幾有趣 中英兩學 Read More

Oil Types – Mineral, Ashless Dispersant, And Synthetic

Ref: https://www.boldmethod.com/blog/2013/11/aircraft-oil-mineral-ashless-dispersant-synthetic/#:~:text=There%20are%20two%20main%20oil,them%20to%20the%20oil%20filter 到底用Mineral based oil 定 AD oil? There are two main oil types used in aircraft engines: mineral oil and ashless dispersant (AD) oil. Both types are made of mineral oil – a refined, petroleum based oil. However, AD oils have added chemicals (additives), which collect debris inside the engine and carry them to Read More

Back to Basic: Trim

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Course – Heading – Track

Course – Heading – Track   Read More

2026 – the 3rd hour on C172

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Back to basic series: why headwind takeoff?

4 major reasons: Read More

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