Global aircraft grounding hampers weather forecasting during COVID-19

[Ref Flight International Magazine 28 Apr – 4 May 2020] Global aircraft grounding hampers weather forecasting, says WMO Sensors, computers and communications systems onboard commercial jets automatically collect and transmit meteorological observations to ground stations. However, this data collection has been curtailed by the sharp decline in air traffic. “In-flight measurements of ambient temperature and […]

Japanese 787 suppliers pause operations during COVID-19

[Ref Flight International Magazine 28 Apr – 4 May 2020] On 6 April 2020, Boeing announced the suspension of operations at its 787 final assembly facilities in North Charleston, South Carolina, “until further notice”. From 20 April until May 2020, Boeing’s tier one suppliers in Japan (Kawasaki Heavy Industries and Subaru’s aerospace unit) have suspended […]

Load Factor of airlines during COVID-19

[Ref Flight International Magazine 28 Apr – 4 May 2020] What’s the significance of Load Factor? Regarding the impact of social distancing on flights, IATA points out that a load factor of around 66% – based on the middle seat being left empty in a 3-by-3 narrowbody layout – would be unprofitable for airlines on […]

What’s “impulse coupling”?

[Ref Aircraft Systems for Pilots (ISBN: 978-1-61954-628-8)] Impulse coupling is a small device riding over the magneto shaft. It consists of a cam plate with flyweight assembly (flywheels), spring, and a body assembly. Function and basic working principle As we have learnt from the starting system, the starter motor is used to turn the flywheel. Actually, […]