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Flat Earth Investigations / Re: What is the true map of the earth?
« on: May 02, 2024, 11:24:14 AM »"... faster winds in the south ....". Ah yes, we've been here before.
There was a link there: https://wiki.tfes.org/Issues_in_Flight_Analysis
I am asking you guys to address the topics in the link, rather than just read and ignore it and pretend that nothing was posted.
Amongst others at the moment, (now, 0912UTC on 2 May 2024) LAN-Chile has 2 Boeing 787 Dreamliners airborne over the South Pacific.
Reg CC-BGG is operating as LAN801 from Santiago to Auckland, a route planned as about 5300NM. The aircraft is just under halfway and estimates completing the journey with a flight time of 12 hours, giving an average ground speed of 440 kts.
Its sister ship, CC-BGH is operating as LAN804 from Melbourne to Santiago, a route planned as about 6200NM. The aircraft is about halfway and estimates completing the journey with a flight time also of 12 hours, giving an average ground speed of 520 kts.
Taking the average of the westbound and eastbound flights, 480 kts, would suggest an westerly wind component of 40 kts acting as a headwind hampering LAN801 and assisting LAN804. Wikipedia lists the cruising speed of a Dreamliner as 488 to 516 kts.
As the captains of both aircraft would not have departed unless they were sure of the distance and fuel needed, I would suggest that calculating the distance from South America to Australasia has been calculated in considerably less than "20 to 30 years", and that the windspeeds are well understood.
Those numbers are around the plane's cruise speed. But the plane should not be traveling at a speed around its cruising speed, since we know that on long haul flights planes across the oceans planes use jet streams to reach their location. It would be traveling the plane's cruising speed + jet stream.
Jetstreams even enable supersonic flight for commercial aircraft.
On the flight trackers there have been some interesting anomalies. Jeran shows at the 1h32m mark of the following video about the flight between Auckland and Santiago that True Airspeed can be seen to far exceed ground speed. Over the course of the flight the True Airspeed is either "N/A" or shows quite fast speeds.
https://www.youtube.com/watch?v=GKKHY72x3ZU
Screen shot: