Need to Know Stuff
- Qantas uses the Boeing 747-400 aircraft https://www.qantas.com/us/en/about-us/our-company/fleet/qantas-b747-400.html
- The 747-400 maximum fuel capacity is 14,200km for travel
- Distance from Sydney to Johannesburg is 11,060km on the globe
- Flight time is 13h 20m
- Therefore, a plane travels 830km/h
Distance on the Flat Earth
-Longitude of Sydney Airport is 151.1 degrees East
-Longitude of Johannesburg Airport is 28.2 degrees East
Difference of 122.9 degrees
-Sydney Airport is 13764km from North Pole
-Johannesburg Airport is 12887km from North pole
Math
Use Rule of Cosines
d^2 = a^2 + b^2 -2ab cos(C)
d = 189447696 + 166074769 -2(12764)(12887)(-.54)
d= 23,090
Conclusion
The distance from those two points on the Azimuthal Projection is 2.08x greater than the distance on the globe, therefore a plane will have to travel 2.08x faster, or 1726km/h. This is impossible because the maximum speed of the aircraft is only 988km/h.
Furthermore, the maximum fuel capacity of the aircraft can travel a distance of 14,200km. That is only 60% of the fuel needed to cross the distance on the Azimuthal Projection.
This has been discussed so many times on here. While I agree with your consensus that these observations severely weaken claims made by the very specific flat earth model presented in the wiki there are dozens of other flat earth models. Several of which are not weakened by these observations. Because these observations severely weaken predictions of claims made in the flat disk model with an ice wall and the north pole in the center there are many other flat earth models for people to follow.
For supporters of the models that are weakened by this evidence and these observations I got all the rebuttals from a flight time superthread. (Pick any one of your rebuttals from the list below) Here's a link:
https://forum.tfes.org/index.php?topic=6633.0-Because the angles of a triangle drawn between three flight paths = 180 degrees the earth is flat.
-Because the angles of a triangle drawn between three flight paths = 179.99984 degrees the earth is slightly concave.
https://forum.tfes.org/index.php?topic=6633.msg121615#msg121615-Distances between two cities which are far apart is unknown
https://forum.tfes.org/index.php?topic=6633.msg121996#msg121996-Flight GPS systems are inaccurate
https://forum.tfes.org/index.php?topic=6633.msg122030#msg122030https://forum.tfes.org/index.php?topic=6633.msg122441#msg122441-GPS systems are based on a round earth therefore will give measurements/distances which support a round earth.
-Aircraft are using instruments which assume round earth coordinates which will support a round earth.
-There is no flat earth map.
-The difference in flight time is based off of flight speed which has yet to be proven.
-The airplane speed and range is based off round systems therefore will give speeds and ranges which support a round earth
https://forum.tfes.org/index.php?topic=6633.msg122359#msg122359-plane speed measurements are unreliable
https://forum.tfes.org/index.php?topic=6633.msg122364#msg122364-there are no flat earth flight programs, systems, GPS etc because the flat earth aircraft navigation fund is nonexistent.
https://forum.tfes.org/index.php?topic=6633.msg122369#msg122369-Triangulation as a measurement of distance can be inaccurate because the "known" locations used for triangulation are based on a round earth system
https://forum.tfes.org/index.php?topic=6633.msg122410#msg122410-there are almost an infinite number of continental configurations (If a flight disproves flat earth continental configuration 23985729387592873 you then need to test continental configuration 23985729387592874).
-Groundspeed measurement instruments use a round earth coordinate system therefore will give results which support a round earth
https://forum.tfes.org/index.php?topic=6633.msg122411#msg122411-proof is needed that mile measurements on a highway are accurate
https://forum.tfes.org/index.php?topic=6633.msg122423#msg122423-Google maps is based on a round earth coordinate system
https://forum.tfes.org/index.php?topic=6633.msg122433#msg122433-any navigation system based on longitude and latitude is a round earth navigation system (which is most likely used in all navigation systems)
https://forum.tfes.org/index.php?topic=6633.msg122655#msg122655-any map, navigation, or measurement system which uses Latitude and Longitude in any way is inaccurate
https://forum.tfes.org/index.php?topic=6633.msg122664#msg122664-That's not the map of the earth (a variant of there is no map of the earth)
https://forum.tfes.org/index.php?topic=6633.msg122672#msg122672