Pick ANY 3 points at least 2000 miles apart. Use flight planning software to draw a triangle with a direct route between each them. Measure the interior angles of that triangle. (i.e. the incoming vector minus the outgoing vector). When you add them, they will be more than 180 degrees. Irrefutable conclusion: the earth is a spheroid.
I do not have any flight planning software handy. I used to a couple years back, but I haven't been flying in a while. You claim to be an aeronautical engineer. Surely one of your friends has access to a piece of software you can use to convince yourself of this.
Seriously? I wasn't clear?
Pick ANY 3 points at least 2000 miles apart. Use flight planning software to draw a triangle with a direct route between each them. Measure the interior angles of that triangle. (i.e. the incoming vector minus the outgoing vector). When you add them, they will be more than 180 degrees. Irrefutable conclusion: the earth is a spheroid.
I do not have any flight planning software handy. I used to a couple years back, but I haven't been flying in a while. You claim to be an aeronautical engineer. Surely one of your friends has access to a piece of software you can use to convince yourself of this.