originally posted by: ignorant_ape
a reply to: 23432
thankyou for :
another display of utter scientific illiteracy
you dont even understand what occams razor actualy says
further your dishonest obsesion with visible curcature :
1 - fails to understand what you should be able to see and under what conditions
2 - deliberatly ignores all direct observations of the speroid earth and indirect calculations that validate the theory
but hey - style over substance - why actually answer questions when you can hide behind dishonest pictures
ATS is a discussion forum - discuss .........................
First of all, calling people dishonest and trolls is not a "discussion". So why don't you take your own advice, before telling anyone else what to do.
So let's discuss curvature, instead of this childish name-calling crap....
You claim the Earth has a curvature which would be about 8 inches per mile.
Do airplanes account for curvature, or not?
An airplane must rely on accurate altitude readings, obviously.
Flying at 580 mph, over an 8 in per mile curvature, would be 4640 inches per hour, or 386.6 feet per hour.
At 580 mph, the plane would need to be in a constant descent rate of 6.44 feet PER MINUTE, just to maintain the same altitude.
Most plane altimeters use air pressure at sea level to measure altitude. Altitude errors occur in extreme cold conditions, and must be adjusted to
maintain accurate readings.
In general, an airplane flies level throughout its flight, at the same altitude, until it begins its descend to land.
No matter how big the sphere is, you cannot fly above it and stay level throughout, at the same altitude, unless you are in a CONSTANT DESCENT
THROUGHOUT THE FLIGHT.
In order to fly constantly above a sphere, the nose of the plane would have to pitch downward throughout the flight. It would never fly level to the
ground, because the ground itself would never be level. To follow around a ball, you must fly in an arc.
The aircraft variometer measures the rate of ascent and decent. Every airplane would have to set its variometer for a constant rate of desecent, to
match the curvature. No airplane sets its veriometer for a constant descent.
The aircraft also has a vertical speed indicator, which indicates whether the plane is climbing, descending, or in level flight.
How the VSI Works
The vertical speed indicator is made up of a diaphragm inside of an airtight instrument casing. The diaphragm is connected by linkage and gears to the
needle on the face of the instrument. Static pressure lines are connected to both the inside of the diaphragm and the instrument casing. The casing
surrounding the diaphragm has a metered leak, which helps reflect the rate of climb of descent.
Pressure changes are measured instantaneously within the diaphragm as it expands and contracts from the pressure. The metered leak in the surrounding
instrument casing also measures the pressure change, but the leak provides an intentional lag, allowing the instrument to measure the pressure change
more gradually than inside the diaphragm.
This lag comes from the consistent pressure leak and the corresponding rate of climb or descent as it's measured on the instrument needle in feet per
minute. After a few seconds of level flight, the two pressures equalize and the vertical speed indicator shows '0' feet per minute
So let's go over this -
An airplane flies level throughout most of its flight, since the VSI reads 0 feet per minute
The Earth's curvature would require a plane flying 580 mph to fly at a CONSTANT descent rate of 6.44 feet per minute
No plane flies in a constant descent.
Proving the Earth is flat.