Empirical Earth · The Boomerangs — Flat-Earth Proofs That Backfire

When NASA writes “flat, non-rotating Earth” — idealizations quoted out of context

The claim

“NASA’s own documents say ‘flat, non-rotating Earth’ — they’re admitting it.”

What is measured

A modeling assumption is a tool, not a testimony. “Flat, non-rotating Earth” means “curvature and spin are negligible for this short-range problem,” stated plainly with its limits, and the same engineers reach for the round, spinning Earth the instant range, altitude or precision require it. The documents do not hide the globe; they bracket it for convenience and pick it straight back up when it matters.

What would show this is wrong

Read any of these documents in full. Every one that assumes a flat, non-rotating Earth states it as a simplifying assumption and names where it breaks down; none concludes the Earth is flat, and the same authors and agencies use round, rotating-Earth models for navigation, orbits and geodesy. Produce a single official document that argues, rather than assumes for local convenience, that the Earth is flat, and this entry would have to change. None exists.

Sources

  1. NASA RP-1207. “Derivation and Definition of a Linear Aircraft Model” (Duke, Antoniewicz & Krambeer, 1988) — a linear model for an aircraft over a flat, nonrotating Earth, stated as a simplif link
  2. Flat-Earth approximation, spherical answer. An aircraft conflict-detection patent notes the flat-Earth model is effective only for short ranges and fails toward the poles, so it employs the link
  3. Airplanes do follow the curve. The downward “orbitfall” and pitch change needed to track Earth’s curvature are automatic and imperceptible, requiring no pilot action — refuting the related f link
The full entry, with the working →

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