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originally posted by: Zaphod58
a reply to: playswithmachines
They have supersonic wind tunnels. And if it's unstable at low speeds, how does it land? If you can't control it at speeds needed to land, you're sure as hell not going to build it. It can't fly forever.
originally posted by: RAY1990
a reply to: FireMoon
It could be a air balloon for all I know.
The witnesses said it hovered for about 10 minutes – during which time military aircraft were also seen making a series of low-level passes – before moving upwards, out of sight, at great speed.
British Ministry of Defense reportshuge diamond shaped object over Scotland
Forty years ago (March 7, 1971), a prototype of a new class of aircraft, so odd-shaped that John McPhee of The New Yorker dubbed it the "Deltoid Pumpkin Seed" (see image below) completed its one and only successful test flight at the FAA Test Center in New Jersey. The craft was an early attempt at a hybrid airship that would rely on both an aerodynamic shape and internal helium to lift heavy cargo loads at low cost, and into remote areas where large cargo planes could not land.