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originally posted by: BASSPLYR
a reply to: Zaphod58
The demonstrator i have a feeling is for a different project than a hypersonic spy plane or pgs.
F22 sized huh. Well theyve been testing skins to withstand hypersonic friction which is something youd be more concerned about at lower altitudes at mach 5-6 ish than what a spy plane flies at. True a hypersonic missile should not burn up before actually getting to the target. But my speculation is that this new demonstrator dovetails nicely with afre. Sounds more to me like they are trying to build a hypersonic interceptor /fighter or light tactical bomber.
you must live near me then I'm from there also heard it once as well
originally posted by: nelloh62
a reply to: Woody510
I live North West England, and have heard that numerous occasions over the last couple of years. Its always around the 2-4 am time, and is definitely not a civil aircraft. That I am sure of, but have no proof. It really is the most strange sound.