Aurora spy plane ion propulsion.
Donuts on a rope contrail.
Or black programs may notice that the center section of the contrail is extremely similar to the famous doughnuts on a rope contrail.
Its distinctive donuts on a rope contrail was spotted recently above utah s wasatch mountains.
Sometime around the early 1990 s the people who get excited about such things got excited about donuts on a rope contrails which many assumed were the results of pulse detonation engines powering hypersonic aurora spyplanes.
An update to the exotic propulsion aircraft page on the federation of american scientists web site that was recently brought to my attention provides a new photograph of a donuts on a rope contrail shot on november 10 2006 these contrails are interpreted by many people as evidence of secret high speed aircraft utilizing pulse detonation wave engines pdwe.
And europe suggesting that the classified pulser is no longer.
More than a decade ago cotton ball like contrails were spotted and photographed periodically by observers throughout the u s but reports had dropped off sharply in recent years aw st may 11 1992 p.
Government has consistently denied such an aircraft was ever built.
There are many photos of strange contrails shown.
Donuts on a rope contrails produced by an unknown high speed high altitude aircraft have been reported throughout the u s.
Donuts on a rope contrail buena vista co 10 20 12.
Aurora was a rumored mid 1980s american reconnaissance aircraft there is no substantial evidence that it was ever built or flown and it has been termed a myth.
I went to the web looking for donuts on a rope.
They clearly are not the same contrail then i read an article i think on wikipedia about aurora.
Donut on a rope contrails are they made by normal jet aircraft or secret black programs.
