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Unusual vapor trail causes speculation[Top-Secret 'pulse jet' tests]
Dayton Daily News ^
| 08 Jan 2007
| Jim DeBrosse
Posted on 01/15/2007 5:46:27 PM PST by FLOutdoorsman
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To: El Gato
Interesting program on credible source reports.
61
posted on
01/15/2007 8:59:09 PM PST
by
mcshot
("If it ain't broke it doesn't have enough features." paraphrased anon.)
To: mcshot
62
posted on
01/15/2007 9:03:20 PM PST
by
EternalVigilance
(Circumstances are the fire by which the mettle of men is tried.)
To: FLOutdoorsman
Those type formations are caused by high velocity exhaust streams out of a nozzle. As the exhaust stream cools off/slows down, it begins to form its own vortices that will curl in in on each other like you see. Due to various dynamics/irregularities in the atmosphere and the exhaust stream vortices themselves, a few will become large enough to make the donut formations that we see down on the ground.
For what it is worth, I do not see the pulse-jet as a viable platform for a M4+ engine. For one thing it would beat itself and the airframe up pretty hard, and both would have a very low service limit. I would have to think that thing would also be very un-stealthy to acoustical detection modes, maybe others too.
But if it was a pulse jet, the exhaust pulses would be much more pronounced and at regular intervals than we have always seen in these photos.
Wolf
63
posted on
01/15/2007 10:47:54 PM PST
by
RunningWolf
(2-1 Cav 1975)
To: RunningWolf
"But if it was a pulse jet, the exhaust pulses would be much more pronounced and at regular intervals than we have always seen in these photos." And almost certainly more numerous and closer together (higher pulse-rate frequency)...
64
posted on
01/16/2007 9:15:12 AM PST
by
TXnMA
("Allah": Satan's current alias...)
To: RunningWolf
For what it is worth, I do not see the pulse-jet as a viable platform for a M4+ engine. For one thing it would beat itself and the airframe up pretty hard, and both would have a very low service limit. That's my thought also: the vibration from the pulsed detonations would be very destructive.
To: RunningWolf
Thank you for what appears to be the one competent, insightful post of this thread.
The gene pool is getting pretty shallow here @ FR.
66
posted on
01/16/2007 11:14:14 AM PST
by
VaBthang4
("He Who Watches Over Israel Will Neither Slumber Nor Sleep")
To: Joe Boucher
>>>
I think they call it phased pulse array. "Phased array" is a radar term refering to a radar that transmits continuously without the "sweeping" motion normally associated with radar screens.
Not sure what a phased pulse array would be?
67
posted on
01/16/2007 6:29:53 PM PST
by
HardStarboard
(Give Pelosi and Reid Enough Rope to Hang Themselves.)
To: xcamel
I have several such photos. Nothing unusual in this. More wacko chem-trail nonsense.
To: HardStarboard
Neither do I but that is what I've heard it called.
Obviously something that pulses but not too sure what or how.
That is all i've heard.
69
posted on
01/16/2007 6:34:34 PM PST
by
Joe Boucher
(an enemy of islam)
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