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Originally posted by zorgon
NAVY Space Command Uncovered
Many of you know that for years John and I have insisted on there being a secret astronaut program.
Originally posted by Aliensun
The premise of this thread proves to be really disappointing. First, the video is for viewers of about a first-year college level. It has some educational value, but the only portion important to the argument offered is the naval logo at the very beginning, and that is meaningless when you consider that it is merely a patch of a part of a part of a system.
Zorgon ... you've provided a good deal of interesting info but mainly relating to hardware/technical issues.
However, I'm in agreement with Aliensun's comment above and unless I've missed something vital and illuminating, I'm sorry to say but I feel I'm completely missing the point you're trying to make with this lengthy thread of yours.
You title your thread "Navy Space Command Uncovered" and the initial impression I get from reading that sentence is that you're about to make a revelation that there is a completely seperate and for all intents and purposes, a clandestine organization that trains, maintains and supports a cadre of "off the books" astronauts along with all the supporting hardware/infrastructure required for such an organization.
Furthermore, a further implication inherent within the thread title is that this clandestine and unknown "Navy Space Command" was created and therefore exists to perform some required role or to undertake some kind of tasks that NASA must obviously be completely unsuited to perform.
So I guess I have 2 question for you:
"What EXACTLY are the SPECIFIED roles, duties and missions that these "secret" astronauts and specifically the Navy Space Command WOULD be called on to perform ?"
"What missions and objectives have ALREADY been assigned to, and COMPLETED by, these "secret astronauts" and the Navy Space Command since it's inception ?"
Originally posted by JayinAR
reply to post by Sam60
Like I said, I don't think that the doughnut contrails indicate any sort of pulse directed propulsion system.
Originally posted by JayinAR
reply to post by wonderworld
This thread was diverted into CONTRAILS when someone used the picture of a doughnut vapor-trail as an illustration of some sort of advanced propulsion.
Originally posted by Phage
reply to post by Sam60
What winglets do is (in effect) increase the effective wingspan which reduces induced drag but wingtip vortices cannot be eliminated. They go hand in hand with the production of lift.
Re: The photos. They are not the same effect. The top image shows the wingtip vortices "capturing" the contrails separately, they are not merging. Note how they spread. The lower image demonstrates the Crow Instability in action. The counter-rotating vortices merge and form independent vortex rings.
Don't ask me why it happens sometimes and not others.
Originally posted by JayinAR
reply to post by Phage
Oh, I see.
Is this why I have seen it argued, and even parroted the argument, that the actual "speed of sound" is variable, based on atmospheric controls?
As has been pointed out, a sonic boom is a continuous phenomenon produced by the passage of the shock wave of an aircraft flying at supersonic speeds. It is not produced by "breaking the sound barrier".
Originally posted by JayinAR
reply to post by Phage
Oh, I see.
Is this why I have seen it argued, and even parroted the argument, that the actual "speed of sound" is variable, based on atmospheric controls?
The lower the density that of a medium, the faster the speed of sound and the higher the compressibility is, the slower the sound travels. The speed of sound in air is approximately 331.5 m/s at 0 °C or around 1200 km per hour. The speed of sound through air is approximately 343 m/s at normal room temperature, which is at 20 °C. The speed of sound through air is 346 m/s at 25 °C. The speed of sound in air is approximately figured out by the formula …
speed of sound (m/s) = 331.5 + 0.60 T(°C)
For example, the speed of sound in air is 386 m/s at 100 °C. The sound of speed in air is increased by 0.60 m/s for each increase of degree in air temperature. The speed of sound is faster at higher temperatures because molecules collide more often.