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bigbrain
BANNED
409 Posts |
 Posted - 11/17/2005 : 15:46:22 [Permalink]
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quote:
Originally posted by filthy
For your perusal and edification: the Clavius Moon Base.
At that website you can read:
"We should hear the lunar module's descent engine firing in the radio transmissions during the landing".
"When firing in a vacuum most rocket engines are silent. Even the large SPS engine on the service module was not audible from the command module. This is because the noise from a rocket engine is not really coming from the engine, but from the effect of the exhaust on the surrounding atmosphere. It's the shock wave of the supersonic exhaust gases colliding with the air near the engine nozzle. If there's no atmosphere, you shouldn't expect to hear a loud sustained sound".
Who is this imbecile?
The air hinders the propagation of the noise.
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"Obsequium amicos, veritas odium parit" (Flattery gets friends, truth hatred)
Publius Terentius Afer, "Terence", Roman dramatist
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filthy
SFN Die Hard
USA
14408 Posts |
Posted - 11/17/2005 : 16:26:12 [Permalink]
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quote:
Originally posted by bigbrain
quote:
Originally posted by filthy
For your perusal and edification: the Clavius Moon Base.
At that website you can read:
"We should hear the lunar module's descent engine firing in the radio transmissions during the landing".
"When firing in a vacuum most rocket engines are silent. Even the large SPS engine on the service module was not audible from the command module. This is because the noise from a rocket engine is not really coming from the engine, but from the effect of the exhaust on the surrounding atmosphere. It's the shock wave of the supersonic exhaust gases colliding with the air near the engine nozzle. If there's no atmosphere, you shouldn't expect to hear a loud sustained sound".
Who is this imbecile?
The air hinders the propagation of the noise.
I am going to be generous and write this off to English being your second language. Surely you know that sound waves require a mediun such as an atmosphere to be able to travel. There is no such medium in space.
Now, what did you really mean?
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"What luck for rulers that men do not think." -- Adolf Hitler (1889 - 1945)
"If only we could impeach on the basis of criminal stupidity, 90% of the Rethuglicans and half of the Democrats would be thrown out of office." ~~ P.Z. Myres
"The default position of human nature is to punch the other guy in the face and take his stuff." ~~ Dude
Brother Boot Knife of Warm Humanitarianism,
and Crypto-Communist! 
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Dr. Mabuse
Septic Fiend
Sweden
9688 Posts |
Posted - 11/17/2005 : 16:37:51 [Permalink]
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quote:
Originally posted by bigbrain
quote:
Originally posted by filthy
For your perusal and edification: the Clavius Moon Base.
At that website you can read:
"We should hear the lunar module's descent engine firing in the radio transmissions during the landing".
"When firing in a vacuum most rocket engines are silent. Even the large SPS engine on the service module was not audible from the command module. This is because the noise from a rocket engine is not really coming from the engine, but from the effect of the exhaust on the surrounding atmosphere. It's the shock wave of the supersonic exhaust gases colliding with the air near the engine nozzle. If there's no atmosphere, you shouldn't expect to hear a loud sustained sound".
Who is this imbecile?
The air hinders the propagation of the noise.
I don't understand what you are trying to say?
Do you think it's an imbecil who is saying the line "We should hear the lunar module's descent engine firing in the radio transmissions during the landing" ???
That's what I think. The other part is a respons explaining why there is not any sound.
By the way, here is the link to the part you quoted.
Bigbrain, it's common curtesy to provide a link to the lines you are quoting, so people can look it up to ensure that the text is quoted in the right context. |
Dr. Mabuse - "When the going gets tough, the tough get Duct-tape..."
Dr. Mabuse whisper.mp3
"Equivocation is not just a job, for a creationist it's a way of life..." Dr. Mabuse
Support American Troops in Iraq:
Send them unarmed civilians for target practice..
Collateralmurder. |
| Edited by - Dr. Mabuse on 11/17/2005 16:40:47 |
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Dave W.
Info Junkie
USA
26022 Posts |
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H. Humbert
SFN Die Hard
USA
4574 Posts |
Posted - 11/17/2005 : 19:28:48 [Permalink]
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quote:
Originally posted by Dave W.
In space, no one can hear you use a large font.
Ok, that made me laugh out loud.
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"A man is his own easiest dupe, for what he wishes to be true he generally believes to be true." --Demosthenes
"The first principle is that you must not fool yourself - and you are the easiest person to fool." --Richard P. Feynman
"Face facts with dignity." --found inside a fortune cookie |
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Randy
SFN Regular
USA
1990 Posts |
Posted - 11/17/2005 : 19:52:23 [Permalink]
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quote:
Originally posted by H. Humbert
quote:
Originally posted by Dave W.
In space, no one can hear you use a large font.
Ok, that made me laugh out loud.
(me too!)
But, it's necessary for the woo-woo factor. |
"We are all connected; to each other biologically, to the earth chemically, to the rest of the universe atomically."
"So you're made of detritus [from exploded stars]. Get over it. Or better yet, celebrate it. After all, what nobler thought can one cherish than that the universe lives within us all?"
-Neil DeGrasse Tyson |
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bigbrain
BANNED
409 Posts |
Posted - 11/18/2005 : 13:27:24 [Permalink]
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quote:
Originally posted by Randy
Notice the shape and colors.
Did the Chinese land with 3 different parachutes?
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"Obsequium amicos, veritas odium parit" (Flattery gets friends, truth hatred)
Publius Terentius Afer, "Terence", Roman dramatist
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BigPapaSmurf
SFN Die Hard
3192 Posts |
Posted - 11/18/2005 : 13:41:54 [Permalink]
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http://www.spaceflightnow.com/shenzhou/031015landing.html
quote:
After tearing its way through the upper atmosphere and having slowed drastically from its orbital speed of five miles per second, the capsule deployed its parachutes to further slow the vehicle before coming to a soft landing.
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"...things I have neither seen nor experienced nor heard tell of from anybody else; things, what is more, that do not in fact exist and could not ever exist at all. So my readers must not believe a word I say." -Lucian on his book True History
"...They accept such things on faith alone, without any evidence. So if a fraudulent and cunning person who knows how to take advantage of a situation comes among them, he can make himself rich in a short time." -Lucian critical of early Christians c.166 AD From his book, De Morte Peregrini |
| Edited by - BigPapaSmurf on 11/18/2005 13:42:40 |
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bigbrain
BANNED
409 Posts |
Posted - 11/18/2005 : 14:21:46 [Permalink]
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quote:
Originally posted by filthy
For your perusal and edification: the Clavius Moon Base.
Hey, dear friend filthy, ask http://www.clavius.org why NASA buffoons made this trajectory to go to Saturn
The Earth runs at 65,000 miles per hour.
Why did NASA buffoons make their probe to turn two times round Venus?
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"Obsequium amicos, veritas odium parit" (Flattery gets friends, truth hatred)
Publius Terentius Afer, "Terence", Roman dramatist
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pleco
SFN Addict
USA
2998 Posts |
Posted - 11/18/2005 : 14:27:10 [Permalink]
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| Ah, good - we have come full circle. I was so waiting for that. |
by Filthy
The neo-con methane machine will soon be running at full fart. |
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Dr. Mabuse
Septic Fiend
Sweden
9688 Posts |
Posted - 11/18/2005 : 14:38:24 [Permalink]
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quote:
Originally posted by bigbrain
Notice the shape and colors.
Did the Chinese land with 3 different parachutes?
Yes, at least 2, possibly three different parachutes designed for different air-speeds. Once the capsule has slowed down to sub-sonic speed, if an ordinary parachute was deployed at 300m/s (~1000km/h) the parachute would get ripped to shreds. A specially designed parachute is deployed made to slow the capsule from 300m/s to perhaps 100m/s. Have a look at Randy's second picture, the shape of that parachute is more a pear than an ordinary parachute, like the other pics. |
Dr. Mabuse - "When the going gets tough, the tough get Duct-tape..."
Dr. Mabuse whisper.mp3
"Equivocation is not just a job, for a creationist it's a way of life..." Dr. Mabuse
Support American Troops in Iraq:
Send them unarmed civilians for target practice..
Collateralmurder. |
| Edited by - Dr. Mabuse on 11/18/2005 14:40:24 |
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filthy
SFN Die Hard
USA
14408 Posts |
Posted - 11/18/2005 : 14:50:34 [Permalink]
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quote:
Originally posted by pleco
Ah, good - we have come full circle. I was so waiting for that.
I wasn't waiting for it but I was sure it was as envitible as the flu.
Hey b, we covered gravity slings to the point of dispair in other threads, remember? Or are we mistaken about your age and you are suffering from senile dementia?
quote:
Notice the shape and colors.
Did the Chinese land with 3 different parachutes?
As is perfectly obvious in the series of photos: same chute, different light values. Pretty one, ain't it. Much finer than the drab rags we used.
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"What luck for rulers that men do not think." -- Adolf Hitler (1889 - 1945)
"If only we could impeach on the basis of criminal stupidity, 90% of the Rethuglicans and half of the Democrats would be thrown out of office." ~~ P.Z. Myres
"The default position of human nature is to punch the other guy in the face and take his stuff." ~~ Dude
Brother Boot Knife of Warm Humanitarianism,
and Crypto-Communist!
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Dr. Mabuse
Septic Fiend
Sweden
9688 Posts |
Posted - 11/18/2005 : 15:11:22 [Permalink]
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| Filthy, the two first 'chutes definitly looks like two different ones. Just look at their deployed shape. I submit that they are used for different speeds, at different stages of the reentry. |
Dr. Mabuse - "When the going gets tough, the tough get Duct-tape..."
Dr. Mabuse whisper.mp3
"Equivocation is not just a job, for a creationist it's a way of life..." Dr. Mabuse
Support American Troops in Iraq:
Send them unarmed civilians for target practice..
Collateralmurder. |
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pleco
SFN Addict
USA
2998 Posts |
Posted - 11/18/2005 : 15:17:55 [Permalink]
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| Either way, what's the point? |
by Filthy
The neo-con methane machine will soon be running at full fart. |
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Randy
SFN Regular
USA
1990 Posts |
Posted - 11/18/2005 : 17:44:54 [Permalink]
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quote:
Originally posted by Dr. Mabuse
Filthy, the two first 'chutes definitly looks like two different ones. Just look at their deployed shape. I submit that they are used for different speeds, at different stages of the reentry.
The first 'deformed' parachute photo could have a deployment ring that dampens the chute's opening so the shock of high speed does not tear it apart. I first noticed about this on programs on parachutes used on the Mars Rover missions from near two years ago. |
"We are all connected; to each other biologically, to the earth chemically, to the rest of the universe atomically."
"So you're made of detritus [from exploded stars]. Get over it. Or better yet, celebrate it. After all, what nobler thought can one cherish than that the universe lives within us all?"
-Neil DeGrasse Tyson |
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