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originally posted by: turbonium1
I just wanted to confirm what you're saying, because it's an important point.
If you recall, I told you wires can be used to control a jump. You didn't agree.
The wires ARE used to control the Mythbusters jump. You say - the wires "have slowed the Mythbusters jump".
Good. That is correct. The jump IS slower than a normal jump in 1g.
Then, it is true that we CAN match Young's jump on Earth, by using wires.
You said it was impossible because the wires do NOT slow the jump down, and do NOT control the speed of the jump (specifically, the descent).
So there is nothing in Young's jump that can only be done in lunar gravity. We can do it on Earth, with wires, and slow it to 66.66% speed, for a perfect match to Young's jump.
Young's jump is easily repeatable on Earth. Because Young's jump WAS done on Earth!
A jump in true lunar gravity would NOT look like Young's jump. It would be very different. An astronaut in 1/6g would jump MUCH higher than Young did, without a doubt.
Do you really think a jump on the moon would be identical in every way to a jump on Earth, by just using wires and set to 66.66% speed?
It shows exactly how they did Young's jump - using wires and putting it to 66.66% speed!
originally posted by: FoosM
originally posted by: Rob48
originally posted by: FoosM
Wait, where are you getting this 1200 BTU/hr figure from?
Time and time again you are demonstrating that you are not reading what I wrote!
Here is what I wrote in the very post you linked to:
The astronauts' body weight was one sixth of that on the Earth, so moving around expends less energy. With that in mind, the PLSS design which was based on a nominal metabolic rate of 1200 BTU per hour [1] looks quite generous.
See that little [1]? That's called a reference. That's how scientists quote citations. Look at the bottom of my post:
[1] Apollo Operations Handbook: Extra Vehicular Mobility Unit www.lpi.usra.edu...
That tells you that the figure referenced by the [1] comes from the source numbered [1] in the footnotes. This is pretty basic stuff.
Oh... cause I got this from NASA:
Analysis results indicated that the Apollo astronauts fell 3% of their EVA time; walked, loped, or ran at speeds ranging from 1.3 to 5.5 kph (0.8 to 3.4 mph); and reached metabolic rates of more than 2 215 617.39 J/hour (2100 BTU/hour).
And yeah, obviously numbers like 2100 likely wasn't sustained for a full hour, but I wonder how fast water would get depleted when such numbers are being reached? And how much discomfort an astronaut was feeling if he wasn't being cooled quick enough. Or the air was not being scrubbed fast enough?
Lets see here:
Heat gains:
Electrical system: 140 BTU/hr
Solar gain: 250 BTU/hr
Astronaut metabolic rate: 2000 BTU/hr
Total: 2390 BTU/hr
Heat loss: 1600 BTU/hr
hmmm...
Let me ask you this question.
Did NASA ever state that there were problems with the sublimators getting clogged?
ston.jsc.nasa.gov...
originally posted by: ipfreely32
Seen the landing sites? You place arrows pointing at white dots on the lunar surface and require our imagination to see them. The "landing sites" look like cosmic rays to me. [snipped]
originally posted by: ipfreely32
Seen the landing sites? You place arrows pointing at white dots on the lunar surface and require our imagination to see them. The "landing sites" look like cosmic rays to me. [snipped]
originally posted by: ipfreely32
a reply to: onebigmonkey
Yes.
en.wikipedia.org...
duh.
If someone posted these pics saying this was a UFO on the moon,he would be ridiculed off this site.
originally posted by: ipfreely32
a reply to: onebigmonkey
Yes.
en.wikipedia.org...
duh.
originally posted by: SayonaraJupiter
So NASA did it again. They smashed another lunar probe. Crashed on the far-side of the moon. Where nobody could confirm it. Along with LADEE went the LLCD, which was a very big deal for space communications.
I'm sure the LRO will be able to find the LADEE crater. It seems like LRO has a never ending supply of fuel with which to monitor and make maneuvers. It didn't take long for LRO to get images of China's landing site. It didn't take long for LRO to take pictures of LADEE. Lot's of self confirming business going on here, imho.
LADEE means that $250 million will net you about 100-days of lunar science orbit.
originally posted by: SayonaraJupiter
So NASA did it again. They smashed another lunar probe. Crashed on the far-side of the moon. Where nobody could confirm it. Along with LADEE went the LLCD, which was a very big deal for space communications.
I'm sure the LRO will be able to find the LADEE crater. It seems like LRO has a never ending supply of fuel with which to monitor and make maneuvers. It didn't take long for LRO to get images of China's landing site. It didn't take long for LRO to take pictures of LADEE. Lot's of self confirming business going on here, imho.
LADEE means that $250 million will net you about 100-days of lunar science orbit.
It didn't take long for LRO to get images of China's landing site. It didn't take long for LRO to take pictures of LADEE. Lot's of self confirming business going on here, imho.
originally posted by: Rob48
In what way? Everyone who matters already knows that they were genuine. The people giving them funding certainly know they were genuine. All the international organisations and scientists they collaborate with know.
We have already seen the landing sites from just 25km orbit. What tangible benefit would there be to wasting billions on a mission to photograph sites in close-up that we already have photos of (from the original missions) just to convince the tiny proportion of the population who don't believe? And who, in any case, have shown that no amount of evidence would change their mind?
originally posted by: ipfreely32
Seen the landing sites? You place arrows pointing at white dots on the lunar surface and require our imagination to see them. The "landing sites" look like cosmic rays to me. [snipped]edit on Sun Apr 20 2014 by DontTreadOnMe because: off topic material removed. Terms and Conditions of Use--Please Review
Close-up detailed images of the landing sites would allow scientists to study the effects of 40+ years in the lunar environment. Perhaps they'd see how micrometeorites shredded one flag, while all the other flags remained intact.
You can't do such analyses with your little spcks and blobs
It would also benefit by sparking public interest in further manned space exploration. Do you think people would get more excited by detailed, close-up images of an American flag on the moon, or seeing a little speck from orbit that they claim is the flag?
Come on, now. You're making up some ridiculous excuses to avoid the fact of the matter.
originally posted by: turbonium1
originally posted by: Rob48
In what way? Everyone who matters already knows that they were genuine. The people giving them funding certainly know they were genuine. All the international organisations and scientists they collaborate with know.
We have already seen the landing sites from just 25km orbit. What tangible benefit would there be to wasting billions on a mission to photograph sites in close-up that we already have photos of (from the original missions) just to convince the tiny proportion of the population who don't believe? And who, in any case, have shown that no amount of evidence would change their mind?
So you think it's more beneficial to image the sites from 25km orbit, and show a few little specks and blobs?
Are you serious?
Close-up detailed images of the landing sites would allow scientists to study the effects of 40+ years in the lunar environment. Perhaps they'd see how micrometeorites shredded one flag, while all the other flags remained intact.
You can't do such analyses with your little spcks and blobs
It would also benefit by sparking public interest in further manned space exploration. Do you think people would get more excited by detailed, close-up images of an American flag on the moon, or seeing a little speck from orbit that they claim is the flag?
Come on, now. You're making up some ridiculous excuses to avoid the fact of the matter.