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Sounds like an idiot to me. Wouldn't surprise me to find he has killed himself and probably several others trying to get the attention he obviously craves so badly.
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Videos from youtube you wish to share.
- Thread starter RedCowboy
- Start date
RB astro
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You're probably right Paul, he does take chances.
:tsk:
:tsk:
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iPhone Magic Tricks, Some are easier than the others but all of them are pretty tricky.....
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That Neisat is a clueless Drone safety moron...:scowl:
He files wherever he wants illegally and seems
to get away with it... He is definitely not a
good example for new RC pilots..
I see him just as another Attention Whore... IMO
Just like any Attention Whore... he doesn't
impress me at all...
Jerry
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The trouble with pressurized suits at high altitudes is they tend to blow up due to the lack of pressure outside. I don't think the astronauts use much pressurization for that reason. Wasn't it the Russians who found that a pressurized suit made it impossible to move about?
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Of course. But, I think it was the Russians who found that pressurizing to 15 lbs/ inch^2 caused the suit to balloon, so they decreased it by a lot.
diachi
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Yup, they operate at lower pressures. Probably with increased oxygen I'd imagine. Even then they are hard to move around in.
RB astro
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This is true Jerry, I can't argue with that.
I wouldn't categorise him as narcissistic per se
And yes he does endanger the hobby by flying drones in places where he shouldn't.
When I first started watching his drone vids I thought he had permission to fly in NYC.
It wasn't until later that I found out he doesn't.
:tsk:
From: Space Shuttle Operational Flight Rules https://www.jsc.nasa.gov/news/columbia/fr_generic.pdf
NASA - JOHNSON SPACE CENTER
FLIGHT RULES
VOLUME A
06/20/02
FINAL AEROMEDICAL
A13-53
MINIMUM PPO2 CONSTRAINTS (CONTINUED)
ONE-GAS ENVIRONMENT (EMU) - IF THE PRESSURE IN THE SUIT FALLS
BELOW 3.15 (3.3) PSI, THE EVA CREWMEMBER WILL ABORT THE EVA.
®[050400-7197A]
At 92 percent O2 , 3.15 (3.3) psia corresponds to a pressure altitude of 8000 feet and the rationale of
paragraph A.1 applies. Exhaled nitrogen from the crewmember dilutes the oxygen atmosphere in the suit
to 92 percent.
®[050400-7197A]
From: https://space.stackexchange.com/questions/13331/why-is-the-emu-space-suit-pressurized-to-4-3-psi-specifically
"The Shuttle extravehicular mobility unit (EMU) has an operating pressure of 4.3 psi (30 kPa) and the Shuttle crew escape/launch/entry suits operates at a maximum of 3.5 psi (24 kPA). All Russian spacesuits, in comparison, operate at 5.8 psi (40kPa) to minimize or avoid decompression sickness or other risks.
U.S. Studies have indicated that people could rapidly decompress from 14.7 psi (1 atm) to 8pis (55 kPa) with minimal risk. Similar Russian studies viewed decompression sickness risk slightly differently. From 14.7 psi, a russian suit pressure of 5.8 psi (40 kPa) is judged to be sufficient to avoid decompression sickness after half and hour of breathing pure oxygen, which is approximately how long it takes to perform a suit checkout before going out to do an extravehicular activity. As a result, all Russian spacesuits feature a 5.8 psi operating pressure.
Humans require environmental parameters to be within prescribed limits for comfort and to effectively perform work. One significant parameter is oxygen concentration. In a sea level atmosphere of 14.7 psia, the oxygen partial pressure is 3.08 psia. This results in an oxygen partial pressure with the alveoli of the lungs of 2.0 psia. NASA selected this as the lower limit of alveolar pressure for nominal human space operations. To maximize spacesuit joint mobility and to minimize leakage and loads of the pressure suit, spacesuits are designed to operate at the lowest pressure consistent with other requirements. Hence all spacesuits systems provide a breathing atmosphere of 100% oxygen (discounting small amounts of carbon dioxide and water vapor). However, because breathing efficiency decreases as pressure decreases, the normal operating pressure for U.S. spacesuits in the 1960s and early 1970s was established at 3.7psi."
There was a competitive review between systems and in February 1990 the decision was made to use 4.3 psi. The main reasons were to be able to support both exrtavehicular activity (EVA) and provide more effective crew escape and survival in intravehicular emergencies."
NASA - JOHNSON SPACE CENTER
FLIGHT RULES
VOLUME A
06/20/02
FINAL AEROMEDICAL
A13-53
MINIMUM PPO2 CONSTRAINTS (CONTINUED)
ONE-GAS ENVIRONMENT (EMU) - IF THE PRESSURE IN THE SUIT FALLS
BELOW 3.15 (3.3) PSI, THE EVA CREWMEMBER WILL ABORT THE EVA.
®[050400-7197A]
At 92 percent O2 , 3.15 (3.3) psia corresponds to a pressure altitude of 8000 feet and the rationale of
paragraph A.1 applies. Exhaled nitrogen from the crewmember dilutes the oxygen atmosphere in the suit
to 92 percent.
®[050400-7197A]
From: https://space.stackexchange.com/questions/13331/why-is-the-emu-space-suit-pressurized-to-4-3-psi-specifically
"The Shuttle extravehicular mobility unit (EMU) has an operating pressure of 4.3 psi (30 kPa) and the Shuttle crew escape/launch/entry suits operates at a maximum of 3.5 psi (24 kPA). All Russian spacesuits, in comparison, operate at 5.8 psi (40kPa) to minimize or avoid decompression sickness or other risks.
U.S. Studies have indicated that people could rapidly decompress from 14.7 psi (1 atm) to 8pis (55 kPa) with minimal risk. Similar Russian studies viewed decompression sickness risk slightly differently. From 14.7 psi, a russian suit pressure of 5.8 psi (40 kPa) is judged to be sufficient to avoid decompression sickness after half and hour of breathing pure oxygen, which is approximately how long it takes to perform a suit checkout before going out to do an extravehicular activity. As a result, all Russian spacesuits feature a 5.8 psi operating pressure.
Humans require environmental parameters to be within prescribed limits for comfort and to effectively perform work. One significant parameter is oxygen concentration. In a sea level atmosphere of 14.7 psia, the oxygen partial pressure is 3.08 psia. This results in an oxygen partial pressure with the alveoli of the lungs of 2.0 psia. NASA selected this as the lower limit of alveolar pressure for nominal human space operations. To maximize spacesuit joint mobility and to minimize leakage and loads of the pressure suit, spacesuits are designed to operate at the lowest pressure consistent with other requirements. Hence all spacesuits systems provide a breathing atmosphere of 100% oxygen (discounting small amounts of carbon dioxide and water vapor). However, because breathing efficiency decreases as pressure decreases, the normal operating pressure for U.S. spacesuits in the 1960s and early 1970s was established at 3.7psi."
There was a competitive review between systems and in February 1990 the decision was made to use 4.3 psi. The main reasons were to be able to support both exrtavehicular activity (EVA) and provide more effective crew escape and survival in intravehicular emergencies."
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This video from youtube,about a powerful laser pointer
https://youtu.be/gVjntaT1iUg
https://youtu.be/gVjntaT1iUg
diachi
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He started a thread asking for advice on purchasing high power pointers and had a link to Luck Lasers there too. I pointed him toward laserpointerstore.com. Maybe it was just a way to push Luck Lasers on the LPF. Hadn't really thought of that back then.
Diachi got me thinking..
Yup..him or someone did the same claiming fame for "LuckLaser" under a different but simular style username maby 3 months back..I believe EP closed a few threads quickly
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I do see these cheap Chinese laser pointer sellers opening accounts here to push their crap on unsuspecting newcomers. I hate to see it as it looks like we all approve of this kind of thing.
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The Video is not very interesting....
No actual power tests.. :wtf:
I mean.... Come on... Is that a shill
for them or what...
Jerry
Lucklaser SPAM promo?
ExactlySo, how are you related to Lucklaser?
I remember that too--it was deleted by EPDiachi got me thinking..
Yup..him or someone did the same claiming fame for "LuckLaser" under a different but simular style username mayby 3 months back..I believe EP closed a few threads quickly
Is typical of them, yes.
Seems to be just another promo SPAM for the Chinese reseller "lucklaser" that misrepresents products hoping to resell to people who don't know any better.
Anytime I see another one of these "lucklaser" related posts I tell people to avoid/not buy from "lucklaser"
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