The protocols for space walks are also very similar to deep sea divers. The suits have an internal air pressure lower than the space station (for many good reasons). In order to avoid getting symptoms similar to the bends, they have to spend several hours pre-breathing pure oxygen etc. This means they can't just put on a suit and go outside in an emergency - it takes planning and time.
The ISS is pressurized to match Earth at sea level (it's designed for long-term habitation), and the pressurized modules are built to withstand that pressure.
Making a spacesuit that could handle the same pressure would require it to be much heavier and more rigid. Cutting the pressure makes it much easier to work in.
Quote: After pumping up his pressure suit to three and one half pounds of pressure per square inch, "the suit took on a life of its own and became so stiff that it didn't want to bend at all." He struggled to move inside his stiff suit.
The ustream link seems to be the one that works on Android. The HTML 5 one just tells me that I should be using an iOS device.
Does anyone know what technology is being used in the suit cameras and why it is so different from the ISS cameras? The former seem to have far greater interference.
I don't know the details and also I don't know to which ISS cameras you compare, but those suit cameras have to be robust, flexible, likely low power consuming and bring a good reception. The interference with this analog technology isn't that bad. A human viewer can filter those troubles in real time. Compared to a digital video stream, we would have had green blocks, frozen images, delays etc. at least when using the same bandwidth. There could be improvements for sure, but maybe it isn't worth the effort.
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[ 5.5 ms ] story [ 45.8 ms ] threadhttp://www.youtube.com/watch?v=ufsrgE0BYf0
Interesting that they hook-up the "broken" module back into the system for diagnostics.
Making a spacesuit that could handle the same pressure would require it to be much heavier and more rigid. Cutting the pressure makes it much easier to work in.
This 4 minute 1987 NASA video explains suit history: https://www.youtube.com/watch?v=X4WK6IUQ7QU
This page explains the protocol and over two hours of pre-breathe: http://spaceflight.nasa.gov/station/eva/outside.html
This section (4th paragraph) explains what happens when a space suit is pressurized: http://en.wikipedia.org/wiki/Gemini_9A#Objectives
Quote: After pumping up his pressure suit to three and one half pounds of pressure per square inch, "the suit took on a life of its own and became so stiff that it didn't want to bend at all." He struggled to move inside his stiff suit.
Does anyone know what technology is being used in the suit cameras and why it is so different from the ISS cameras? The former seem to have far greater interference.