RF Cafe Software
About RF Cafe
1996 - 2022
BSEE - KB3UON
RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The Internet was still largely an unknown entity at the time and not much was available in the form of WYSIWYG ...
All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.
My Hobby Website:
Try Using SEARCH
to Find What You Need.
There are 1,000s of Pages Indexed on RF Cafe !
Air & Space magazine has an article in the September 2015 issue that discusses medical issues for consideration during extended stays in space - whether it be in orbit around Earth or during a journey to or from the moon or a planet. Believe it or not, to this day there is no practical method of performing invasive surgery in zero gravity conditions. The problem is controlling escaping blood. Even inside a glove box type contraption ('hermetic surgery') the free-floating blood interferes with an operation enough to jeopardize procedures. Even orthoscopic methods are difficult because at some point blood tends to escape the body.
As part of planning for every conceivable emergency, NASA (USA), ESA (EU), RFSA (Russia), and CNSA (China) have agreed that the only reasonable way to deal with an astronaut who has assumed space temperature is to do the equivalent of a burial at sea - launch the body into a separate orbit, where at some point it will create a bright streak across the sky. The story didn't mention whether there would be a transponder of some sort onboard to track the body's progress. Would such a corpse be considered 'space junk' like all the uncountable man-made metal and plastic parts circling the globe today? Fortunately, such a situation has not occurred, but eventually it will. Gauging public opinion on the agencies' actions will be interesting when the time comes.
Below is a photo of Russian doctor Leonid Rogovoz removing his own appendix during an isolated Antarctic mission where he could not get back home for proper treatment. The scenario reminds me of a scene in the movie "Master and Commander: The Far Side of the World" (one of my favorite movies, BTW) where the ship's doctor operated on himself, without anesthesia, to remove a musket ball from under his ribs. This gives a whole new perspective to the words "Physician, heal thyself."
Since RF Cafe is an electronics-centric website, I would be amiss if not providing some tidbit on soldering in zero gravity conditions. The animated GIF below shows solder flux dancing around the end of a wire while in the International Space Station (ISS). It comes from a NASA website reporting: "There's nothing routine about working in space, as astronaut Mike Fincke found out recently when he did some soldering onboard the International Space Station."
Posted August 24, 2015