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General Discussion / Re: Richard Branson
« Last post by Obviousman on July 25, 2021, 04:24:08 PM »
SLF - Self Loading Freight

For those who might not be familiar with the phrase, this is commonly used by snotty flight attendants with attitude problems to express their contempt for the people who are paying their salaries.


And aircrew various when refering to pax (passangers).
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The Reality of Apollo / Re: Apollo 13 questions
« Last post by JayUtah on July 25, 2021, 12:45:41 PM »
Were the changes substantial to the spacecraft?

Not really, because as I go back to the original documents I discover my memory isn't correct.  The GSE was still able to supply a variety of voltages, both AC and DC, including the nominal 28 VDC that the tank's original design assumed.  So had they used 28 volts instead of 65 (not 60) volts to accelerate the detanking, they would have been fine.  Not all spacecraft systems were upgraded to 65 volts.  The possibility that a misconfigured GSE power supply could silently damage the spacecraft remained a serious concern, but the problem was addressed by changes both to the spacecraft systems and to the GSE, whichever was more straightforward in each case.
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General Discussion / Re: Richard Branson
« Last post by nikolai on July 25, 2021, 12:04:24 PM »
SLF - Self Loading Freight

For those who might not be familiar with the phrase, this is commonly used by snotty flight attendants with attitude problems to express their contempt for the people who are paying their salaries.
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General Discussion / Re: Richard Branson
« Last post by Obviousman on July 24, 2021, 09:41:23 PM »
There will have to be a change to the definitions for the award of astronaut wings, most likely to do with some professional qualifications and crew duties whilst aboard. The pilots would qualify but the SLF* would not.







SLF - Self Loading Freight
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General Discussion / Re: Richard Branson
« Last post by Jeff Raven on July 24, 2021, 03:51:35 PM »
Looks like the FAA have decided that the term "astronaut" refers to flight crew and not passengers.

Yup. And the timing was very pointed.  The passengers could still qualify for honorary wings, but not the full ones. From CNN:  The new order allows the agency to issue an honorary award to "individuals whose contribution to commercial human space flight merits special recognition." It's up to the sole discretion of FAA's associate administrator for commercial space transportation to determine who qualifies for the "honorary" astronaut wings.

The criteria for full wings are not very specific:  (In addition to the 50+ miles altitude) Commercial launch crew members must also demonstrate "activities during flight that were essential to public safety, or contributed to human space flight safety," an FAA spokesperson said, quoting the new order.   So, based on that, riding around on a joy ride wouldn't qualify, but what if they were also testing systems that were going to be used in the next generation of craft?  Would that be enough for the second criterion? Based on that one, how many of the mission specialists during the space shuttle years who were there for scientific research would still qualify? Same with ISS.  I don't even want to think about how they're going to decide the first one.
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The Reality of Apollo / Re: Apollo 13 questions
« Last post by bknight on July 24, 2021, 02:20:35 PM »
If the ground power was configured to 28 vdc would there have been any likely errors to an including the venting of O2 through the bent valve?

No.  The thermostat would have functioned as expected and prevented the heater from baking the tank.

Ironically the plethora of voltages used in the spacecraft and launch vehicle and the likelihood of human error in operating GSE connections was what motivated standardizing GSE DC voltage to 60 and validating the entire spacecraft to accept that voltage for direct DC connections.  It's not clear from my reading that the GSE could even have been configured to supply a lesser voltage.
Were the changes substantial to the spacecraft?
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General Discussion / Re: Richard Branson
« Last post by bknight on July 24, 2021, 11:48:00 AM »
Looks like the FAA have decided that the term "astronaut" refers to flight crew and not passengers.

Bureaucrats  ::)
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General Discussion / Re: What to do with an old computer
« Last post by smartcooky on July 24, 2021, 08:43:26 AM »
The 500 has been recapped, the 64 is fine, I have a problem finding a way to play the Intellvision new flatscreen TV's don't want to tune to it. The only other problem is my 1584S CBM monitor has bit the dust and I'm no wizz with monitors even though I did the revamp on the Amiga.
I'll have to see what state my old systems are in, but I might have to at least recap them.  They haven't been turned on in a long time!

Re the Intellivision, it's ages since I saw one, but from a quick google, if your has RCA connectors you can get an RCA to HDMI converter for a few quid which should do the job.  And as mentioned, I wouldn't go messing with the monitor as there's a lot of high voltage stuff in there, and I'm pretty experienced with electronic tinkering.


Yup. The LOPT (Line output transformer) of a colour TV/monitor can stick out 25KV. With that sort of voltage, you don't even have to touch it; it will jump out and get you  ... and it will do a lot more than just make your eyes water. 
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General Discussion / Re: What to do with an old computer
« Last post by molesworth on July 24, 2021, 05:08:25 AM »
The 500 has been recapped, the 64 is fine, I have a problem finding a way to play the Intellvision new flatscreen TV's don't want to tune to it. The only other problem is my 1584S CBM monitor has bit the dust and I'm no wizz with monitors even though I did the revamp on the Amiga.
I'll have to see what state my old systems are in, but I might have to at least recap them.  They haven't been turned on in a long time!

Re the Intellivision, it's ages since I saw one, but from a quick google, if your has RCA connectors you can get an RCA to HDMI converter for a few quid which should do the job.  And as mentioned, I wouldn't go messing with the monitor as there's a lot of high voltage stuff in there, and I'm pretty experienced with electronic tinkering.
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General Discussion / Re: Richard Branson
« Last post by Glom on July 23, 2021, 10:54:03 PM »
Looks like the FAA have decided that the term "astronaut" refers to flight crew and not passengers.
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