I was in Japan last week with my T-mobile iPhone. Yes, it is throttled that it takes long time to load things like satellite image on your map, but it is perfectly fast enough to play Pokemon-Go and FaceTime voice call.
I'm more curious of the structural integrity of everything else. How can they assure that structure is sound for relaunch? Can they convince the insurance company to not raise the premium to the point of canceling out the cost savings?
That would be hot for an aircraft, but it was the planned vertical speed profile for the rocket.
Wasn't it supposed to land at 5m/s? First stage is about 37m tall and it should take leisurely 5 - 6 seconds or so to finish the last rocket length, but in the video, it is finishing that in about 2.5 - 3 sec, coming in at least twice as too hot. Maybe they need to start the landing thrust several seconds earlier, assuming they have enough fuel left.
Your 2 pictures are about 5 miles apart. First one is that of Taro, and 2nd one is of Miyako.
Here is a good video describing Taro town. https://www.youtube.com/watch?....
a new scan technique using muons have shown the fuel is not in its place.
Hah??? The whole point of this technology was supposed to be able to locate where the fuels debris are so they can start planning the removal. They said it themselves.
But before those reactor cores can be removed, it is essential to locate where the debris has dropped inside the reactor.
So the technology didn't work. They just confirmed that the it is not in the core, which provide them with zero information to be able to move forward but they didn't say that and pretending it is some kind of achievement and not admitting the fact the they didn't achieve the prime objective of this exercise. Very typical of TEPCO. I hope they don't waste money repeating this to #2 and #3 to confirm that the fuels are not in place there either.
Lots more details describe in this article: DSCOVR Mission Updates. One interesting information is that landing burn in only 28 seconds. That's all it takes to slow down from the terminal velocity down to 0 while performing the final guiding maneuver to the bulls eye.
fly all the way back to the launch site (would seem to be alot of fuel) -
That was my original impression, that you have to continuously burning to actively control the fall. But I recently saw a number that Apollo style capsul's terminal velocity is something around 300 miles/h and they spend several minutes free falling after fireball decelleration. Note "free falling" in this context is different from physical definition of free falling and describe the falling at constant speed of terminal velocity. 300 miles/h is half as fast as horizontal speed of airliners, and comparing to 120 miles/h of skydiving of human body (I'm a skydiver), it is not very fast. So after the supersonic reentry, I assume first stage is already on the trajectory to free fall toward the landing pad only controlled by the fins without any fuel burn. I'm curious what is the terminal velocity of the falcon 9 first stage is, but with empty large volume with little fuel left, and engine cones facing down, I imagine it is not that fast. This phase of landing is abbreviated in their fancy CG, so I too also got impression that they burn fuel from pretty high up, but we also saw one chase plane video of first stage coming down through the clouds without burning any fuel and seems to be in stable free falling.
Well, Eskimos live in many different countries, but the article specifically says
Alaskan Eskimos. The last time I checked, Alaska is a state which belongs to U.S.
and they are subject to U.S. law. Eskimos pleaded with U.S. government to protect
their whaling rights, so U.S. government negotiated with IWC to allow for their
hunting.
I always find it interesting that while we aften say "native Americans" or "American indians",
"American" rarely accompany "Eskimos". I googled american-eskimos in google news and top 10
hits were all about american-eskimo dogs.
What revision of tzdata has this year's US change? Unfortunately tzdata tar ball doesn't come with
any Changelog file. It is not obvious me if my current version of tzdata on my system have the
change incorporated (tzdata2006g).
I like some of the feature of Youtube but I couldn't get the video
quality I wanted from my iMovie created videos. Here is the report
of my experiment I posted to Apple discussion forum (which sadly, nobody responded:-( )
Did they ever mentioned the standby battery life for incoming phone call?
Does 16 hours of audio only battery life equivalent to the standby time?
I would imagine that if you can play audio continuously for 16 hours,
you can be standing by for incoming call for quite a bit longer.
16 hours is great for iPod but it would be quite insufficent as a phone.
> Are there lots of stops?
There are currently 21 stations without the
final section north of Hachinohe which is
under construction. Not all trains stop at
all the stations, but I expect the fastest
train to stop at least 5 or 6 of them
(up to the haggling of the local politicians
along the line:-)
http://en.wikipedia.org/wiki/Tohoku_Shinkansen
Yahoo MAP is a good way to find hotspots.
A while a ago I noticed that Panera's
hotspots were not listed there. I emailed
their marketing department (from their hotspot:-) to have their stores
listed. They said they'll
look into it but I see that they are still
not there. Now that I learned Yahoo's hotspot
directory is provided by
a company called JiWire, I
should drop them a mail again.
Is this an implementation of Mobile Ad-hoc
Networks (manet)? An IETF working group has been around for a
while. If I remember correctly, original motivation of the group was to create dynamic routing technology for the battle field communication.
Good job on the analysis. I wonder if there is more authoritative way to verify the creation date of an 8XX number.
Anyway, I mailed the link to your comment to Mr. Kopel (I hope you don't mind) suggesting that he should take out that claim unless he can somehow verify that the number existed when the movie was created. Hopefully this will be corrected shortly.
*finally, not setting minimum fuel level for takeoff
What really got me was that they even didn't have a way to measure how much fuel was left and now they are looking for a good sensor to do so. Since they chose to do powered landing, fuel is essential to the survival of this craft and the passengers, and it seems like a reasonable precaution to keep track of how much of that is left.
It didn't bother me if it was in the plan for the future rev of the craft and the unfortunate sequence of event exposed the problem earlier than they hoped for but it seems that they didn't think of the issue before this crash.
I always thought Google News is a subset of Google, but inspired by this article, I did a little experiment and proved otherwise.
To get to a particular article in yesterdays NY Times, I did:
"a specific name in that article" site:nytimes.com
in Google News and it returned me that specific article. But then, I presed "Web" search for the same phrase and it didn't return that article but a couple of older articles with the same name (I guess those were from the time before the Google News started).
Slashdot Mirror
I was in Japan last week with my T-mobile iPhone. Yes, it is throttled that it takes long time to load things like satellite image on your map, but it is perfectly fast enough to play Pokemon-Go and FaceTime voice call.
It is reused as an historical memorabilia.
I'm more curious of the structural integrity of everything else. How can they assure that structure is sound for relaunch? Can they convince the insurance company to not raise the premium to the point of canceling out the cost savings?
3M Novec 1230 Fire Protection Fluid Extinguishing
Immersion Cooling with 3M(TM) Novec(TM) Engineered Fluids
That would be hot for an aircraft, but it was the planned vertical speed profile for the rocket.
Wasn't it supposed to land at 5m/s? First stage is about 37m tall and it should take leisurely 5 - 6 seconds or so to finish the last rocket length, but in the video, it is finishing that in about 2.5 - 3 sec, coming in at least twice as too hot. Maybe they need to start the landing thrust several seconds earlier, assuming they have enough fuel left.
Your 2 pictures are about 5 miles apart. First one is that of Taro, and 2nd one is of Miyako. Here is a good video describing Taro town. https://www.youtube.com/watch?....
a new scan technique using muons have shown the fuel is not in its place.
Hah??? The whole point of this technology was supposed to be able to locate where the fuels debris are so they can start planning the removal. They said it themselves.
http://www.tepco.co.jp/en/pres...
But before those reactor cores can be removed, it is essential to locate where the debris has dropped inside the reactor.
So the technology didn't work. They just confirmed that the it is not in the core, which provide them with zero information to be able to move forward but they didn't say that and pretending it is some kind of achievement and not admitting the fact the they didn't achieve the prime objective of this exercise. Very typical of TEPCO. I hope they don't waste money repeating this to #2 and #3 to confirm that the fuels are not in place there either.
Lots more details describe in this article: DSCOVR Mission Updates. One interesting information is that landing burn in only 28 seconds. That's all it takes to slow down from the terminal velocity down to 0 while performing the final guiding maneuver to the bulls eye.
fly all the way back to the launch site (would seem to be alot of fuel) -
That was my original impression, that you have to continuously burning to actively control the fall. But I recently saw a number that Apollo style capsul's terminal velocity is something around 300 miles/h and they spend several minutes free falling after fireball decelleration. Note "free falling" in this context is different from physical definition of free falling and describe the falling at constant speed of terminal velocity. 300 miles/h is half as fast as horizontal speed of airliners, and comparing to 120 miles/h of skydiving of human body (I'm a skydiver), it is not very fast. So after the supersonic reentry, I assume first stage is already on the trajectory to free fall toward the landing pad only controlled by the fins without any fuel burn. I'm curious what is the terminal velocity of the falcon 9 first stage is, but with empty large volume with little fuel left, and engine cones facing down, I imagine it is not that fast. This phase of landing is abbreviated in their fancy CG, so I too also got impression that they burn fuel from pretty high up, but we also saw one chase plane video of first stage coming down through the clouds without burning any fuel and seems to be in stable free falling.
SpaceX would use portable “port-o-potties” during landing operations.
Sadly, this is the first domestic order for the 747-8i, and could be the last one.
http://www.space.com/missionlaunches/sfn-htv1-countdown-status.html
> ... the people who killed the whale were Eskimos
Well, Eskimos live in many different countries, but the article specifically says Alaskan Eskimos. The last time I checked, Alaska is a state which belongs to U.S. and they are subject to U.S. law. Eskimos pleaded with U.S. government to protect their whaling rights, so U.S. government negotiated with IWC to allow for their hunting.
I always find it interesting that while we aften say "native Americans" or "American indians", "American" rarely accompany "Eskimos". I googled american-eskimos in google news and top 10 hits were all about american-eskimo dogs.
What revision of tzdata has this year's US change? Unfortunately tzdata tar ball doesn't come with any Changelog file. It is not obvious me if my current version of tzdata on my system have the change incorporated (tzdata2006g).
Export option for highest quality posting to Google video and YouTube
They better do the switching after Youtube's quality is equivalent to GV. Also download feature is important for me too.
Does 16 hours of audio only battery life equivalent to the standby time? I would imagine that if you can play audio continuously for 16 hours, you can be standing by for incoming call for quite a bit longer.
16 hours is great for iPod but it would be quite insufficent as a phone.
> Are there lots of stops? There are currently 21 stations without the final section north of Hachinohe which is under construction. Not all trains stop at all the stations, but I expect the fastest train to stop at least 5 or 6 of them (up to the haggling of the local politicians along the line :-)
http://en.wikipedia.org/wiki/Tohoku_Shinkansen
Considering last completed mission was in November 2002, it must be a couple years behind from the schedule at that time.
Yahoo MAP is a good way to find hotspots. A while a ago I noticed that Panera's hotspots were not listed there. I emailed their marketing department (from their hotspot :-) to have their stores
listed. They said they'll
look into it but I see that they are still
not there. Now that I learned Yahoo's hotspot
directory is provided by
a company called JiWire, I
should drop them a mail again.
Extra point if you can identify who it is.
Is this an implementation of Mobile Ad-hoc Networks (manet)? An IETF working group has been around for a while. If I remember correctly, original motivation of the group was to create dynamic routing technology for the battle field communication.
Anyway, I mailed the link to your comment to Mr. Kopel (I hope you don't mind) suggesting that he should take out that claim unless he can somehow verify that the number existed when the movie was created. Hopefully this will be corrected shortly.
What really got me was that they even didn't have a way to measure how much fuel was left and now they are looking for a good sensor to do so. Since they chose to do powered landing, fuel is essential to the survival of this craft and the passengers, and it seems like a reasonable precaution to keep track of how much of that is left.
It didn't bother me if it was in the plan for the future rev of the craft and the unfortunate sequence of event exposed the problem earlier than they hoped for but it seems that they didn't think of the issue before this crash.
"a specific name in that article" site:nytimes.com
in Google News and it returned me that specific article. But then, I presed "Web" search for the same phrase and it didn't return that article but a couple of older articles with the same name (I guess those were from the time before the Google News started).