The Japanese launched Ikaros five years ago next week.
298 posts • joined 28 May 2008
Still undergoing test flights and already certified? Certified as what
Certified as a flying test prototype. Without certification you don't get off the ground.
under the nose cone is the complete exit and entrance hatch
There's also a side hatch on both versions of the Dragon.
My first thought was why not deploy the parachutes before dumping the trunk.
Because the capsule will be facing the wrong way and there would be a very high chance of the rigging getting tangled on the trunk leading to a Bad Day. Though I suppose if you've already needed to abort, getting the parachutes wrapped round the trunk would make it a Worse Day.
By one of those coincidences I had the radio going in my headphones mixed with the audio from the webcast. Just before SpaceX started their T-13 minute poll the radio started playing Public Service Broadcastings "Go!" so I had two teams 46 years apart polling.
Nicked from /., an unmanned Mercury abort comes down a similar distance offshore https://youtu.be/Vp9BnBDKa0s?t=5m55s
Mariner 9, one of the Viking orbiters and possibly a couple of Soviet orbiters are still whizzing round out there too. With no communications for decades their exact orbits are a matter for speculation.
There are a couple of extra ATV service modules, currently intended to be used on Orion test flights. The pressurised bits came from the Alenia production line which I think also makes the Cygnus pressurised container. A bodge job ATV might be possible in under a year, but you'd still need an Ariane 5 to launch it and the only way you'd free up one of them would be to pay a commercial payload a very large sum of money to delay...
It's still not over land. For a geo-sync launch there are two burns, the first one finishes 9 minutes or so after launch and puts everything in a more or less circular orbit, the second is 10 minutes or so later starting just before it crosses the equator to put the payload in the transfer orbit. You'd need to be roughly in Cameroon to stand a chance of seeing it.
Shirley if you're measuring height with Double Decker Buses you'd stack them on top of each other rather than bumper to bumper making it 13.2 to 19.8 ddbs?
Hmmm, Flanders and Swann seem to have omitted the height from the statistics in A Transport of Delight...
What success record did the Grasshopper and DC-X have when they started flying?
None. Which is why when they started flying they did so in the middle of big empty spaces with insufficient fuel or velocity to reach anywhere breakable. There's quite a bit of expensive and fragile kit hanging around the Cape that you don't want to land on top of...
If you dip the whole thing in salt water then you're committed to stripping the whole stage to components and rebuilding from scratch. Not exactly the route to cheap reusability.
So the longest ISS resident probably holds the record.
Valeri Polyakov on Mir actually, 437.7 days in one stretch.
Couple of still pictures on his Twitter feed now with the comment "Looks like Falcon landed fine, but excess lateral velocity caused it to tip over post landing"
Also "All we have right now is low frame rate video (basically pictures). Normal video will be posted when ship returns to port in a few days."
They drain the tanks immediately after an abort when it's an instantaneous launch window. Fuelling starts around 4 hours before a scheduled launch so they'll start refilling in about an hours time (just after 5pm Tuesday) for tonights attempt.
The MIL was 100yds (91.44m, 1.8osp, 9.92ddb) away, the range to the Armadillo is not given...
Well they're obviously doing something right, with 16 Falcon 9 launches in 4 years so far, and 10 more this year.
10 more scheduled, there's bound to be slippage on some of them unfortunately. On the other hand the two launch abort tests for the crew Dragon and the Falcon Heavy demo flight don't appear to be included in that count.
Lockheed and Boeing are also now talking about their ULA Atlas and Delta replacement heading towards reusability, although also going for the FUD about how many times a stage needs to fly before it's cheaper to reuse than expend. Interestingly they've got a press conference due half an hour before the Falcon launch...
Yay for Canada!
Just a warning, there's VAT to be added to the £2.99 so £3.59 total for UKians...
> man whose writing desk had 6 monitors on it
When asked in an interview "Why does your desk have six monitors?" he replied "Because I don't have room for eight"
That's the reason for the Stirling generator, much more efficient converting the heat to electricity but at the expense of having moving parts which might fail.
We may now have to wait until April for the next recovery attempt. There's a launch due on Feb 27th which is a heavy payload so won't have the fuel margin for a recovery attempt, and I believe the same applies to the Turkmensat launch due in late March. Jason 3 on March 31st is going up from Vandenberg which would probably need the "Of Course I Still Love You" to be ready, so it's the Dragon to the ISS currently due up on April 8th for the next try.
S'OK, they refered to it as an astrological first to make up for it...
Hold which scrubs the launch for tonight. Range tracking issue.
Ask again when Facebook starts exporting decent fortified wine...
Wouldn't a small drogue chute make sense
This is what the grid fins are for, with the added benefit over a chute of helping with the steering.
Wonder if it caught a landing leg on one of the containers at that corner and blow-torched the surrounding area with the engine as it tipped? That could lead to the pieces lying where they are on the deck.
They've got a pretty good idea of what will need to be checked and replaced from the Grasshopper tests. The first few stages to be recovered will be completely dismantled and inspected to confirm that, and to check what has been affected by the stresses of a full bore flight rather than the relatively gentle up and down of Grasshopper and its successors.
Actually the rest of the first stage is largely Ukrainian.
Suranne Jones? "I may not have always taken you where you wanted to go, but I always took you where you needed to be"
If you need to slow down enough to enter orbit when you get back to Earth, you have to haul the fuel to do that with you to Mars and back. You also need extra fuel to accelerate that fuel out of Mars orbit to get back, and extra fuel to decelerate both those quantities of fuel into Mars orbit when you get there, and still more to accelerate all three lots of fuel out of Earth orbit and towards mars in the first place.
Much less mass requirement to take your re-entry vehicle along with you, not bother with getting into Earth orbit when you get back, and use a beefy heat shield to re-enter directly.
Dump the fixed menu bar or if you won't get rid of it at least give it a permanent hide setting. The only thing it does is make you lose a line or two when you page down and breaks the reading flow as you jog back and forth.
"If you have to ask how much, you can't afford it"
Going through the belts is really a side issue, what they want to do is give the heat shield a good thrashing and for that the higher you go the faster the re-entry is. For LEO you're going around 17,500mph when you hit atmosphere, coming back from the moon or beyond it's more like 25,000mph.
That's Mr "I'm my own grandpa" Fry of course.
Not for a while, best displays seem to be a year or two after perihelion and at the moment the comet is around aphelion. Last perihelion was 1998 so watch the skies 2031-2034ish...
As it says, bits of the comet with a 747 to give an idea of scale.
Makes sense from the images. If you look at the picture of the incident, eg on http://www.space-travel.com/reports/Probe_of_US_spaceship_crash_may_take_year_999.html and now treat SS2 as being upside down and backwards you've got the engine still firing at the top and the tail booms deployed either side. The feathered configuration is supposed to hold the nose up during re-entry so the base of the ship is maximising the cross section, deploying while the engine is running is lilely to send you into a very tight loop the loop.
Because the console operators usually only have screenfuls of numbers to look at, all they see is that the information they're getting is very odd or has stopped.
The SpaceX one was a first stage problem. They lost an engine on the way up so the other 8 ran longer, that left everything in slightly the wrong position so they couldn't do the second burn after the Dragon separated to get the Orbcomm secondary payload in the right orbit.
First stage engine problems aren't unusual, but they frequently show up before the rocket has left the ground so everything gets shut down and can be fixed.
There was a Progress launch due around ten past seven this morning. They might just have had time to get a few copies of said Newspaper Shaped Object on board.
Not just the same as, they're actual engines built for the N1 before it was cancelled that have been in storage ever since. Another one exploded on the test stand recently.
They don't push at all, just move it out and let go. The attitude at release is carefully worked out so the Dragon can fire thrusters without the plumes hitting the station.
I've been trying to find out if it does Qi (or any other form of wireless) charging. It's so nice with my Mk II Nexus 7 to just drop it on the pad instead of having to fiddle with micro-USB late at night.
"Would work better with a more Donna-like character"
This. Much, much better.
>> Yup, second fittest assistant ever.
>>The fittest being another Louise, Jameson, playing the scantilly clad Leela.
> Sarah-Jane was the godess!
Bah, bunch of youngsters who never saw Wendy Padbury as Zoe the lot of you...
Although for the ISS you'd probably be better off 3d printing a small crossbow. You could print the bolts for it too and there would be less chance of putting a hole in a module when it goes off accidentally in the struggle.
Shirley a double brace is a mere four rather than eight?
brace noun (PAIR)
› [C] (plural brace) two things of the same type, especially two wild birds that have been killed for sport or food: a brace of pheasants
Randall Munroe, the *Hugo winning and* much-loved creator of awesome science webcomic XKCD
Time (http://xkcd.com/1190/) got him the Best Graphic Story award a couple of weeks ago.
0208 811 8181 was W12 8QT, though 01 811 8055 was the one true number for there...
Internally at TV Centre 4050 was the extension everyone called.