Support the Arctic Sea Ice Forum and Blog

Recent Posts

Pages: 1 ... 7 8 [9] 10
81
The politics / Re: Joe Biden
« Last post by blumenkraft on Today at 04:55:26 PM »
Haha, Walrus, i remember you kept saying how Bernie is too old for the job during the primaries. And now this? Please...  ;D
82
The politics / Re: Elections 2020 USA
« Last post by Bruce Steele on Today at 04:45:46 PM »
Freegrass, Once upon a time Reagan “ was the best man to destroy America “ . The right wing still considers him a hero however.
 Trump has done plenty of damage to most of us here but somehow he still gets good ratings on the economy. The rich still like him and they will vote for him just like last time. Our national  debt has been a gift from the poor of the future to the rich of today.
 I voted Bernie in the primary because I thought the youth vote mattered. I am an old white guy however and I will have no problem voting for a Biden/Harris ticket. Lest the left is willing to perform another circular shooting squad like in 2016 it would behoove Dems and liberals alike to vote for the only chance we have to replace Trumputin with representatives that will at least entertain , and hopefully incorporate, the new left in decision making.
 If the left repeats the dumb decision to sit on their hands and hands this election over to the
Neonazi  again then the left deserves the knock on the door at midnight that will soon follow.
83
The politics / Re: Joe Biden
« Last post by The Walrus on Today at 04:43:59 PM »
Lets see if this coincides with the ages of past 7 presidents upon their deaths:

Ford:  left office at 63, dies at 93
Carter:  left office at 56, still kicking at 95
Reagan:  left office at 77 (days before his 78th birthday), died at 93
Bush Sr.:  left office at 68, died at 94
Clinton:  left office at 54, still alive at 73
Bush Jr.:  left office at 62, also 73
Obama:  left office at 55, currently 59

None of them before the age of 93.  Even Reagan, who some consider incapacitated at the end of his term, lived another 16 years upon leaving office.  Granted, retirement is much easier on them, but their lifestyle prior to the presidency was not extremely harsh.  My bet is that Biden lives well past 2025 and most likely into the 2030s.
84
Arctic sea ice / Re: The 2020 melting season
« Last post by ArcticMelt2 on Today at 04:43:01 PM »
https://twitter.com/ECCC_CIS/status/1293874963045384192

Quote
#Seaice coverage in the eastern Canadian #arctic is at it’s 3rd lowest level in the last 40 years for the week of August 13th.   Significant ice movement in the archipelago during the last week.

85
Consequences / Re: COVID-19
« Last post by harpy on Today at 04:40:06 PM »
Quote
Also people who don't want to lose respiratory function should try to avoid.

Coronavirus causes long term brain injury as well.  So that warning should be extended to anyone who needs their brain to function.

For example:

https://www.sciencedaily.com/releases/2020/06/200618111009.htm

it is evident that an increase in one of the biomarkers took place even with moderate COVID-19 .... This marker, known as GFAP (glial fibrillary acidic protein), is normally present in astrocytes, a star-shaped neuron-supportive cell type in the brain, but leaks out in the event of astrocytic injury or overactivation.
86
The rest / Re: SpaceX
« Last post by Sigmetnow on Today at 04:38:40 PM »
Waiting for Eric Berger to write an article….

Starship skeptics
Quote
Eric Berger (@SciGuySpace) 8/11/20, 2:17 PM
After speaking to a few leaders in the traditional aerospace community it seems like a *lot* of skepticism about Starship remains post SN5.  Now, [SpaceX has] got a ways to go. But if your business model is premised on SpaceX failing at building rockets, history is against you.

< Can you go into more detail about their worries? Is it just generic "new designs are always harder than they look" stuff, or is it something specific about the Starship architecture?
Eric Berger:  Everything from "They shouldn't be blowing up that many tanks" to "It's a stunt" to "they're not close to solving the technical problems."

Everyday Astronaut: So wait. [SpaceX is] already the cheapest, one of the most reliable rides to space with an increasing cadence & experience. They could ride the F9 / FH wave for 10+ years with out touching anything & take the market share. Who honestly doubts they won’t make progress w/ Starship
… As in who cares if starship never even does anything but blow up for the next 5 years and then gets canned... F9 / FH are a decade ahead of the competition already! They could scratch further advances entirely and still be a leader.

Nathan Gilmore: In my MBA we studied Kodak, IBM, BlackBerry, few others about failure to recognize but also "acknowledge" threats to their business. I suspect twenty years from now, students will study aerospace industry and how they did not see SpaceX for the threat they truly are.
< No doubt in my mind this will happen. Worst case scenario Starship isn't operational until 2031, most likely it will come into full operation by 2026, at that point it's game over for old space.

< A smarter business model might be making things that can be lifted inexpensively in those rockets.
Susan Witts:  Well, that IS an interesting point. If I can make my satellites out of steel and off-the-shelf modules, with a 3-ton impact shield and a lifetime's-worth of propellant, maybe I can out-craft my competitors with their expensive bespoke every-kilo-counts ultra-engineering?

Tony Tran:
1. Reusability is impossible
2. Reusability is unprofitable
3. Big Fat Steel rocket can't fly
4. Orbital refueling is impossible
5. You can't build a colony on Mars

Neotopiaman:  Most are so behind, it's all they have...
Starship works, then expendable rockets very soon become a rounding error in the share of tonnage to orbit.

—-
Quote
Eric Berger (@SciGuySpace) 8/12/20, 11:02 AM
Here's some grade-A trolling of Dmitry Rogozin by a priest from Siberia, Father Aleksandr Mikushin.

“May God the Merciful bless you [Elon Musk] and your employees for continued success in the space industry."
ura.news/news/1052444726

Mikushin continues:

"And please send some of your company’s specialists to Russia. May they teach the staffers at the Salyut Construction Bureau how to build re-usable booster stages."

   —-
< Fun fact, so when a colony is built, the colony becomes part of the diocese the ship departed from.
So, the Moon colony will likely fall under the Archdiocese of Orlando.
Which will make it the largest diocese in the Solar System.
<< But if it's a Starship launched from Texas, different diocese.
https://twitter.com/sciguyspace/status/1293563611772854272
87
The rest / Re: SpaceX
« Last post by Sigmetnow on Today at 04:30:34 PM »
Starship SN6 - to the launch pad
Quote
Brady Kenniston (@TheFavoritist) 8/11/20, 11:20 PM
Starship SN6, in preparation for a brand new test campaign, rolls to the pad to be proofed, static fired, and hopped. If successful, SN6 will become the second, full scale, prototype to fly.

Video and Pictures from Mary (@BocaChicaGal).
https://twitter.com/thefavoritist/status/1293386946874572800
SpaceX Boca Chica - Starship SN6 rolls to the pad to be proofed, fired, and flown
➡️https://www.youtube.com/watch?v=BZyZjqGgET8

——
Quote
Chris B - NSF (@NASASpaceflight) 8/12/20, 6:15 PM
Starship SN6 has been placed on the launch mount!

Thanks to Mary (@BocaChicaGal) for being out there all day to catch this via livestreaming.
Securing now happening: youtube.com/watch?v=U5n3yV…
https://twitter.com/nasaspaceflight/status/1293672360277663748
26 sec webcast clip at the Twitter link.
88
Policy and solutions / Re: Nuclear Power
« Last post by blumenkraft on Today at 04:24:53 PM »
Any factcheck on those prices?

Well, if you include the trillions and trillions it costs to store and protect nuclear waste over generations, these calculations (however (in)accurate they are - i didn't even check) are just ridiculous.
89
The rest / Re: SpaceX
« Last post by Sigmetnow on Today at 04:23:11 PM »
Starship Thermal Protection System (TPS)
Quote
< Wow!! Are these different heat shields on each vehicle? Are you still experimenting with materials/welding technique for the tiles?
Elon Musk (@elonmusk) 8/11/20, 2:19 PM
Same hex tiles, slightly different mounting method. Need bigger sections of tiles to see how they hold up with cryo shrinkage, pressure expansion & body bending.
https://twitter.com/elonmusk/status/1293250823296884746

—-
Quote
Chris B - NSF (@NASASpaceflight) 8/10/20, 10:55 PM
Why Starships SN5 and SN6 prepare for a potential hop tag team test campaign, a sign of the future was seen in the form of TPS installation, suitably provided in the pattern of an X.
Video and Pictures from Mary (@BocaChicaGal). Edit: @theoripper.
➡️youtu.be/73xYM5PLPow
https://twitter.com/nasaspaceflight/status/1293018173269250050
Screencaps below.
90
The rest / Re: SpaceX
« Last post by Sigmetnow on Today at 04:18:19 PM »
Falcon and Dragon: reuse
Quote
Ken Kremer (@ken_kremer) 8/12/20, 9:29 AM
All legs up !! Finally on the third try with more fits and starts and crane crew up close intervention on jig lifts the 4th (r) landing leg was fully retacted flush against this sooty but superb B1051.5 5x launched/landed 1st stage @PortCanaveral . #SpaceX #Stalink
https://twitter.com/ken_kremer/status/1293540189382549506
Photo below.

——
Back at Cape Canaveral, SpaceX’s Crew Dragon capsule preps for next mission
August 12, 2020 Stephen Clark
Quote
“The capsule is designed for five to 10 missions,” said Gwynne Shotwell, SpaceX’s president and chief operating officer. “We’ll have to see how things work out after we examine the capsule when it gets back to port and back to the Cape to our facilities there, but based on the telemetry and any visible indications that we’ve had so far, the vehicle looks like it’s in really good shape.”

Steve Stich, manager of NASA’s commercial crew program, said SpaceX’s proposal to reuse the Crew Dragon spacecraft “looked like it was a reasonable thing to do.”

“I think part of the question was how long does it take refurbish the vehicle,” Stich said. “It takes about four months or so. We have a lot of margin getting to the flight in the spring timeframe for Crew-2. The vehicle … as gets back to Area 59 at the Cape, it’ll start going through its maintenance.”

Stich said NASA will follow along with SpaceX’s maintenance, “just to make sure that there’s nothing untoward.” …
https://spaceflightnow.com/2020/08/12/back-at-cape-canaveral-spacexs-crew-dragon-capsule-begins-preps-for-next-mission/
Pages: 1 ... 7 8 [9] 10