Donate Bitcoin

Donate Paypal


PeakOil is You

PeakOil is You

SpaceX

A forum for discussion of regional topics including oil depletion but also government, society, and the future.

Re: SpaceX

Unread postby asg70 » Sat 24 Feb 2018, 11:49:14


BOLD PREDICTIONS
-Billions are on the verge of starvation as the lockdown continues. (yoshua, 5/20/20)

HALL OF SHAME:
-Short welched on a bet and should be shunned.
-Frequent-flyers should not cry crocodile-tears over climate-change.
asg70
permanently banned
 
Posts: 4297
Joined: Sun 05 Feb 2017, 14:17:28

Re: SpaceX

Unread postby asg70 » Tue 10 Apr 2018, 15:52:18

SpaceX not to blame for Zuma failure. Just in time for PStarr to resume his heckling.

BOLD PREDICTIONS
-Billions are on the verge of starvation as the lockdown continues. (yoshua, 5/20/20)

HALL OF SHAME:
-Short welched on a bet and should be shunned.
-Frequent-flyers should not cry crocodile-tears over climate-change.
asg70
permanently banned
 
Posts: 4297
Joined: Sun 05 Feb 2017, 14:17:28

Re: THE Laws of Thermodynamics Thread (merged)

Unread postby radon1 » Mon 26 Aug 2019, 18:30:51

The advantage of solid fueled rockets is a much greater safety and cheaper maintenance. The disadvantage is a significant loss in maneuverability and precision as the thrust cannot be managed actively.
radon1
Intermediate Crude
Intermediate Crude
 
Posts: 2053
Joined: Thu 27 Jun 2013, 06:09:44

Re: THE Laws of Thermodynamics Thread (merged)

Unread postby GHung » Mon 26 Aug 2019, 19:53:15

radon1 wrote:The advantage of solid fueled rockets is a much greater safety and cheaper maintenance. The disadvantage is a significant loss in maneuverability and precision as the thrust cannot be managed actively.


Experience with the Shuttle program showed that solid rocket booster reuseability was problematic and not cost effective. SpaceX has essentially changed the game for costs per Kg to orbit and is still making great progress. LOX and methane are cheap, plentiful, and SpaceX fuel costs are ridiculously low compared to other platforms. Turn-around time for their Block 5 Falcon 9 first stage is days to a couple of weeks. Blue Origin and others are following suit but find themselves playing catch up.
Blessed are the Meek, for they shall inherit nothing but their Souls. - Anonymous Ghung Person
User avatar
GHung
Intermediate Crude
Intermediate Crude
 
Posts: 3088
Joined: Tue 08 Sep 2009, 16:06:11
Location: Moksha, Nearvana

Re: THE Laws of Thermodynamics Thread (merged)

Unread postby radon1 » Tue 27 Aug 2019, 08:51:18

Liquid rocket fuels have historically been lethally poisonous and quickly vaporizing, and thus required regular re-fueling with lots of special equipment at the stationary silos. Possibly, this has changed now.
radon1
Intermediate Crude
Intermediate Crude
 
Posts: 2053
Joined: Thu 27 Jun 2013, 06:09:44

Re: THE Laws of Thermodynamics Thread (merged)

Unread postby dissident » Tue 27 Aug 2019, 14:17:06

radon1 wrote:Liquid rocket fuels have historically been lethally poisonous and quickly vaporizing, and thus required regular re-fueling with lots of special equipment at the stationary silos. Possibly, this has changed now.


You are implicitly talking about hydrazine. But the point of using this toxic fuel was precisely to not have to refuel ICBMs all the time. This liquid fuel could sit inside the silo ICBM tanks for decades. By contrast cryogenic fuels such as LOX and LH cannot be used until just before the rocket flight. This is especially true of LH since it leaks like there is no tomorrow through nanofractures and even "tight" valves. Other gases do not have this problem.

Ilon Musk is a snake oil salesman and all the focus this showboater gets is unwarranted. I would rather pay attention to Blue Origin.
dissident
Expert
Expert
 
Posts: 6354
Joined: Sat 08 Apr 2006, 03:00:00

Re: THE Laws of Thermodynamics Thread (merged)

Unread postby GHung » Tue 27 Aug 2019, 18:44:35

dissident wrote:
radon1 wrote:Liquid rocket fuels have historically been lethally poisonous and quickly vaporizing, and thus required regular re-fueling with lots of special equipment at the stationary silos. Possibly, this has changed now.


You are implicitly talking about hydrazine. But the point of using this toxic fuel was precisely to not have to refuel ICBMs all the time. This liquid fuel could sit inside the silo ICBM tanks for decades. By contrast cryogenic fuels such as LOX and LH cannot be used until just before the rocket flight. This is especially true of LH since it leaks like there is no tomorrow through nanofractures and even "tight" valves. Other gases do not have this problem.

Ilon Musk is a snake oil salesman and all the focus this showboater gets is unwarranted. I would rather pay attention to Blue Origin.


Wow! You are WAY behind on that one. I just watched (about 15 minutes ago) the SpaceX Star Hopper do what NASA and just about every other space agency/company has only dreamed of for decades: Launch a rocket in controlled flight, hover, move to a landing pad, and set down gently as pretty as you please.
https://www.youtube.com/watch?v=bYb3bfA6_sQ
(Watch the last 3 minutes for the money shot)

Who else is launching rockets to orbit while bringing back first stages to perfect landings at the Cape so they can be easily reused. Who has by far the lowest cost to do so?

Image

Who also has the most powerful operational rocket on the planet?

Image

Who????? SpaceX has successfully launched for governments and private customers. Its latest ISS resupply "Dragon" just departed the space station today, and Spacex is set to put the US back into the business of flying people to space after years of relying on the Russians. Maybe you should take some time to look at their accomplishments before you make yourself look utterly uninformed and/or biased.
When it comes to space flight, SpaceX is kicking just about everybody else's butts. That's not my biased opinion. It's reality.
Who else is also being so open about their failures; not just their accomplishments. It's all here:
https://www.youtube.com/channel/UCtI0Ho ... b67FeUjDeA
Watch every one of these videos and tell me again how "all the focus this showboater gets is unwarranted".

List of past, current and future customers (that's a LOT of "snakeoil" eh?):
https://www.spacex.com/missions
Blessed are the Meek, for they shall inherit nothing but their Souls. - Anonymous Ghung Person
User avatar
GHung
Intermediate Crude
Intermediate Crude
 
Posts: 3088
Joined: Tue 08 Sep 2009, 16:06:11
Location: Moksha, Nearvana

Re: SpaceX

Unread postby Newfie » Wed 28 Aug 2019, 07:21:52

Following.
User avatar
Newfie
Forum Moderator
Forum Moderator
 
Posts: 16127
Joined: Thu 15 Nov 2007, 04:00:00
Location: Between Canada and Carribean

Re: SpaceX

Unread postby dissident » Sat 31 Aug 2019, 13:44:38

Musk fanbois are tiresome. His crew capsule was an epic fail that SpaceX tried to spin as something minor for a few months and then gave up. Landing on barges is not the high tech it is painted to be. Rockets aren't fireworks and can be designed with extremely precise control capability. That is why they can be used to shoot down satellites. The real issue is the longevity of the engines and the tanks. Due to weight savings, they have been historically designed as disposable. For example, landing the tanks several times subjects them to enough stress to create problems from fractures. The metal used is very thin. The same goes for the engines which are not over-designed to reduce weight. So far SpaceX has talked a big deal, but we know nothing about the economics of their "reusable" rockets.

SpaceX (and other companies) is a government welfare project to bootstrap private orbital rocket industry. The taxpayer is going to have to shell out billions of dollars in subsidies for many more years. And nepotist Musk (who bought Solar City because it was run by his relatives) will be taking advantage of this welfare giving the taxpayers much less bang for the buck than is possible.
dissident
Expert
Expert
 
Posts: 6354
Joined: Sat 08 Apr 2006, 03:00:00

Re: SpaceX

Unread postby Tanada » Tue 30 Mar 2021, 13:07:39

Washington Times wrote:Biden cancels Elon Musk's adventures in space

New president is making his space policy increasingly clear: America will remain grounded for the time being.

ANALYSIS/OPINION:

The United States is in a titanic struggle with the People’s Republic of China for the dominance of space.

Although the Americans have been to the moon and sent multiple, advanced probes to the surface of Mars, since the end of the Cold War, U.S. space policy has languished in neutral. Due to this, new competitors, namely China, have arisen to challenge the dominance of the Americans in the ultimate strategic high ground of space.

China has grand ambitions for space. Not only does China plan on beating the Americans to the Martian surface by the end of the decade, but Beijing wants control of the vital orbits around the Earth. By controlling these orbits, China’s military would enjoy significant advantages over the American military. Beyond that, China plans on strip-mining the moon for valuable resources.

The Americans, though, have always had a silver bullet in its competition with China for space dominance: a vibrant and innovative private sector. Specifically, the growing number of private space start-ups, such as Elon Musk’s SpaceX.

Thanks to his reusable rocket design, Mr. Musk’s company has already cut down on launch costs by a staggering 40 percent. SpaceX insists that it can cut those costs down further. What’s more, SpaceX rockets are entirely indigenously produced. And as the ongoing race to Mars between the United States and China intensifies, Mr. Musk’s new deep space reusable rocket Starship, might just be the vehicle that gets American astronauts to Mars before China can get its taikonauts to the Red Planet.

Certainly, the Starship reusable rocket is unproven. In another America, this experimental craft would elicit wonder and its development would be encouraged. The Trump administration exhorted SpaceX to vigorously move ahead with its Starship program.

The United States, however, has a new president. And President Joe Biden is making his space policy preferences increasingly clear: America will remain grounded for the time being.

On Jan. 28, SpaceX was set to put its Starship rocket through another test in the blue skies above Texas. The objective of the test was to get the massive rocket up to 12.5 kilometers — about seven miles — above the Earth and then spin the giant rocket around so that it could make a vertical landing.

Sadly, the visionary goal of getting Americans to Mars first came crashing down when the Federal Aviation Administration (FAA) which, under the Trump administration had allowed for SpaceX to conduct their important test flights, ordered Mr. Musk to cancel the Starship prototype test.

The FAA did not cite its reasoning behind ordering the cancellation of the launch. Many have speculated that the cancellation was brought about due to safety concerns. After all, in December 2020, SpaceX did a test of the experimental rocket. The Starship prototype made it to a height of 41,000 feet. Once it reoriented itself, in order to allow for the rocket to land vertically, the great silver spacecraft promptly did a bellyflop that ended in a massive explosion.

Despite this, SpaceX learned many valuable lessons from the December failure that were to be applied to the Starship launch in January. In science, the only lasting failure occurs when one does not test a new idea or hypothesis. This axiom is especially true in the context of the new space race between the United States and China.

It’s likely that the FAA’s decision to cancel the launch is part of a wider Biden administration effort undo the Trump administration’s vibrant space policy. Plus, former President Trump’s space vision was explicitly aimed at countering advances made by China in space. It is unlikely that the Biden administration seeks to continue that policy, as the Biden team attempts to stabilize deteriorating relations with Beijing over the next few years.

Concern over Mr. Musk’s Martian intentions is likely another factor for the FAA’s cancellation of the Starship launch. Last year, Mr. Musk indicated that any future SpaceX Martian colony would not be “ruled by Earth-based laws.” The problem for Mr. Musk is that SpaceX has been awarded lucrative contracts by the Earth-based U.S. government. If SpaceX were to create a colony on Mars, because of the company’s contractual relationship with the U.S. government, Washington very much expects that colony to be an American endeavor.

Lastly, Mr. Musk has been publicly supportive of the recent “GameStonk” controversy. A group of anonymous, individual investors on Reddit decided to engage in a little activism by inflating the stock price of Gamestop, a video game retailer. Melvin Capital, a storied Wall Street investment firm, was forced into bankruptcy by this move (they took the other side of the bet, attempting to short the Gamestop stock).

The “GameStonk” event was so significant that the Biden administration is vowing to prevent something similar from happening again. Congress is even getting involved. Because of Mr. Musk’s prestige and his vocal support for the Redditors who helped to take down Melvin Capital, it is possible that the Biden administration was punishing Mr. Musk by canceling the Starship launch at the last minute.

It is not only Mr. Musk who suffers from the FAA’s cancellation of the SpaceX test flight. We, the American people — and the entire effort to beat China to Mars — suffer. The Biden administration’s decision to increase regulations on the private space launch services sector and slow down their operations, as evidenced by the recent Starship launch cancellation, will only help China in its ongoing mission to defeat America in the new space race.


SpaceX Grounded
I should be able to change a diaper, plan an invasion, butcher a hog, design a building, write, balance accounts, build a wall, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, pitch manure, program a computer, cook, fight efficiently, die gallantly. Specialization is for insects.
User avatar
Tanada
Site Admin
Site Admin
 
Posts: 16248
Joined: Thu 28 Apr 2005, 03:00:00
Location: South West shore Lake Erie, OH, USA

Re: SpaceX

Unread postby jedrider » Tue 30 Mar 2021, 14:24:59

China could have Mars, especially for manned exploration.

Robotic missions, I'm all for, however.
User avatar
jedrider
Intermediate Crude
Intermediate Crude
 
Posts: 2895
Joined: Thu 28 May 2009, 10:10:44

Re: SpaceX

Unread postby JuanP » Tue 30 Mar 2021, 22:10:30

"Another SpaceX Starship prototype explodes during high altitude flight test"
https://www.rt.com/news/519620-spacex-s ... explosion/

"SpaceX has crashed another prototype of its Starship, which the company’s boss, Elon Musk, hopes will someday take people to the Moon and Mars. The rocket exploded during landing after a high-altitude test.
Starship prototype Serial Number 11 (or SN11) took off from a launch pad at SpaceX’s facility in Boca Chica, Texas on Tuesday despite thick fog in the area.

Raptor engines lifted the rocket to an altitude of 10 kilometers. SN11 then killed two of its engines one after another in order to descend, only firing them up again when close to the ground.

The plan was for SN11 to tip upright and safely touch down on the launch pad, but the test was cut short by a massive explosion."

I think wasting money and resources on this project while we are destroying our planet's biosphere is beyond retarded. I will never understand how humans can be so stupid and so smart at the same time
"Only Americans can hurt America." Dwight D. Eisenhower
Free Meng Wanzhou! Tulsi Gabbard 2024!
JuanP
Heavy Crude
Heavy Crude
 
Posts: 1503
Joined: Sat 16 Aug 2014, 15:06:32

Re: SpaceX

Unread postby Outcast_Searcher » Wed 31 Mar 2021, 21:25:12

JuanP wrote:"Another SpaceX Starship prototype explodes during high altitude flight test"
https://www.rt.com/news/519620-spacex-s ... explosion/

"SpaceX has crashed another prototype of its Starship, which the company’s boss, Elon Musk, hopes will someday take people to the Moon and Mars. The rocket exploded during landing after a high-altitude test.
Starship prototype Serial Number 11 (or SN11) took off from a launch pad at SpaceX’s facility in Boca Chica, Texas on Tuesday despite thick fog in the area.

Raptor engines lifted the rocket to an altitude of 10 kilometers. SN11 then killed two of its engines one after another in order to descend, only firing them up again when close to the ground.

The plan was for SN11 to tip upright and safely touch down on the launch pad, but the test was cut short by a massive explosion."

I think wasting money and resources on this project while we are destroying our planet's biosphere is beyond retarded. I will never understand how humans can be so stupid and so smart at the same time

Watching Youtube videos of apparently honest customers showing how Tesla "FSD" often works VERY poorly reminds me a lot of this.

One wonders how much crashing / expoloding must go on at SpaceX for Musk to wake up and admit that perhaps, there might be a problem.

Self promotion only goes so far as Trump amply demonstrated. Given random claims -- Trump and Musk are quite similar over time.
Given the track record of the perma-doomer blogs, I wouldn't bet a fast crash doomer's money on their predictions.
User avatar
Outcast_Searcher
COB
COB
 
Posts: 9519
Joined: Sat 27 Jun 2009, 21:26:42
Location: Central KY

Previous

Return to North America Discussion

Who is online

Users browsing this forum: No registered users and 14 guests