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REAL WORLD EVENT DISCUSSIONS
All things Space
Wednesday, June 2, 2021 6:47 AM
THG
Friday, June 4, 2021 9:59 AM
JAYNEZTOWN
Saturday, June 5, 2021 4:48 AM
Saturday, June 5, 2021 9:18 AM
6IXSTRINGJACK
Wednesday, June 9, 2021 8:12 AM
Quote:Originally posted by 6IXSTRINGJACK: youtube.com/watch?v=vx41EfvohJw
Wednesday, June 9, 2021 9:37 AM
Quote:Originally posted by JAYNEZTOWN: Why should I or anyone else click on that retarded shit?
Quote:People who rot their brains with too much weed and pot every monrning find normie youtube vids like this funny
Thursday, June 10, 2021 9:51 AM
Thursday, June 10, 2021 3:15 PM
Quote:Originally posted by 6IXSTRINGJACK: You sound a lot like JSF, BTW.
Thursday, June 10, 2021 3:29 PM
Thursday, June 10, 2021 10:46 PM
Quote:Originally posted by JAYNEZTOWN: Here's an idea next time before you post and giggle and focus on stupid shit, just put down the bong and step away from the computer.
Monday, June 14, 2021 8:18 AM
Friday, June 25, 2021 6:34 AM
Quote:Originally posted by 6IXSTRINGJACK: I don't smoke weed. P.S. Go fuck yourself.
Friday, June 25, 2021 10:19 AM
1KIKI
Goodbye, kind world (George Monbiot) - In common with all those generations which have contemplated catastrophe, we appear to be incapable of understanding what confronts us.
Quote:Originally posted by JAYNEZTOWN: ... but now you the weed dude stoned post....you won't always 'stoned' out of it posting not all the time, you might sound like some dude on a JoeRogan podcast, hippe argumentative chilled post or having a 'moment of clarity' in those clouds of haze.
Quote:When you post bong'ed stoned out of your mind everyone sees it in the way you write
Friday, June 25, 2021 1:31 PM
SIGNYM
I believe in solving problems, not sharing them.
Quote: JAYNZE: Why should I or anyone else click on that retarded shit? People who rot their brains with too much weed and pot every monrning find normie youtube vids like this funny
Quote: JAYNEZ: Here's an idea next time before you post and giggle and focus on stupid shit, just put down the bong and step away from the computer. When you post like this you sound like a retarded stoner, something out of beavis and butt-head, maybe south park or cheech and chong You spent years here drunk posting, probably so drunk you didnt notice or didnt remember but now you the weed dude stoned post....you won't always 'stoned' out of it posting not all the time, you might sound like some dude on a JoeRogan podcast, hippe argumentative chilled post or having a 'moment of clarity' in those clouds of haze. When you post bong'ed stoned out of your mind everyone sees it in the way you act the way you write
Friday, June 25, 2021 1:34 PM
Friday, June 25, 2021 1:41 PM
Friday, June 25, 2021 2:17 PM
Friday, June 25, 2021 3:05 PM
Friday, June 25, 2021 8:05 PM
SECOND
The Joss Whedon script for Serenity, where Wash lives, is Serenity-190pages.pdf at https://www.mediafire.com/two
Quote:Originally posted by JAYNEZTOWN: We seem to be getting one of those UFO or UAPs report coming out soon, I normally wouldn't post this as we used to get enough PirateNews Level shit back in the day....but the media seems to be making a big deal of this new upcoming report. 'Normalising' UFOs - retired US Navy pilot recalls Tic Tac encounter https://www.bignewsnetwork.com/news/270041483/normalising-ufos---retired-us-navy-pilot-recalls-tic-tac-encounter NASA astronauts have also talked about aliens or reported seeing strange things in space, NASA John Glenn, Gordon Cooper had talked of 'aliens' and 'fireflies'
Friday, June 25, 2021 11:02 PM
Quote:Originally posted by SIGNYM: I think JAYNZ is Australian. Not sure why I think Ozzie, but I know for sure not American.
Sunday, June 27, 2021 4:46 PM
Sunday, July 11, 2021 9:45 AM
Quote:The Space Race: Technical Facts vs Popular Narrative - by Gordog by Gordog A little while ago, commenter Karlof1 asked me about the space race, the Apollo Program, and the role of Nazi scientists recruited under Operation Paperclip. This is a fascinating subject that has also been severely distorted by the American narrative. What prompted Karlof's query was my earlier, and somewhat lengthy technical discussion of today's state of space technology, where the media narrative is that the US is greatly advanced, due mostly the 'exploits' of Space X---when in fact the situation is quite the opposite. The US is far behind important core technologies like advanced rocket engines and space station tech, both of which it acquired from Russia. China has similarly acquired nearly all of its core space technology from Russia, but has built impressively on that technology transfer---including developing its very own space station tech, and its own advanced rocket engines. During the 1990s, many important Russian industries were on the verge of collapse due to the disintegration of the USSR. Hence there was something of a firesale of Russian space tech, something that would have been considered unthinkable previously. The Chinese acquired their entire manned program, Shenzhou, lock, stock and barrel through direct technology transfer from Russia, resulting in the first Chinese man in space in 2003. The US similarly bought its way into the Mir2 space station that was already built, but not yet launched, abandoning its own effort to build an indigenous station to rival Mir---the Freedom space station that was killed on the drawing board. Those Mir2 modules, now known as the Russian Orbital Segment, would become the functional core of the ISS. The US also acquired advanced Russian engines and key engine technologies, mostly the RD180, which is in fact the undisputed workhorse for both high profile Nasa missions [such as the current mars rover mission], and the US Space Force, which launches nearly all of its mission-critical payloads on the Russian engines.
Quote: Other Russian engines, including the RD190 and even the 1960s era mothballed NK33s were also bought up and pressed into service by the US. That the Russians possessed this advanced engine technology was completely unknown in the west until the 1990s, which had regarded the 'closed-cycle' technology as technically 'impossible.' So let's take a look back to the 1950s, when spaceflight was first achieved. This was an exciting era, and there is much to discuss here, so I will leave the Apollo story for another time. By the latter stages of Word War 2, the Germans were the undisputed leaders in rocket technology. The V2 rocket, which was used to bombard London, was a hugely impressive piece of engineering for the time. Russia, whose rocket technology in the 1930s was considered comparable to the Germans, had fallen behind. But the country did develop smaller, albeit usable rocket engines, for instance the experimental Bereznyak-Isayev BI1 interceptor aircraft. The US really had no rocket engine technology to speak of during this era. But the US would import most of the German rocket engineers, as well as some working copies of the V2 itself. This would provide a strong base to build on, not just for the space race a decade later, but also the far more important race for strategic weapons, namely the intercontinental ballistic missile. A quick tale of the tape on the V2: It had a mass of 12.5 metric tons, and a thrust of about 25 tons, from a single engine burning alcohol and liquid oxygen. It could reach a speed of 3,500 mph, and a flight range of about 300 km. Incredibly, over 3,000 of these were built during the war! Von Braun and over 100 key V-2 personnel surrendered to the Americans, and many of the original V-2 team ended up working at the Redstone Arsenal. The US also captured enough V-2 hardware to build approximately 80 of the missiles. The Soviets captured the V2 manufacturing facilities in Eastern Germany and used some of the remaining German engineers and technicians to build 30 V2s of their own by 1946. The following year, a group of these engineers were transferred to Russia to work under the direction of Sergei Korolev, on the R1 missile, a copy of the V2, but built using Russian industrial plants. This was quickly followed by the substantially improved R2, which first flew in 1949, and featured a number of key design improvements. R2 achieved double the V2's range, and a much higher speed of nearly 5,000 mph. By 1953, the Russians started on what would become the world's first ICBM and also the world's first space launch vehicle---the R7 'Semyorka' rocket. This was a huge leap forward in rocket technology. The R7 first flew in 1957 and launched Sputnik, the first satellite in earth orbit, later that year. It was also the launch vehicle for the first TWO humans in space, Yuri Gagarin in April, 1961 and Gherman Titov in August of the same year. In the meantime, the US launched its first 'astronaut,' Alan Shepard on a suborbital 'spaceflight' atop a Mercury-Redstone rocket that was basically a slightly improved V2, comparable to the Russian R2 of a decade earlier. In this photo from 1961, we see the Mercury-Redstone rocket that carried Shepard on America's first 'spaceflight' [more on that in a moment]. Joachim Kuettner, the Mercury project manager, and former V2 engineer is seen at left. 'Astronaut' Gus Grissom is sixth from left. The size difference between the Mercury Rocket and the Russian Semyorka is obvious. With a mass of 30 tons, it was barely one tenth the mass of the R7. The latter's thrust of over one million pounds was more than TWELVE times the power of the single engine Mercury rocket with its 78,000 pounds of thrust! Crucially, the single-stage Mercury could only reach a speed of about 5,000 mph, less than one third of orbital velocity of 18,000 mph [8 km/s]. A little basic physics to explain what 'space flight' really means. In short, it means achieving orbit, which is a function of SPEED, not altitude. To understand this, a spacecraft must generate enough centrifugal force to overcome the earth's gravitational pull. When the spacecraft's centrifugal force is exactly equal to the earth's gravity, the spacecraft will continue orbiting the earth indefinitely, just as the space station stays aloft [provided it is high enough above the atmosphere that collisions with few and far between air molecules don't slow down its speed, which will cause it to descend, and require an engine burn to speed back up]. A good way to visualize this equilibrium of forces is with the Olympic hammer throw. As seen here, the athlete swings a metal ball attached to a length of cable he is holding. As he swings it around, the centrifugal force builds up and wants to hurl that ball off into space. But the cable is like the force of gravity keeping it from spinning off. The two forces are in exact equilibrium, until he lets go. The only difference with an orbiting spacecraft is that the earth's gravity never lets go! Once equilibrium is reached the two opposing forces are equal and opposite, as per Netwon's Third Law. And since centrifugal force is a function of speed, it is necessary to reach a speed of about 8 km/s [18,000 mph] to counter the earth's gravitational acceleration of 9.8 meters per second squared. [Here is the math: centrifugal force = mass x velocity squared, divided by radius of the circular motion. Since the radius of the earth is about 6,400 km, and we assume a unit mass of 1 kg, then it is a simple matter of algebra to solve for speed: square root of (earth's radius in meters x acceleration of gravity), which gives...square root of (6,400,000 m x 9.8 m/s^2) = 7,900 m/s, or ~8 km/s] I am dwelling on this because it is important to understand what actual spaceflight means. Simply flying to any given height above the atmosphere is not spaceflight---anymore than a ski jump is 'flying.' Similarly, feeling weightlessness also does not require actual spaceflight. Astronauts regularly train on large commercial jets that have had their interiors removed and the pilots fly the airplane in a ballistic arc that provides up to several minutes of zero g flight inside the cabin training space. In fact, you can have several seconds of zero g flight in a little Cessna student training aircraft! So let's continue with the relevant stats for the first American 'spaceflight' of Alan Shepard. His 1961 flight aboard that Mercury rocket [a souped up V2] covered a total distance of 263 miles over the ground! While staying aloft for a grand total of 15 minutes! Now compare that to Gagarin and Titov's real spaceflights, Gagarin making a complete orbit of the earth in about 90 minutes, which is 25,000 miles, almost one hundred times greater than Shepard's distance flown. Titov Orbited the earth 17 times in 25 hours aloft just a few months after Gagarin---covering a distance of 425,000 miles! Obviously the US has been willfully deceiving folks about what spaceflight means for all of these decades. And they have been doing it because they desperately wanted to show they could 'match' the Russians by sending a man into 'space.' And the reason they could get away with this is because they knew that the majority of folks simply don't have any knowledge of physics. It is a cynical charade that plays upon the public's lack of understanding! It was only John Glenn's 1962 flight aboard a much more capable rocket, the Atlas, which put the first American in space. He flew three orbits, covering a distance of 75,000 miles in about four hours aloft. This was in fact an incredibly daring feat, considering the shortcomings of the early Atlas rockets. This was also the first US ICBM. It [Atlas rocket] was far less capable in both mass and thrust than the Soviet R7, and could only carry a fraction of the latter's payload. More importantly, it was prone to spectacular explosions. After watching an Atlas ICBM explode shortly after launch, Mercury astronaut Gus Grissom remarked "Are we really going to get on top of one of those things?" The numerous failures led to Atlas being dubbed an "Inter County Ballistic Missile" by missile technicians... An 'inter-county' ballistic missile? Why not?...considering the first American 'astronaut' Shepard made an inter-county 'spaceflight.' But hats off to John Glenn, who showed remarkable grit to fly one of these things at this stage in the game, where the Americans were clearly desperate to keep up. Glenn flew into orbit again at age 77, aboard the Shuttle STS95 mission. What is clear to this point in time is that both the Russians and US piggybacked off the German V2 technology. The big difference in results was due to the Russians having their own, indigenous rocket capabilities that were not that far behind Germany. The impressive Soviet buildup of higher education was perhaps the key, which built greatly on top of already world-leading institutions like the Bauman Moscow State Technical University, which pioneered the use of deep practical education in concert with industry, alongside the classroom theory. This influence was in fact adopted back in the latter 19'th century by MIT and other American technical universities. During the Stalin era, 'Baumanka' founded more than 70 technical universities in the USSR. Among them some of the more storied names in specialist fields like rocketry, aviation [TSAGI] and many more. I will leave the story at this point, but perhaps some interesting and hitherto unfamiliar aspects of the early space race have been presented. There is still much more ground to cover before we get to the moon race, but it is worth noting that the R7 Semyorka evolved into the Soyuz launch vehicles, which have made nearly 2,000 spaceflights to date and are still carrying cosmonauts and astronauts to the space station.
Quote:There are many interesting technical details here, as the engines on the Semyorka-Soyuz are remarkably similar to the original V2. The Russians simply refined this basic engine technology and literally perfected it. However, the advanced closed-cycle engines would come along later, for larger and more demanding launches. By comparison, the US space program was far more discontinuous. Neither the V2 nor the early Atlas technology was ever refined or taken to its logial evolutionary limit. The same was true for the Saturn V of the Apollo program, which was abandoned after just 13 flights. And so on down the line. There is still lots of very interesting technical discussion engines to explore. And engines are of course the heart of any spacecraft---in the same way a turbojet engine is the beating heart of an aircraft.
Sunday, July 11, 2021 10:01 AM
Sunday, July 11, 2021 5:21 PM
Sunday, July 11, 2021 7:39 PM
Saturday, September 25, 2021 9:08 AM
Sunday, September 26, 2021 6:18 PM
Tuesday, October 12, 2021 10:02 AM
Tuesday, October 12, 2021 10:20 AM
Quote:Originally posted by THG: Can't tell who JAYNEZTOWN is quoting above, no matter.
Sunday, October 17, 2021 6:31 PM
Monday, October 25, 2021 8:18 AM
Tuesday, October 26, 2021 3:16 PM
Tuesday, October 26, 2021 6:22 PM
Wednesday, October 27, 2021 8:03 AM
Thursday, October 28, 2021 9:22 AM
Thursday, October 28, 2021 12:26 PM
Monday, November 1, 2021 2:03 PM
Friday, November 5, 2021 6:54 AM
Monday, November 22, 2021 4:05 PM
Thursday, November 25, 2021 2:53 PM
Friday, November 26, 2021 6:04 AM
Tuesday, November 30, 2021 3:12 PM
Wednesday, December 1, 2021 1:05 PM
Tuesday, December 7, 2021 1:02 PM
Friday, December 10, 2021 6:35 AM
Saturday, December 25, 2021 12:17 PM
Saturday, December 25, 2021 1:09 PM
Monday, December 27, 2021 6:45 AM
Monday, December 27, 2021 8:53 AM
Monday, December 27, 2021 10:36 AM
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