Comments by "MRA" (@yassassin6425) on "Real Engineering" channel.

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  8.  @carlton7015  "research standard camera film not, protected from heat or vaccume film." So for starters you expect to be taken seriously but can't even spell the word 'vacuum'. Hasselblad adapted their 500EL camera for the Apollo missions by removing the viewfinder, modifying the shutter, replacing the usual plastic black outer surface with reflective bare metal, and using special lubricants resistant to vacuum and high temperatures Moderate speed and low sensitivity film types that was used was well protected. In fact, the camera films were doubly protected as they were in custom built aluminium and steel magazines that were a lot thicker than the standard Hasselblad ones. Also, heat transfer is not significant in the absence of convection. Also, appreciating that "research" does not involve self-proclaimed overnight armchair 'expertise' following a squandered evening consuming junk You Tube videos, cherry picked click bait confirmation bias, quote mining, false equivalence and circular self-referencing pseudoscientific conspiracy websites, do feel free to share - how precisely did you do yours? "vaccume 10 to the minus 12 tor and suits not capable of protecting the former." Never ceases to amuse that when a crap conspiracy video or junk currently trending on social media makes a claim it's then subsequently parroted en-masse by scientifically illiterate buffoons such as yourself in the mistaken belief that it makes you sound informed and clever. A vacuum doesn't exert a force. Increase the Torr value, the closer it gets to nothing. A vacuum of 10^-11 or 10^-17 torr can both be considered as zero, because they are so little. They are not negative numbers, but rather fractions: 10^-11 torr, for instance, is 1/100,000,000,000th of a torr. On the moon, particles are so sparse that there are only 100 molecules per cubic centimeter. (In comparison, Earth's atmosphere at sea level has about 100 billion billion molecules per cubic centimeter.) So assuming that there were half this in some other region of space, 50 molecules per cubic centimeter of even a quarter, 25 molecules per cubic centimeter, your Torr value would increase as you approach what is termed a 'perfect vacuum'. The Torr value associated with this has no effect whatsoever upon a spacesuit in which the pressure from within is maintained at a trivial 4.8psi. For reference, soda cans range between 30 and 50 psi, but can withstand up to 100. To clarify again - a vacuum is simply the absence of matter. It doesn't exert a force. You could place a suited astronaut in a perfect vacuum and the interior pressure of the suit would be the same. What difference does 100 molecules per cubic centimetre, 50, 25 or none make? So again, if the pressure inside is 4.8 psi and the pressure outside is essentially zero, the pressure differential is 4..8 psi. "Repressuristion temp drop of capsule after moon walk" What? "flag" What about it? "foot prints" Should be one word. What about them? "not forget the saturn five rocket not capable of reach enough power to launch velocity to escape orbit" What on Earth are you talking about? The first stage (SI-C) was powered by a cluster of five F1 engines collectively producing 7.5 million lbs of thrust at lift off. These burned for 2 minutes and 41 seconds, lifting the rocket to an altitude of 42 miles and a speed of 6,164 miles per hour. The second stage (S-II) contained five J-2 engines. After the first stage was discarded, these burned for approximately 6 minutes at 1.2 million lbs of thrust, taking the vehicle and payload to 115 miles altitude and 15,500 mph. The Third stage (SIV-B) then placed Apollo in a circular parking orbit 1,640 miles downrange at an altitude of 118.8 miles (191.2 km) with an orbital velocity of 17,432 mph. Trans lunar injection was performed by the restartable J-2 engine in the S-IVB third stage of the Saturn V rocket. Apollo 11′s S-IVB burned for 5 minutes, 41.01 seconds @1,138.50 kN (255,945 lbf) achieving a velocity of 24,994.656 mph to send it to the moon. "There's too much to list it's a joke" So basically, you have lazily regurgitated ill-informed opinions and factoids and claims of others equally as clueless as yourself about subjects that you demonstrably haven't got the remotest idea about. The only joke here is you. Dumb online conspiracy believer.
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  23.  @daryllect6659  "Anyone capable of critical thought knows that no human has ever been on the lunar surface." So that'll be entire branches of science, specialist disciplines and fields of expertise worldwide such as aerospace engineering, Pulitzer nominated investigative journalism, Nobel Prize winning physicists, some 10.000 private investors and space sector organisations, and each of the 76 other space agencies on the planet to name a few, all incapable of "critical thought"? The Apollo Programme has been dissected by technical journalists and some of the finest minds on the planet for over half a century. It was completely transparent and there is no engineering project in history of the scale and complexity that has been so ingrained in the public eye and exhaustively covered. In addition to this, in excess of half a century, the physics of every mission profile, the engineering of every design down to each schematic, specification - to every nut, bolt, switch and circuit breaker has been forensically scrutinised and technically examined worldwide. There are tens of thousands of publications, journal articles/papers and books written on the subject. The private sector space sector is growing exponentially. Companies such as Blue Origin and Space X and Aerojet Rocketdyne are part of a huge supply chain of consisting of a myriad of contractors, partnerships and stakeholders in Project Artemis. Meanwhile independent organisations such as Intuitive Machines, Advanced Space, Astrobotic, Northrup-Grumman, Venturi Astrolab and many others are making modern lunar missions happen in addition to the 76 other space agencies I mentioned. To varying degrees, the work they're doing is predicated upon what was learned during the Apollo missions and this invites large scale investment from stakeholders with serious money on the line who need to be privy to the inner workings of these ventures. There are also companies working on next generation of lunar terrain vehicles for the Artemis missions who base aspects of their work on the accomplishments of Apollo. Then there are the professors teaching orbital mechanics at MIT, Purdue, UC Boulder, and other elite universities whose work also draws on the achievements of the Apollo program. Meanwhile, let's listen instead to an insignificant, non-achieving nobody arrogantly mouthing off and trolling on the comments section of You Tube that thinks "critical thought" involves mindlessly regurgitating what some dumb online conspiracy video or social media meme told him to think about a subject that he has absolutely zero knowledge of whatsoever.
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  42.  @alllivesmatter8581  Your reply to me is shadow banned. However, I have copied it here - "well the Van Allen belts are extreme radiation that it is impossible for life to pass through to begin with...." Says who? James Van Allen himself disagreed and every astrophysicist on the planet would beg to differ. The Van Allen Belts are in flux, but have areas of varying intensity. Each mission flew a slightly different trajectory in order to access its landing site, but the orbital inclination of the translunar coast trajectory was always around the vicinity of 30°. Stated another way, the geometric plane containing the translunar trajectory was inclined to the earth's equator by about 30°. A spacecraft following that trajectory would bypass all but the sparse edges of the Van Allen belts. According to James Van Allen himself: "The outbound and inbound trajectories of the Apollo spacecraft cut through the outer portions of the inner belt and because of their high speed spent only about 15 minutes in traversing the region and less than 2 hours in traversing the much less penetrating radiation in the outer radiation belt. The resulting radiation exposure for the round trip was less than 1% of a fatal dosage – a very minor risk among the far greater other risks of such flights. I made such estimates in the early 1960s and so informed NASA engineers who were planning the Apollo flights. These estimates are still reliable." In addition to this, the Van Allen belts The VABs trap charged particles - alpha and beta radiation. Do you know why this is significant?
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