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Wernher von Braun explains the possibility to reach the Moon
vilSlide rule FTW.
Nylon Rope! Atomic Reactor!
Fire flare rockets from moon orbit! This is awesome!
It's full of...spiders
newtboyTake off and nuke the entire site from orbit....it's the only way to be sure.
ISS Assembly Time-Lapse Animation
BSRI'm guessing that as each piece is added, it is already orbiting with the station exactly whether it's attached or not.
The station does need periodic boosts as there is some drag caused by atmospheric changes by the sun.
Disclaimer: Not a rocket scientist
I wonder what all the orbital dynamics were like? I would guess that every addition would mean a change to the orbit/speed/etc. to keep the thing in the right place.
ISS Assembly Time-Lapse Animation
CrushBugI wonder what all the orbital dynamics were like? I would guess that every addition would mean a change to the orbit/speed/etc. to keep the thing in the right place.
WE ARE NASA!
AshenkaseCome on NASA,
The shuttle and now the Orion spacecraft have been and are designed by congressmen and women for make work projects in their states.
The shuttle, although a marvel of engineering, was a death trap due to putting the most venerable structures down the stack.
ISS is a fantastic endeavour, but its low earth orbit and NASA has been struggling with a new direction for decades. The moon... no wait... asteroids... no wait... Mars... hold on... the moon.
Just PICK ONE, at least DOUBLE the funding to NASA and make whatever new project a national initiative. The American space industry can do unbelievable things when the proper foresight is put is place backed by money. (hay, maybe take some out of the military complex?!).
We will see if the Moon remains a target for NASA, maybe that will change when your current "leader" is removed... I am mean voted out of his "office".
White House revokes CNN reporters press pass
newtboySticking Fox in there as well shows you aren't serious. Fox is pure propaganda to the extent their top rated hosts (they don't have reporters) actually went on the campaign trail with Trump and spoke at his rallies....talk about agenda.
Trump's actions and words are 98% negative, it's who he is. Reporting on him in a negative light IS honest reporting....for Christ's sake, he repeatedly lusted after his under age daughter publicly, how do you report that as a positive? "He has the fortitude of character to not act on his incestuous fantasies....at least publicly."? Can't say the same about his friend's wives or work subordinates, though.
The day of the synagogue shooting, which was targeted specifically because Trump said repeatedly that Jews are paying dangerous illegal aliens to invade the country, and with more bombs still in the mail, Trump again shirked any responsibility for his rhetoric and blamed the media for his named enemies (including the same media) being targeted by people who quoted his words in their manifestos, and again called the news media enemies of the people, the words that triggered the right wing terrorists in the first place. You argue that, by reporting his complete lack of civil leadership and his targeted threats that are being acted on, they are the problem and the one's taking jabs?! Trump didn't hold off media bashing for a single sentence, his call for unity and his blame and attack were in the same opening sentence of his remarks.
Trump is the leader of the free world, but he never once has he lead towards civility, and excessively rarely honesty or rationality. You expect cable news anchors to be the moral compass of the nation, and completely excuse president from that obligation?! *facepalm
Trump ran on being insulting and derisive of any non Trumpian coverage, Jim is just his latest target by proximity, it would be someone else if it wasn't him. Baby needs a bad man to spit up on.
If this behavior warrants removing credentials, Fox, Breightbart, and Alex Jones would have been permanently barred over a decade ago, but they're all more than welcome....largely because they were constant rude assholes to Obama and had zero respect for the office when he held it.
Good luck demanding professionalism and civility now, after 8 years of birtherism that ship sailed with Trump at the helm. Whining about it now like a thin skinned 3rd grader only makes Trump more ridiculous and hypocritical.....which is astonishing as he had already raised the bar of hypocrisy into orbit.
I would disagree on your description of the news media as it stands today.
I refuse to call it unbiased when I see an agenda,
an obvious agenda to discredit Trump at most anything he does.
CNN isn't the only trashy one.
I stick Fox in there as well but both have moments of clarity when they do simply report the news without adding their own bias to it or even editing out certain parts to make it look worse.
As an example I used to hate that Gutfield character on Fox News but anymore I find I agree with him on the insanity going on.
He has made several jabs at Trump as well.
How can you not call CNN fake news when the majority of their programming is all about Trump in a negative light?
The day of the mass shooting of Jews CNN said one minute they needed to try to cool things off with Trump etc and the next I knew they were right back bashing him.
I'd say about half an hour tops they held off the bashing.
If you are insanely jealous of Trumps winning ways than I can see how you may think CNN is legit.
Acosta wasn't even close to being civil.
Watch the original clip again and see how long he grandstanded for.
He does this far too often.
If you are that dense you need Jim Acosta to harass the President to show you what's up then I feel bad for you.
He could be much more effective if he was more professional and probably a much greater thorn in Trumps side.
Hypersonic Missile Nonproliferation
scheherazadeWe have conventional missiles that hit hypersonic speeds for short periods. Aim54 fired at altitude checks that mark, and that's a 60's/70's tech missile.
The X15 did it manned, and that first flew in the late 1950's.
Why would Russia not be able to come up with something similar in the last half-century?
Re-entry from orbit is 4x hypersonic. Russia has plenty of experience with the effects.
The Russian p-270 was made in the 80's, and used a ramjet.
This new missile is an incremental improvement over tech they already posses. A higher speed ramjet missile. Hardly a stretch.
It's not like they are spamming the internet with updates just so you can see how they are doing.
-scheherazade
The fact that the current state of the technology is not public knowledge, and the fact that it's development is a secret military program, likely without a publicly available budget in all 3 countries, makes me think it's secret. Just tests on models require a supersonic or hypersonic wind tunnel....you don't pick those up at home depot.
Nobody has seen one fly, so if it was even in the early testing phase, no one noticed. Since we're watching, I'm dubious it's past models and simulations anywhere.
I don't doubt they, like us, are working on it. I have doubts any nation has made exponentially more progress than we have, and I wouldn't trust China or Russia if they claimed to have them without seeing them demonstrated successfully, just as they shouldn't trust us if we make more unsubstantiated claims, we're proven liars.
Hypersonic Missile Nonproliferation
MordhausAlso, the Japanese planes sacrificed durability for speed, maneuverability, and gun capability. Once US pilots realized this, they exploited the vulnerability because our planes were basically tanks compared to the Japanese ones.
The US had the best rocket program once the Saturn V became available in the 60s.
As of 2018, the Saturn V remains the tallest, heaviest, and most powerful (highest total impulse) rocket ever brought to operational status, and holds records for the heaviest payload launched and largest payload capacity to low Earth orbit (LEO) of 140,000 kg (310,000 lb), which included the third stage and unburned propellant needed to send the Apollo Command/Service Module and Lunar Module to the Moon.[5][6]
The largest production model of the Saturn family of rockets, the Saturn V was designed under the direction of Wernher von Braun and Arthur Rudolph at the Marshall Space Flight Center in Huntsville, Alabama, with Boeing, North American Aviation, Douglas Aircraft Company, and IBM as the lead contractors.
To date, the Saturn V remains the only launch vehicle to carry humans beyond low Earth orbit.
Hubris.
WW2 japan had fighters that flew faster, climbed quicker, had bigger guns, and turned quicker (a6m vs f4f). And we had intel reports that told us, but we ignored them because "we have the best stuff and nobody else can compete".
You see the same stuff today with China. China makes all of our microchips, all of our microelectronics, most of which are designed over there anyways (companies here just ask for a widget that does X and Y, and Chinese companies design+make it), yet we act like as if they are some technologically retarded place that only knows how to steal ip.
Russia has been at the forefront of rocketry since ww2. Nobody has systems that compare to their consistency and reliability. Not even the U.S.. The idea that Russia can't make a hyper sonic missile before the U.S., because it's Russia, is a non sequitur.
Also, Russia broke up as a country because guaranteed government jobs for all citizens, where you can't be fired and performance is not important, is going to destroy any economy. No one will produce, shelves will be empty, and money will be no more than paper. Combine that with making private business illegal (preventing people from economically helping themselves), and you have a recipe for economic disaster and social discontent.
This missile exists to swat down carrier groups on the cheap.
We're gonna need some powerful lasers, or our own hyper sonic interceptors, or else proliferation would instantly leave us isolated in the Americas (vis-a-vis power projection via conventional weaponry). Our only option for projecting power would be reduced to nuclear or nothing.
-scheherazade
Halloween 'Cats'ume
BSRI'll be making my 63rd orbit around the Sun this Halloween if anyone wants to get me one of those in celebration.
Prospect (2018) - Official Trailer
KrazyKat42 says...I'm guessing that it's not a moon. More likely it is a gas giant and they on on a moon in orbit around it.
If that moon or other planet over the horizon isn't part of the plot line, I give it a thumbs down.
The gravity of the visible planet and the earth like planet the characters are on would be on a collision course. I suspect the environment and the characters should already be rising or at least be feeling the effects of the planet over the horizon.
That, on its own, would be a bigger story line than whatever is going on in the clip.
If Neil deGrasse Tyson was dead, he'd be rolling over in his grave.
https://www.youtube.com/watch?v=L051v3NC0F4
Stephen Drives NASA's Mars Rover With Neil deGrasse Tyson
AshenkaseIts a cute prototype that stretches the imagination but is a wholly improbable design to find its way to Mars.
The weight and dimensions alone would make it very, very difficult to de-orbit onto the surface of mars. This thing weighs: 5,500 lbs. (2,500 kilograms).
Its not going to be very economical to get it out of earths gravity and into orbit just to start, forget about the energy it will require to get it moving towards Mars.
Net Captures Space Debris
newtboyI would assume, in it's current form, it has to be deployed in the proper orbit, direction, and speed to intercept it's target without much maneuvering on it's own. Perhaps eventually they'll make capture satellites armed with dozens of these that can chase down rogue objects and catch them, but as far as I know not yet by far.
Also,,,,
What I mean is that space debris travels at speeds up to 17,500 mph or slightly more, depending on what height it is orbiting at. If you place this device in the path (or near it) of a known mass of debris, it is going to have to adjust and fire that net at a speed relative to the debris. If you have the device speed up or slow down to try and match the debris speed, it is going to rise or drop it's orbit height comparatively to the adjusted speed.
That is what I am wondering, will this device be able to catch something travelling at that speed? I'm assuming it would have to try without excessive movement changes or it would require too much fuel.
Net Captures Space Debris
MordhausWhat I mean is that space debris travels at speeds up to 17,500 mph or slightly more, depending on what height it is orbiting at. If you place this device in the path (or near it) of a known mass of debris, it is going to have to adjust and fire that net at a speed relative to the debris. If you have the device speed up or slow down to try and match the debris speed, it is going to rise or drop it's orbit height comparatively to the adjusted speed.
That is what I am wondering, will this device be able to catch something travelling at that speed? I'm assuming it would have to try without excessive movement changes or it would require too much fuel.
If I understand what you're asking, full speed is relative. Anything in orbit is traveling at a fixed, known speed to keep it from falling back to earth or flying out into space.
Once drag is imposed on the object it will start to fall and it's course will change toward earth. It will start to fall faster and then burn up in the atmosphere upon reentry.
Interesting fact:
Let's say a gun is fixed to shoot a bullet parallel to the earth. At exactly the same time you shoot that gun, you drop a bullet from the same height as the gun, both bullets will hit the ground at the same time.
If that gun could shoot that bullet 7,500 MPH (+ -), it would never hit the ground if it wasn't slowed down by air resistance.
Hope this helps.
Net Captures Space Debris
BSRIf I understand what you're asking, full speed is relative. Anything in orbit is traveling at a fixed, known speed to keep it from falling back to earth or flying out into space.
Once drag is imposed on the object it will start to fall and it's course will change toward earth. It will start to fall faster and then burn up in the atmosphere upon reentry.
Interesting fact:
Let's say a gun is fixed to shoot a bullet parallel to the earth. At exactly the same time you shoot that gun, you drop a bullet from the same height as the gun, both bullets will hit the ground at the same time.
If that gun could shoot that bullet 7,500 MPH (+ -), it would never hit the ground if it wasn't slowed down by air resistance.
Hope this helps.
I wonder if it can handle full speed?
Valve Has Made A New Portal Demo - Moondust Trailer
AshenkaseAlong the lines of BSR, don't know why the rocket is accelerating that close to the moon. It's basically going to pancake. More appropriate physics is to point the vehicle in the opposite direction and do an orbital insertion burn. But hey, its a game based on physics, why get the space part right?