EM Drive may actually work

EM Drive may actually work

Postby John Galt » Tue Jul 28, 2015 10:15 pm

earth to the moon in 4hrs of time. to mars in 70 days. to pluto in 18 months. to alpha centauri in 100 years.

https://hacked.com/scientists-confirm-i ... ropulsion/
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Re: EM Drive may actually work

Postby The Comrade » Tue Jul 28, 2015 10:21 pm

the EM drive is less efficient then those weird deuterium drives, which are already a functional, realistic possibility, if those are the times it can make.

plus they produce, at the moment, barely any thrust. where are those times coming from?
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Re: EM Drive may actually work

Postby John Galt » Tue Jul 28, 2015 10:24 pm

other article. theoretically anyway http://www.telegraph.co.uk/news/science ... hours.html

the fact it produces any thrust at all is encouraging, considering it was naysaid by naysayers that it was madness
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Re: EM Drive may actually work

Postby Medius » Tue Jul 28, 2015 10:47 pm

The Comrade wrote:the EM drive is less efficient then those weird deuterium drives, which are already a functional, realistic possibility, if those are the times it can make.

plus they produce, at the moment, barely any thrust. where are those times coming from?


Who cares about efficiency? A drive that doesn't use a propellant is magical, a giant leap forward if it works. Fuel weight and availability is one of the biggest restrictions to long-distance space flight. Turning electricity directly into propulsion would put us on a very fast track to expanding beyond our single world.
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Re: EM Drive may actually work

Postby The Comrade » Tue Jul 28, 2015 10:47 pm

it's an amazing breakthrough for physics but it's practicality for space exploration is for now, and likely our lifetime, negligible.
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Re: EM Drive may actually work

Postby Medius » Tue Jul 28, 2015 10:51 pm

The Comrade wrote:it's an amazing breakthrough for physics but it's practicality for space exploration is for now, and likely our lifetime, negligible.


Space exploration for now is impractical and probably will be for many years (I wouldn't say our lifetime, I think we'll hit another tech revolution soon). It makes far more sense to send unmanned robots and probes right now as the cost of exiting the atmosphere is still just too high.
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Re: EM Drive may actually work

Postby John Galt » Tue Jul 28, 2015 11:11 pm

Medius wrote:
The Comrade wrote:it's an amazing breakthrough for physics but it's practicality for space exploration is for now, and likely our lifetime, negligible.


Space exploration for now is impractical and probably will be for many years (I wouldn't say our lifetime, I think we'll hit another tech revolution soon). It makes far more sense to send unmanned robots and probes right now as the cost of exiting the atmosphere is still just too high.


well musk is trying to fix that problem with reusuable rockets. if then once in space could use -- as you say -- basically magic to move from one place to another... damn. if this holds true interplanetary travel will not be uncommon in our future. interstellar... no, but i could live long enough to see a generational ship launched, and for sure a probe on an interstellar mission
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Re: EM Drive may actually work

Postby Medius » Tue Jul 28, 2015 11:25 pm

John Galt wrote:
Medius wrote:
The Comrade wrote:it's an amazing breakthrough for physics but it's practicality for space exploration is for now, and likely our lifetime, negligible.


Space exploration for now is impractical and probably will be for many years (I wouldn't say our lifetime, I think we'll hit another tech revolution soon). It makes far more sense to send unmanned robots and probes right now as the cost of exiting the atmosphere is still just too high.


well musk is trying to fix that problem with reusuable rockets. if then once in space could use -- as you say -- basically magic to move from one place to another... damn. if this holds true interplanetary travel will not be uncommon in our future. interstellar... no, but i could live long enough to see a generational ship launched, and for sure a probe on an interstellar mission


Yeah, the people that are all excited to go die on Mars can just shift to "die in space" on a ship to another earth.

As far as the reusable rockets, it'll help, but unless we start building stuff out there, the round trips aren't going to be worth it. We need to be maximizing the payloads, which means setting up a base in a place where mining can begin and sending up equipment that can be used to gather resources and build new equipment in space.
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Re: EM Drive may actually work

Postby Spider » Tue Jul 28, 2015 11:29 pm

Medius wrote:
The Comrade wrote:it's an amazing breakthrough for physics but it's practicality for space exploration is for now, and likely our lifetime, negligible.


Space exploration for now is impractical and probably will be for many years (I wouldn't say our lifetime, I think we'll hit another tech revolution soon). It makes far more sense to send unmanned robots and probes right now as the cost of exiting the atmosphere is still just too high.


We could have guys walking around on Mars right now for far less than the cost of the Homeland Security department. Which is a spectacular waste.

Right now, DHS costs 3 times more than NASA. So I continue to be unimpressed with arguments about cost. Space exploration is the very pinnacle of human achievement. All this other stuff that costs WAY more is probably mostly horseshit.
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Re: EM Drive may actually work

Postby Medius » Tue Jul 28, 2015 11:34 pm

Spider wrote:
Medius wrote:
The Comrade wrote:it's an amazing breakthrough for physics but it's practicality for space exploration is for now, and likely our lifetime, negligible.


Space exploration for now is impractical and probably will be for many years (I wouldn't say our lifetime, I think we'll hit another tech revolution soon). It makes far more sense to send unmanned robots and probes right now as the cost of exiting the atmosphere is still just too high.


We could have guys walking around on Mars right now for far less than the cost of the Homeland Security department. Which is a spectacular waste.

Right now, DHS costs 3 times more than NASA. So I continue to be unimpressed with arguments about cost. Space exploration is the very pinnacle of human achievement. All this other stuff that costs WAY more is probably mostly horseshit.


I don't disagree. When I say it is too expensive, I mean within the constructs we have built. It isn't a commentary on the relative value. Personally I think that mankind should be holding its breath in anticipation of utter destruction until we can self-sustainable populate other worlds. Aside from quality of life, getting off this rock should be our top priority at this juncture, particularly as we are so close.

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