[QUOTE=Pvt. Ryan;20594645]lasers shooting ur own sail = putting a fan on a sailboat it don't work sorry about your design[/QUOTE]
psot
[QUOTE=DOG-GY;20594546]Uhh I was talking about shooting photons out the arse of a spacecraft not a sail
[editline]02:54PM[/editline]
Gravity is only a theory so we can prove it wrong and start floating
BRILLIANT
why not actually think it through before you start to argue a VERY well established theory?
[B]You don't even know what a theory is[/B].[/QUOTE]
That's ironic seeing as you're saying that if proved wrong we would start floating. A theory EXPLAINS what something is, a law is what explains what happens. The LAW of gravity tells us what happens, the theory of gravity tells us why.
[QUOTE=Pvt. Ryan;20594670]nasa already figured this out in like the 50s all you do is drop hundreds of nukes out the back of your ship and soak up the explosion[/QUOTE]
The "old Boom-boom" (a.k.a Orion) is good for lifting payloads into orbit (If it weren't for the fallout, EMP, and the fact that it's illegal), and for interplanetary spaceflight.
Not that useful for interstellar spaceflight, unless you use a generational ship.
Can someone explain to me how the photon sail is supposed to work? You shoot lasers that way to push against it? In my mind, that wouldn't work. The reason you get momentum in space is because you're essentially pushing off of whatever source you are using to propel your ship.
[QUOTE=Kybalt;20594781]That's ironic seeing as you're saying that if proved wrong we would start floating. A theory EXPLAINS what something is, a law is what explains what happens. The LAW of gravity tells us what happens, the theory of gravity tells us why.[/QUOTE]
A theory can be disproved, a law cannot. It's a law of gravity because we know gravity exists. If we didn't know if there was gravity, it would be a theory. You cannot disprove the laws of physics. We know physics exists, you might be able to disprove how certain physics are attained, but you cannot disprove the fact that it's there and you cannot do some things because of it.
[QUOTE=Zareox7;20595272]Can someone explain to me how the photon sail is supposed to work? You shoot lasers that way to push against it? In my mind, that wouldn't work. The reason you get momentum in space is because you're essentially pushing off of whatever source you are using to propel your ship.
[/QUOTE]
The radiation (light) causes pressure on the sail, which moves it forward.
[QUOTE=Eudoxia;20595297]The radiation (light) causes pressure on the sail, which moves it forward.[/QUOTE]
But you are pushing away from the sail as well. Also, have they made this yet to use as a device to move a spacecraft? It seems impossible for light to move something.
The idea is sound, except for the part how you get the pressure on the sail. You would need to use an outside source to push the sail such as a solar flare or drop the whole sail part entirely and just latch onto a meteor.
[QUOTE=Kybalt;20594781]That's ironic seeing as you're saying that if proved wrong we would start floating. A theory EXPLAINS what something is, a law is what explains what happens. The LAW of gravity tells us what happens, the theory of gravity tells us why.[/QUOTE]
That was p obvious sarcasm. How did you even take that seriously?
[editline]03:35PM[/editline]
[QUOTE=Zareox7;20595272]A theory can be disproved, a law cannot. It's a law of gravity because we know gravity exists. If we didn't know if there was gravity, it would be a theory. You cannot disprove the laws of physics. We know physics exists, you might be able to disprove how certain physics are attained, but you cannot disprove the fact that it's there and you cannot do some things because of it.[/QUOTE]
That's not what a theory is either.
A law describes, a theory explains. It's simple.
[QUOTE=Zareox7;20595371]But you are pushing away from the sail as well. Also, have they made this yet to use as a device to move a spacecraft? It seems impossible for light to move something.[/QUOTE]
[url]http://en.wikipedia.org/wiki/Cosmos_1[/url]
Sounds quite a bit like Project Valkyrie in some points of your argument.
[URL]http://en.wikipedia.org/wiki/Project_Valkyrie[/URL]
The numbers work and the concept is both feasible and sound, but the problem with Project Valkyrie is that it requires Antimatter, which would be solved by the Solar Satellites you were arguing about (it would be 'teleported' probably by concentrated microwaves, not simply 'teleported')
[B]Fun Fact[/B]: The spaceship seen in Avatar is based off of Project Valkyrie.
[QUOTE=Canuhearme?;20595607]Sounds quite a bit like Project Valkyrie in some points of your argument.
[URL]http://en.wikipedia.org/wiki/Project_Valkyrie[/URL]
The numbers work and the concept is both feasible and sound, but the problem with Project Valkyrie is that it requires Antimatter, which would be solved by the Solar Satellites you were arguing about (it would be 'teleported' probably by concentrated microwaves, not simply 'teleported')
[B]Fun Fact[/B]: The spaceship seen in Avatar is based off of Project Valkyrie.[/QUOTE]
That was because Charles Pellegrino was a scientific consultant on the film.
[QUOTE=Canuhearme?;20595607]Sounds quite a bit like Project Valkyrie in some points of your argument.
[URL]http://en.wikipedia.org/wiki/Project_Valkyrie[/URL]
The numbers work and the concept is both feasible and sound, but the problem with Project Valkyrie is that it requires Antimatter, which would be solved by the Solar Satellites you were arguing about (it would be 'teleported' probably by concentrated microwaves, not simply 'teleported')
[B]Fun Fact[/B]: The spaceship seen in Avatar is based off of Project Valkyrie.[/QUOTE]
Yeah, I found out about the Valkyrie after watching Avatar. The "spaceship on a string" and putting the engines on the front ideas are awesome, the only thing I don't like about the Vakyrie is the mass ratio of 22.
Also, regarding the "putting a fan behind a parachute" arguemnt, the [URL=http://en.wikipedia.org/wiki/Nuclear_pulse_propulsion#Medusa]Medusa[/URL] seems to be feasible:
[IMG]http://upload.wikimedia.org/wikipedia/commons/f/f6/MedusaNuclearPropulsionOperatingSequenceDrawing.png[/IMG]
[QUOTE=Eudoxia;20595819]Yeah, I found out about the Valkyrie after watching Avatar. The "spaceship on a string" and putting the engines on the front ideas are awesome, the only thing I don't like about the Vakyrie is the mass ratio of 22.
Also, regarding the "putting a fan behind a parachute" arguemnt, the [URL=http://en.wikipedia.org/wiki/Nuclear_pulse_propulsion#Medusa]Medusa[/URL] seems to be feasible[/QUOTE]
Then you've got the problem of your crew-capsule flying through all the remains of the blast, and the problem of getting the pulse unit into place to start with.
[QUOTE=Useful Dave;20595897]Then you've got the problem of your crew-capsule flying through all the remains of the blast, and the problem of getting the pulse unit into place to start with.[/QUOTE]
Touche.
[QUOTE=Eudoxia;20595819]Yeah, I found out about the Valkyrie after watching Avatar. The "spaceship on a string" and putting the engines on the front ideas are awesome, the only thing I don't like about the Vakyrie is the mass ratio of 22.
Also, regarding the "putting a fan behind a parachute" arguemnt, the [URL="http://en.wikipedia.org/wiki/Nuclear_pulse_propulsion#Medusa"]Medusa[/URL] seems to be feasible:
[IMG]http://upload.wikimedia.org/wikipedia/commons/f/f6/MedusaNuclearPropulsionOperatingSequenceDrawing.png[/IMG][/QUOTE]
I visited the Wikipedia page. The explosion is not part of the ship there for the ship is absorbing the energy so to speak. The ship itself is not exerting a force on anything. so this could work. but this works on completely different principles to your idea.
umm [IMG]http://controls.ae.gatech.edu/augment/solarsail/solarsail.jpg[/IMG]
Solar sails. Power comes from stars or something
[QUOTE=Eudoxia;20593449]Right now the Alcubierre drive and wormholes are still theories.
If they turn out to require fucking huge amounts of energy, then we'll have to stick to subluminal spacecraft like an antimatter Valkyrie.[/QUOTE]
I believe to make the Alcubierre drive work (in theory of course hurp durp) you need some form of exotic matter which we are still some time away from being able to collect (of course exotic matter is a bubble term for a number of different ideas but we're nowhere close to harvesting ANY of them in any reasonable quantity).
[QUOTE=ducky5;20597006]umm [IMG]http://controls.ae.gatech.edu/augment/solarsail/solarsail.jpg[/IMG]
Solar sails. Power comes from stars or something[/QUOTE]
Quality post.
I was thinking...
[IMG]http://img13.imageshack.us/img13/3939/part1j.png[/IMG]
[IMG]http://img246.imageshack.us/img246/1550/part2x.png[/IMG]
[IMG]http://img72.imageshack.us/img72/7515/part3.png[/IMG]
ship rides bomb shock wave. Saw that some where but cant remember where. but thats what im thinking :eng101:
OHH thats the Medusa thing on the top :eng99:
That's project Orion, yeah.
The good ol' boom-boom.
[QUOTE=Eudoxia;20597430]That's project Orion, yeah.
The good ol' boom-boom.[/QUOTE]
His seems to remind me more of the lulzy Project Helios really, although they both work upon the same principles, just adding extra reaction mass/using a propulsion chamber that seperates them for basics.
[QUOTE=Eudoxia;20595459][url]http://en.wikipedia.org/wiki/Cosmos_1[/url][/QUOTE]
Yeah, that's my thought exactly. You could use the sun to propel the ship by capturing whatever energy given off with a sail. But putting the thrusters on the ship itself wouldn't be possible to propel the ship efficiently atleast.
Where do you guys learn this stuff?
[QUOTE=Surreal;20601065]Where do you guys learn this stuff?[/QUOTE]
[IMG]http://www.ehapa.de/ehapa/content/e7/e38/e5899/e4933/e4954/Elf_Duesentrieb.jpg[/IMG]
[QUOTE=Surreal;20601065]Where do you guys learn this stuff?[/QUOTE]
[IMG]http://www.projectrho.com/rocket/atomicRocketLogo.jpg[/IMG]
[QUOTE=Useful Dave;20601640][IMG]http://www.projectrho.com/rocket/atomicRocketLogo.jpg[/IMG][/QUOTE]
Exactly what I was going to say.
Link in any case: [url]http://www.projectrho.com/rocket/[/url]
Best reference site for any aspiring sci-fi writer. You can also find the specification of the antimatter Valkyrie, after reading it I decided to change the ship on my book to a Valkyrie (sorta).
It might not be interstellar unless you build a generation ship, but nuclear pulse propulsion is still awesome.
[IMG]http://i84.photobucket.com/albums/k12/Useful_Dave/Solaris-Departure.jpg[/IMG]
You first need a engine that only takes electricity.
[QUOTE=Useful Dave;20602401]It might not be interstellar unless you build a generation ship, but nuclear pulse propulsion is still awesome.
[IMG]http://i84.photobucket.com/albums/k12/Useful_Dave/Solaris-Departure.jpg[/IMG][/QUOTE]
That one looks pretty realistic.
I wish they built an Orion. It might not be very useful for interstellar travel, but they should do it just for the kicks and laughs.
EDIT: A lot of good things would happen if we did stuff just for the kicks...
[QUOTE=Eudoxia;20602432]That one looks pretty realistic.
I wish they built an Orion. It might not be very useful for interstellar travel, but they should do it just for the kicks and laughs.
EDIT: A lot of good things would happen if we did stuff just for the kicks...[/QUOTE]
Orion had quite abit of work put into it, even if some of the things were just laughable due to inaccurate data at the time.
[IMG]http://i84.photobucket.com/albums/k12/Useful_Dave/BaseConcept.jpg[/IMG]
[IMG]http://i84.photobucket.com/albums/k12/Useful_Dave/LulMarsPlane.jpg[/IMG]
[QUOTE=Useful Dave;20602651]Orion had quite abit of work put into it, even if some of the things were just laughable due to inaccurate data at the time.
[IMG]http://i84.photobucket.com/albums/k12/Useful_Dave/BaseConcept.jpg[/IMG]
[IMG]http://i84.photobucket.com/albums/k12/Useful_Dave/LulMarsPlane.jpg[/IMG][/QUOTE]
That actually makes sense.
To an extent.
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