Search found 118 matches

by Boethius
Mon Jun 10, 2013 12:32 pm
Forum: Apollo, and more space hoaxes
Topic: Does Rocketry Work beyond Earth's atmosphere?
Replies: 819
Views: 814366

Re: Why Rocketry Doesn't Work in the Vacuum

I think it is safe to assume that the ideas seeded by this debate on NASA/Disney rocket propulsion and vacuum physics are germinating fast in the minds of those rank-and-file Rocketry Forum members who follow the debate in silence, the non-watch dogs and non-larryds who are sincere enough to digest...
by Boethius
Mon Jun 10, 2013 12:06 pm
Forum: Apollo, and more space hoaxes
Topic: Does Rocketry Work beyond Earth's atmosphere?
Replies: 819
Views: 814366

Re: Why Rocketry Doesn't Work in the Vacuum

The thrust or force of a rocket engine fitted to a rocket in vacuum space is provided by the displacement of the mass of hot exhaust gases at high velocity through a nozzle of the rocket engine - as per Newton. The rocket will displace in the opposite direction of the escaping hot gases. The above ...
by Boethius
Mon Jun 10, 2013 1:54 am
Forum: Apollo, and more space hoaxes
Topic: Does Rocketry Work beyond Earth's atmosphere?
Replies: 819
Views: 814366

Re: Why Rocketry Doesn't Work in the Vacuum

PS: I found several posts by Boethius where he said that there is no gravity in space (or sometimes, very low gravity, as we know 90% gravity is). 100,000 miles away from the earth the influence of it's gravity is .4% of what it is on the surface and that's not even halfway to the moon. Remember gr...
by Boethius
Mon Jun 10, 2013 12:49 am
Forum: Apollo, and more space hoaxes
Topic: Does Rocketry Work beyond Earth's atmosphere?
Replies: 819
Views: 814366

Re: Why Rocketry Doesn't Work in the Vacuum

* Today I giggled the keywords "rocketry vacuum" and found a 3-page-long thread making fun of this discussion at the ... http://www.rocketryforum.com/images/Rocketry_Forum_logo_shadow.png Hey simon, I just checked out the Rocketry Forum's comments regarding this thread. Wow. It's obvious that the p...
by Boethius
Sat Jun 08, 2013 6:26 pm
Forum: Apollo, and more space hoaxes
Topic: Does Rocketry Work beyond Earth's atmosphere?
Replies: 819
Views: 814366

Re: Why Rocketry Doesn't Work in the Vacuum

Releasing gas into space does no work, creates no force. The problem with accepting this simple and undisputable fact is that it renders a lot of other discussions pointless, such as whether the Curiosity Rover could have descended on Mars the way NASA says it did and with the amount of fuel allott...
by Boethius
Sat Jun 08, 2013 4:28 pm
Forum: Apollo, and more space hoaxes
Topic: Does Rocketry Work beyond Earth's atmosphere?
Replies: 819
Views: 814366

Re: Why Rocketry Doesn't Work in the Vacuum

Releasing gas into space does no work, creates no force. Actually the liquid fuel of the rocket engine is ignited in the combustion chamber of the rocket engine and becomes a hot gas that expands in the combustion chamber 1000+ times and has nowhere to go except through a nozzle connected to the co...
by Boethius
Sat Jun 08, 2013 2:40 pm
Forum: Apollo, and more space hoaxes
Topic: Does Rocketry Work beyond Earth's atmosphere?
Replies: 819
Views: 814366

Re: Why Rocketry Doesn't Work in the Vacuum

Flabbergasted wrote:Despite its immensely important implications, this discussion has been extended beyond any usefulness. There is nothing left to say which hasn´t been explained, reiterated and reworded over and over. I would call it a day and put a period to it.
I blinded them with science!

EOT? (End of Thread?)
by Boethius
Sat Jun 08, 2013 11:17 am
Forum: Apollo, and more space hoaxes
Topic: Does Rocketry Work beyond Earth's atmosphere?
Replies: 819
Views: 814366

Re: Why Rocketry Doesn't Work in the Vacuum

Waterjets are designed to work in water. Propellers work in water or air as they shift water or air to apply a force on the vehicle. Cars or bikes are designed to work on streets and use friction between wheels and street to apply force on the car or bike (and the street). And rocket engines work i...
by Boethius
Fri Jun 07, 2013 1:30 pm
Forum: Apollo, and more space hoaxes
Topic: Does Rocketry Work beyond Earth's atmosphere?
Replies: 819
Views: 814366

Re: Why Rocketry Doesn't Work in the Vacuum

Gas can't exist in a boundless, low-pressure, low-gravity vacuum like interstellar space. The gas will evidently continue to exist, when you eject it into zero pressure vacuum. It cannot POUFF POUFF disappear! BTW - what is low-gravity vacuum? I have a feeling you are not serious. Heiwa, gas is onl...
by Boethius
Fri Jun 07, 2013 10:31 am
Forum: Apollo, and more space hoaxes
Topic: Does Rocketry Work beyond Earth's atmosphere?
Replies: 819
Views: 814366

Re: Why Rocketry Doesn't Work in the Vacuum

So you're saying if a hatch opened and gas left the ship to equalize the pressure, with no extra force applied to the gas, this alone could potentially move the ship. Yes, say that 1 kg of compressed air (no combustion) is leaving the ship into vacuum through a nozzle at 100 m/s velocity, this alon...
by Boethius
Thu Jun 06, 2013 11:48 pm
Forum: Apollo, and more space hoaxes
Topic: Does Rocketry Work beyond Earth's atmosphere?
Replies: 819
Views: 814366

Re: Why Rocketry Doesn't Work in the Vacuum

I can see how a rocket is pulled towards a planet/star via gravitational attraction. But I don't see what this has to do with rocket propulsion. Gravity is just a force applied to the rocket by masses in space/vacuum. Same with a rocket engine attached to the rocket. It can also apply a force on th...
by Boethius
Thu Jun 06, 2013 11:02 pm
Forum: Apollo, and more space hoaxes
Topic: Does Rocketry Work beyond Earth's atmosphere?
Replies: 819
Views: 814366

Re: Why Rocketry Doesn't Work in the Vacuum

So Boethius, If you were somehow floating in space with a rifle in your hand, and fired that rifle, do you think you would feel any recoil? Hello CitronBleu, this question has been asked and answered in this thread but I will answer again Yes, a gun will recoil and no, this has nothing to do with h...
by Boethius
Thu Jun 06, 2013 1:43 pm
Forum: Apollo, and more space hoaxes
Topic: Does Rocketry Work beyond Earth's atmosphere?
Replies: 819
Views: 814366

Re: Why Rocketry Doesn't Work in the Vacuum

A rocket is not like a ship in the water. Don't you see? A ship is in contact with the water while a rocket isn't in contact with anything . The rocket in space/vaccum is in contact with other objects in space/vaccuum by gravity, i.e. with plenty things that you can see by light. If the rocket is c...
by Boethius
Thu Jun 06, 2013 7:48 am
Forum: Apollo, and more space hoaxes
Topic: Does Rocketry Work beyond Earth's atmosphere?
Replies: 819
Views: 814366

Re: Why Rocketry Doesn't Work in the Vacuum

Unfortunately, we have two problems here, Heiwa: 1- The "plenty hot gases" of the rockets would immediately be sucked out by the immensely superior force of the external vacuum. 2- With nothing to push against - and with the rocket's pressure now equalized with the external vacuum, there can be no ...
by Boethius
Wed Jun 05, 2013 10:12 pm
Forum: Apollo, and more space hoaxes
Topic: Does Rocketry Work beyond Earth's atmosphere?
Replies: 819
Views: 814366

Re: Why Rocketry Doesn't Work in the Vacuum

* Addendum Adding to the above-mentioned 'little problem', is the fact that rockets do indeed push against our relatively dense atmosphere (see the above 0,001 figure). Naturally, NASA will tell you otherwise - and this is one of their most infamous lies. They will repeat ad nauseam that their rock...