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Deep-Space NASA Rocket Engines Perform Most Powerful Ignition Test Yet
Space.com ^ | February 25, 2018 08:29am ET | Doris Elin Salazar, Contributor |

Posted on 02/25/2018 9:31:24 PM PST by BenLurkin

How can a rocket engine achieve more than a 100-percent thrust? Well, RS-25 engines were first designed more than 40 years ago, for use with NASA's space shuttle, and the power level they were capable of achieving at the time is the margin known as 100-percent thrust, according to NASA. RS-25 engines are former space shuttle engines that have been modified to perform more powerfully than ever before.

"Increased engine performance is crucial for enabling SLS missions to deep space as the rocket evolves to be larger and carry astronauts and heavy cargo on a single flight," NASA officials said in the statement.

When the space vehicle is assembled and ready for launch, four of these formidable engines will create a combined 2 million lbs. of thrust, according to the statement. And there's more: A pair of boosters on the SLS will work with the RS-25 engines to supply the rocket with a whopping 8 million lbs. of total thrust.

...

In addition to RS-25 ignition, the "brain" of the engine underwent testing. The new flight controller is one of the latest modifications to the engine design and will help provide precision control as it communicates with the rest of the SLS rocket. And in an ongoing effort to make SLS more affordable, operators also tested out a shock-absorbing component on Feb. 21, manufactured through 3D printing.

(Excerpt) Read more at space.com ...


TOPICS: Science
KEYWORDS: elonmusk; falcon9; falconheavy; nasa; rs25; space; spacex
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To: cymbeline

No thrust in an absolute vacuum, sorry.


41 posted on 03/05/2018 5:58:49 AM PST by Sontagged (Lord Jesus, please frogmarch Your enemies behind You as You've promised in Your Word)
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The level of ignorance being exhibited on this thread is causing my brain to rust.


42 posted on 03/05/2018 6:10:55 AM PST by Dust in the Wind (U S Troops Rock)
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To: Dust in the Wind

heh heh

My thought exactly!

Rockets scientists? I don’t think so...


43 posted on 03/05/2018 6:14:00 AM PST by jjotto ("Ya could look it up!")
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To: Sontagged

“No thrust in an absolute vacuum, sorry.”

Would someone else try to get through to this guy. I’m done with him.


44 posted on 03/05/2018 7:05:30 AM PST by cymbeline
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Comment #45 Removed by Moderator

To: Sontagged

I see. You’re one of those idiots. Not enough brains or education but with partial information enough to say stupid stuff.


46 posted on 03/05/2018 9:06:22 AM PST by CodeToad (Dr. Spock was an idiot!)
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To: messierhunter

https://www.youtube.com/watch?v=vtJT5gFwNjg

No air in a vacuum, no thrust in a vacuum; in the absolute vacuum of space there is no ignition, no fire, no lift, nothing.

Now please screw on your thinking cap, and remember the problem is the Deep State and all that they are doing.


47 posted on 03/05/2018 8:02:48 PM PST by Sontagged (Lord Jesus, please frogmarch Your enemies behind You as You've promised in Your Word)
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To: CodeToad

I see. You’re one of those anti Christian people who do not understand either what Christ said (”beware deception”) or that our problem, like Trump’s, is the deep state and all that they are funding.


48 posted on 03/05/2018 8:04:47 PM PST by Sontagged (Lord Jesus, please frogmarch Your enemies behind You as You've promised in Your Word)
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Comment #49 Removed by Moderator

To: messierhunter

The ‘no thrust in space’ meme is actually popular with 9-11 truthers and flat-earthers. I had no idea! They’re actually serious.


50 posted on 03/06/2018 10:33:22 AM PST by jjotto ("Ya could look it up!")
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To: messierhunter

Feeding the trolls is futile.


51 posted on 03/06/2018 10:35:55 AM PST by PapaBear3625 (Big governent is attractive to those who think that THEY will be in control of it.)
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To: messierhunter

Just reported you.

But let’s get real. Once you provide your own oxidizer, the “endless vacuum of space” would disperse those molecules across the universe just as fast as it would rip the skin off your face.

Here is a (paid?) stooge proving my point by trying to disprove it.
https://www.youtube.com/watch?v=-BsrzO7aXNs

Notice it is no longer a vacuum once ignition gasses filled the chamber...

Like I said, no thrust in a vacuum, no fire in a vacuum, etc.

Name calling doesn’t make your idiotic argument any more scientific.

BTW, I’m a girl.


52 posted on 03/06/2018 12:46:45 PM PST by Sontagged (Lord Jesus, please frogmarch Your enemies behind You as You've promised in Your Word)
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To: jjotto

You see, Jesus requires Christian conservatives to “test all things” and not to put our faith in man; and how are we to test things?

“Ye shall know them by their fruit”.

You know that Iraq’s Christians have been genocided since 911, right?

Christian genocide in Iraq is the fruit of Bush’s 3 Trillion Dollar War after 911.


53 posted on 03/06/2018 1:08:17 PM PST by Sontagged (Lord Jesus, please frogmarch Your enemies behind You as You've promised in Your Word)
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To: Sontagged

Rockets have been fired underwater in neutral buoyancy. No air there but the rockets will move. In space, the ignited propellants expand and push in all directions but escape in a controlled manner through the rockets nozzle pushing the rocket forward in the same way a balloon is pushed forward when the air is let out of it’s intake. You don’t think they haven’t fired rockets and measured their thrust in absolute vacuum here on Earth? Have you ever heard of the Space Power Facility at NASA...the world’s largest vacuum chamber?

What are the huge crowds watching go upwards when they gather at the Cape to watch the rockets go up? Why don’t they hit the “dome” and crash back down?

Just in case you wish to test me by using 1John4.....I Mike Mathis publically confess that Jesus is Messiah who is come in the flesh, indeed is the Living Torah of God in flesh! The faith is not threatened by the fact that the Earth is in deed an oblate spheroid and that we did manage to get to the moon. Rockets do fly in space by chemical means as well as by ionic propulsion(which is how space scientists were able to reach a few comets) December 1968 was in some ways more important than the moon landing in that the astronauts, in orbit about the moon read from Genesis chapter 1. That was when the Earth truly began to matter to the stars...as far as I believe!


54 posted on 03/06/2018 1:53:20 PM PST by mdmathis6 (Men and Devils can't out-"alinsksy" God! He knows where "all the bodies are buried!")
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To: Sontagged

You might have a point in certain respects considering the Iraqui war. Yet don’t mix politics with science and math. God hates dishonest weights and measures. God blesses unbiased science and yes 2+2 equals 4 and will always do so. As a matter of fact if Satan could have found away to undo 2+2=4 or for that matter, “for every action there is an equal but opposite reaction”(which is why rockets can move thru space) then he would have something on God.....but he can’t as nothing original can ever be initiated by Satan. He is a liar!


55 posted on 03/06/2018 2:00:15 PM PST by mdmathis6 (Men and Devils can't out-"alinsksy" God! He knows where "all the bodies are buried!")
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To: Sontagged

In real testing, the motor models fire in a vacuum and the vacuum is maintained by constantly pulling out the expressed gasses as they come from the test models, there-by maintaining the vacuum pressures as the scale model motors are tested. Geez everyone else is dumb but you....


56 posted on 03/06/2018 2:08:13 PM PST by mdmathis6 (Men and Devils can't out-"alinsksy" God! He knows where "all the bodies are buried!")
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To: mdmathis6

Except that’s not what happened in the vacuum test I posted. The gasses weren’t removed, therefore it was not a vacuum.

Again, no fire/ignition/thrust in a vacuum.

The skin would be ripped off your face in the “endless vacuum of space” with the same speed oxidizer molecules would disperse all over the “endless vacuum of space” before a fire could be lit; we’ve been hoaxed, sorry.

I didn’t use your pejorative “dumb”; I try never to confuse ignorance with stupidity.


57 posted on 03/06/2018 11:00:19 PM PST by Sontagged (Lord Jesus, please frogmarch Your enemies behind You as You've promised in Your Word)
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To: Sontagged
Are you familiar with the flow phenomenon of choked flow, where a chamber pressurized with compressible gas vented to a lower pressure has a maximum velocity at the choke point of the vent? And that this behavior has been demonstrated time and time again since the 1880's.
58 posted on 03/07/2018 7:04:50 AM PST by kosciusko51
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To: kosciusko51

Except the video I linked, they admitted they’d lost the vacuum after ignition, so it was just another staged dumbshow.

Again, in the “endless absolute vacuum of ‘space’” there is no ignition, only instanteous skin ripping off your face and dispersion of molecules.


59 posted on 03/07/2018 12:05:38 PM PST by Sontagged (Lord Jesus, please frogmarch Your enemies behind You as You've promised in Your Word)
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To: Sontagged

I’m not talking about the video, I’m asking if you accept the principle that gas expanding from a chamber has a maximum velocity, and therefore, a maximum flow rate through an orifice.


60 posted on 03/07/2018 12:08:03 PM PST by kosciusko51
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