Did man land on the moon?

[Pudding Time]

No...you can moderate the amount of thrust.

Then why is NASA spending large amounts of money to develope a technology which they already had almost 50 years ago?

Building an Engine that Can Throttle Down | Universe Today

Here on Earth, we've gotten used to the concept of a car's accelerator pedal. Put it down a little, and the car accelerates slowly. Put the "pedal to the metal" and you'll go faster. Imagine trying to park your car when you only have two choices: off and full speed. Developing a similar concept for a rocket is very difficult. Most rockets are designed to go at full blast, or nothing at all.

A variable acceleration rocket would tremendously useful for landing on the Moon. Instead of firing the landing rockets in short bursts, astronauts could throttle down for a nice smooth landing. But building an engine like this is harder than it sounds.
NASA researchers think they've got a prototype engine that should give the variable rate of acceleration astronauts are looking for. The newly developed Common Extensible Cryogenic Engine (CECE) is a variant on the RL10 engine that boosted the Surveyor robot landers to the Moon back in 1966-68. The RL10 is designed to only go full throttle, so adding the variable thrust was difficult.
The main problem is that changing the throttle affects how the whole engine functions. At low power, liquid hydrogen can slow and vapourize in the coolant lines. This might cause the engine to stall. During one test, the experimenters discovered that the engine "chugged", vibrating 100 times a second. It turned out oxygen vapours were forming on the injector plate, inhibiting normal flow, causing the vibrations.
It's not ready for space yet, but CECE might eventually become part of the design of a future lunar lander. The astronauts returning to the Moon will be very appreciative.
Original Source:Science@NASA

 

[COOL_BREEZE2]

No...you can moderate the amount of thrust.

It's not the size of the ship. It's the motion in the ocean.

 

[All Else Failed]

Then why is NASA spending large amounts of money to develope a technology which they already had almost 50 years ago?

Building an Engine that Can Throttle Down | Universe Today

I don't know. Maybe they're just trying to make it better or something. Or maybe they're doing something with it that we don't know about.

 

[COOL_BREEZE2]

great stuff peeps,

now about the earth being flat.....

Was only a matters of time. How bout creating a thread for that? You know you want to.

 

[COOL_BREEZE2]

I don't know. Maybe they're just trying to make it better or something. Or maybe they're doing something with it that we don't know about.

You know what I think?

I think one of the main reasons behind the "moon/space missions" was to set up satellites that we know of today that are used for global surveillance, satellite signal etc.

Food for thought. Anyone?

 

[Pudding Time]

I don't know. Maybe they're just trying to make it better or something. Or maybe they're doing something with it that we don't know about.

What part of this didn't you understand?

A variable acceleration rocket would tremendously useful for landing on the Moon. Instead of firing the landing rockets in short bursts, astronauts could throttle down for a nice smooth landing.

 

[Ashl33]

no man did not walk on the moon.
a few years ago i was watching a show on the discovery channel about this with my mom, and they showed a video where the flag on the moon was moving.
AND as far as i know, there is no oxygen on the moon so why the heck would there be wind blowing ?
** the point of the flag blowing was the point the show was trying to get across.
BUT this conversation can be very very biased

 

[Goat Whisperer]

no man did not walk on the moon.
a few years ago i was watching a show on the discovery channel about this with my mom, and they showed a video where the flag on the moon was moving.
AND as far as i know, there is no oxygen on the moon so why the heck would there be wind blowing ?
** the point of the flag blowing was the point the show was trying to get across.
BUT this conversation can be very very biased

If you had read any part of this thread, newb, U would of realised why this is no longer good evidence by now.

 

[Ashl33]

If you had read any part of this thread, newb, U would of realised why this is no longer good evidence by now.

and you areee??? underaged thats right, thats right.:clap

 

[Ashl33]

and im not a "newb" just because i dont post my life away twenty million times a day doesnt mean anything.
i read, take it in...
ive been on this site for sometime now...

 

[livvy7678]

no man did not walk on the moon.
a few years ago i was watching a show on the discovery channel about this with my mom, and they showed a video where the flag on the moon was moving.
AND as far as i know, there is no oxygen on the moon so why the heck would there be wind blowing ?
** the point of the flag blowing was the point the show was trying to get across.
BUT this conversation can be very very biased

and you areee??? underaged thats right, thats right.:clap

Before you say anything else you might wanna read the FIRST page of the thread which says this

Quote:
The Apollo flag-raising also provided NASA engineers with an interesting technical challenge. They designed a flagpole with a horizontal bar allowing the flag to "fly" without the benefit of wind to overcome the effects of the moon's lack of an atmosphere. Other factors considered in the design were weight, heat resistance, and ease of assembly by astronauts whose space suits restricted their range of movement and ability to grasp items.

 

[Goat Whisperer]

and im not a "newb" just because i dont post my life away twenty million times a day doesnt mean anything.
i read, take it in...
ive been on this site for sometime now...

Just because you signed up a while ago, doesn't make you non-newbish, because you haven't posted anything at all. To me it doesn't matter how long you've been here, it matters how much you've contributed, and you haven't contributed much. newb.

 

[skyblue]

no man did not walk on the moon.
a few years ago i was watching a show on the discovery channel about this with my mom, and they showed a video where the flag on the moon was moving.
AND as far as i know, there is no oxygen on the moon so why the heck would there be wind blowing ?
** the point of the flag blowing was the point the show was trying to get across.
BUT this conversation can be very very biased

there is gravity on the moon......not much i know but gravity all the same......and yes......there is wind in space

 

[Pudding Time]

Livvy, I believe Ashl33 said the flag was moving. The horizontal bar wouldn't allow this.

I have not seen the video Ashl33 is talking about. But if you want to have a go at someone for not reading everything, you better read everything yourself.

 

[Pudding Time]

Just because you signed up a while ago, doesn't make you non-newbish, because you haven't posted anything at all. To me it doesn't matter how long you've been here, it matters how much you've contributed, and you haven't contributed much. newb.

And to me, no matter how many posts someone has made here, they don't deserve to be harrassed.

 

[livvy7678]

And to me, no matter how many posts someone has made here, they don't deserve to be harrassed.

No, they don't do they.

 

[Goat Whisperer]

Like you guys haven't harassed me before...

 

[Pudding Time]

No, they don't do they.

No, they don't.

Like you guys haven't harassed me before...

Where did I do this?

 

[Goat Whisperer]

Where did I do this?

Nvm, I was thinking about someone else sorry.

 

[COOL_BREEZE2]

*Ahem*

All good points folks BUT...........

Let's not get this out of hand and regret it.

Let's try to get back on topic and avoid the personal you know what.