Ares I DM-2 Motor Test - Aug 31, 2010

[JosephB]

Anyone know how long the cool down period lasts?

[gladiator1332]

Check out ATK's "trailer" for DM-2!

What cost more, the DM-2 test or that video? 

[e of pi]

What cost more, the DM-2 test or that video? 

Personally I just love the line, "Soon everyone will believe!" It's like a soon as this test happens we'll all wise up and see how critical a five-segment SRB is to everything and they'll show those fools who laughed at them at the academy.

...Perhaps I read too many webcomics about mad scientists.

[Hauerg]

So ATK is filming a glossy commercial for a static test firing.
No wonder that space has been that expensive all those years..

[e of pi]

So ATK is filming a glossy commercial for a static test firing.
No wonder that space has been that expensive all those years..

But without the commercial, how will they show them all?

[TheFallen]

So ATK is filming a glossy commercial for a static test firing.
No wonder that space has been that expensive all those years..

The question is: Does that Tom Cruise-wannabe actually work at ATK or did the company go to an online casting website to get this actor?

[JosephB]

Was trying to find current ATK info on DM-2 without luck but came across this dated document that was interesting, with some neat images. Delete if you feel the need to.

[Calphor]

So ATK is filming a glossy commercial for a static test firing.
No wonder that space has been that expensive all those years..

The question is: Does that Tom Cruise-wannabe actually work at ATK or did the company go to an online casting website to get this actor?

He actually works at ATK.

[zerm]

So ATK is filming a glossy commercial for a static test firing.
No wonder that space has been that expensive all those years..

It's corporate PR and every gov. contractor does it- it's not a big deal and not a big expence. Hell, I could make a similar quality vid. with the equipment I have here in my office and $75 worth of editing software. Space is expensive because cheap gets people killed, not because big contractors do PR videos. Please- let us find some other nit to pick.

[Space Pete]

Ignition time has changed to 10:27 AM CDT/3:27 PM GMT.

[Chris Bergin]

I'll have a look at this thread late tonight or early tomorrow to see about converting it to the live coverage pages, but we'll keep it on the Ares section regardless (I'll mirror a direction post in the live section).

Should be fun if the first firing was anything to go by (guy taking the key to the firing room etc).

[Chris Bergin]

Check out ATK's "trailer" for DM-2!

That's actually a really good video, very clever with the scene where the engineer is working at his desk, thinking about a "better future" with the photo of his family.

ATK also do the best Shuttle FRR presentations too

[Space Invaders]

From the objectives list:

"The [new materials used for the joints] will save significant weight".

Do we know exactly how much weight that is? And is this improvement specific to the 5-segment SRB, or can it be applied to the 4-seg as well?

[Downix]

From the objectives list:

"The [new materials used for the joints] will save significant weight".

Do we know exactly how much weight that is? And is this improvement specific to the 5-segment SRB, or can it be applied to the 4-seg as well?

IIRC, the work done on the 5-seg can carry over to the 4-seg, altho with the SLS some of the work will no longer be needed, like nozzles able to steer.

[edkyle99]

IIRC, the work done on the 5-seg can carry over to the 4-seg, altho with the SLS some of the work will no longer be needed, like nozzles able to steer.

SLS, like STS, will need TVC on the solids.  What it won't need is independent roll control, like Ares I.

 - Ed Kyle

[TrueBlueWitt]

IIRC, the work done on the 5-seg can carry over to the 4-seg, altho with the SLS some of the work will no longer be needed, like nozzles able to steer.

SLS, like STS, will need TVC on the solids.  What it won't need is independent roll control, like Ares I.

 - Ed Kyle

According to previous work by the DIRECT team.. they have Sufficient TVC just gimballing SSMEs.. TVC is NOT required on the solids.

I would post a link, but the search engine on this site is just attrocious.. I have NEVER found anything I was looking for with it!

[PahTo]

I've raised this question in a couple other threads, so I'll try here.

What is the best performance we can expect from an "uprated" (R)SRM?
That is, with reduced or no TVC hardware, and using HTPB instead of PBAN, what will/can the Isp be (recoverable 4-seg booster)?

(Bonus:  is it true that HTPB is actually a lower performance, but better Isp because it burns cooler and thus doesn't need such heavy casing?)

Thanks!

[Chris Bergin]

I would post a link, but the search engine on this site is just attrocious.. I have NEVER found anything I was looking for with it!

Some people seem to be able to work out the trick of the forum search, but I'm the same as you Mark is working on a new forum in the background, so hopefully that'll sort it out.

[Lars_J]

SLS, like STS, will need TVC on the solids.  What it won't need is independent roll control, like Ares I.

 - Ed Kyle

According to previous work by the DIRECT team.. they have Sufficient TVC just gimballing SSMEs.. TVC is NOT required on the solids.

First of all "The DIRECT team" is NOT an official authority on the matter. They are not the NASA SLS design team.

You've got to take everything the DIRECT team says with a pinch of salt. Sure, they claim to have NASA engineers that have helped them with their numbers. But until those individuals step forward, who knows? And even if they are who they claim to be, perhaps they are not 100% correct? A lot of what they say make a lot of sense, but you have to be skeptical.

[edkyle99]

IIRC, the work done on the 5-seg can carry over to the 4-seg, altho with the SLS some of the work will no longer be needed, like nozzles able to steer.

SLS, like STS, will need TVC on the solids.  What it won't need is independent roll control, like Ares I.

 - Ed Kyle

According to previous work by the DIRECT team.. they have Sufficient TVC just gimballing SSMEs.. TVC is NOT required on the solids.

No big throat solid has ever used a fixed nozzle, to my knowledge.  Consider Titan III, Titan 34D, Titan IVA, Titan IVB, STS, Ariane 5, H-II, H-IIA, H-IIB, and GSLV Mk3, for starters. 

 - Ed Kyle