Author Topic: Proposed Orbital ATK Solid Rocket  (Read 53815 times)

Online FutureSpaceTourist

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Re: Proposed Orbital ATK Solid Rocket
« Reply #180 on: 03/10/2017 02:23 PM »
I thought Liberty was scrapped. Why use an image of a two-stage rocket if the Next-Generation Launcher has three stages?

Sorry, SN are just using a Liberty image to illustrate the article while making the point that the Next Generation Launcher has a number of similarities.

Offline quanthasaquality

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Re: Proposed Orbital ATK Solid Rocket
« Reply #181 on: 03/10/2017 02:57 PM »
I had a Zenit, or Cyclone, second stage on top of shuttle SRB segments in mind, but if Jeff Bezos wants to get into the liquid stage market, why not?

Offline Jim

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Re: Proposed Orbital ATK Solid Rocket
« Reply #182 on: 03/10/2017 04:05 PM »
I had a Zenit, or Cyclone, second stage on top of shuttle SRB segments in mind, but if Jeff Bezos wants to get into the liquid stage market, why not?

???   If if used Zenit or Cyclone, then it could not be used for gov't payload.  Bezos is not getting in the liquid stage market.  Supplying an engine is not the same as supplying a stage.

Offline Lars-J

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Re: Proposed Orbital ATK Solid Rocket
« Reply #183 on: 03/10/2017 04:42 PM »
New Jeff Foust article on state of Orbital's devdelopment:

http://spacenews.com/orbital-atk-expects-decision-on-new-rocket-by-early-2018/

Here's an excerpt:

Quote
Orbital ATK has released few details about what is known only as its “Next-Generation Launcher.” The vehicle would use solid-fuel lower stages based on space shuttle solid rocket motor segments developed by the company, as well as solid strap-on boosters. A liquid-oxygen, liquid-hydrogen upper stage would use a version of Blue Origin’s BE-3 engine that company is currently flying on its New Shepard suborbital vehicle.

I think calling it "LAST-generation launcher" would be more accurate than "Next-generation launcher". This paragraph in particular stood out:

Quote
If the program continues, Thompson said he expected the split in funding would continue at current levels, with the Air Force providing two thirds of the funding and Orbital ATK one third. He also expected the Air Force to make an “early block purchase” of some of the vehicles during the program’s development.

It's charming to see that they don't realize the market is changing around them. Or that they think the AF has no alternatives. ATK is indeed partying like its 1999.  :o
« Last Edit: 03/10/2017 04:43 PM by Lars-J »

Online edkyle99

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Re: Proposed Orbital ATK Solid Rocket
« Reply #184 on: 03/10/2017 04:43 PM »
New Jeff Foust article on state of Orbital's devdelopment:

http://spacenews.com/orbital-atk-expects-decision-on-new-rocket-by-early-2018/
So, Orbital ATK is going to let the Air Force makes its NGLV decision.

 - Ed Kyle

Online edkyle99

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Re: Proposed Orbital ATK Solid Rocket
« Reply #185 on: 03/10/2017 04:45 PM »
It's charming to see that they don't realize the market is changing around them. Or that they think the AF has no alternatives. ATK is indeed partying like its 1999.  :o
Show me a launch vehicle that does not depend in large part on Government money, one way or another.

 - Ed Kyle

Offline Lars-J

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Re: Proposed Orbital ATK Solid Rocket
« Reply #186 on: 03/10/2017 04:51 PM »
It's charming to see that they don't realize the market is changing around them. Or that they think the AF has no alternatives. ATK is indeed partying like its 1999.  :o
Show me a launch vehicle that does not depend in large part on Government money, one way or another.

Sure... but 2/3rd of its funds? And with a block buy? Those days are gone. This isn't 1999 anymore.
« Last Edit: 03/10/2017 04:51 PM by Lars-J »

Offline meberbs

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Re: Proposed Orbital ATK Solid Rocket
« Reply #187 on: 03/10/2017 05:04 PM »
It's charming to see that they don't realize the market is changing around them. Or that they think the AF has no alternatives. ATK is indeed partying like its 1999.  :o
Show me a launch vehicle that does not depend in large part on Government money, one way or another.

 - Ed Kyle
New Glenn.

Offline DarkenedOne

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Re: Proposed Orbital ATK Solid Rocket
« Reply #188 on: 03/10/2017 05:12 PM »
It's charming to see that they don't realize the market is changing around them. Or that they think the AF has no alternatives. ATK is indeed partying like its 1999.  :o
Show me a launch vehicle that does not depend in large part on Government money, one way or another.

 - Ed Kyle

The government is a large part of the space launch market, so basically what your saying would include even launch contracts. 

Offline TrevorMonty

Re: Proposed Orbital ATK Solid Rocket
« Reply #189 on: 03/10/2017 05:55 PM »
I had a Zenit, or Cyclone, second stage on top of shuttle SRB segments in mind, but if Jeff Bezos wants to get into the liquid stage market, why not?

???   If if used Zenit or Cyclone, then it could not be used for gov't payload.  Bezos is not getting in the liquid stage market.  Supplying an engine is not the same as supplying a stage.
The articles I've read on this LV give impression Blue will be providing completed upper stage.

Probably a version of NG 3rd stage. Should be low cost option for OA as long their stage is not radically different from NG 3rd stage. 

Both booster segments and US will be drawing from existing production lines so no need for high launch rate to support large manufacturing infrastructure. They also want to use SLS pad and infrastructure between SLS launches. This is why OA can make it profitable for 2-4 launches a year.

Online Hauerg

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Re: Proposed Orbital ATK Solid Rocket
« Reply #190 on: 03/10/2017 06:00 PM »
To me this sounds like: When the $$$ provided by the AF are gone so will be this paperrocket.

Online edkyle99

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Re: Proposed Orbital ATK Solid Rocket
« Reply #191 on: 03/11/2017 01:46 PM »
I thought Liberty was scrapped. Why use an image of a two-stage rocket if the Next-Generation Launcher has three stages?
Let's fix this repeated mis-information with an image of Orbital's real projected NGL lineup.

 - Ed Kyle
« Last Edit: 03/11/2017 01:47 PM by edkyle99 »

Online Kasponaut

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Re: Proposed Orbital ATK Solid Rocket
« Reply #192 on: 03/11/2017 02:00 PM »
Ed, can you ad the SLS 5 segment booster to this image/drawing. I wonder what the length of those segments are compared to these and each other 😊

Online edkyle99

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Re: Proposed Orbital ATK Solid Rocket
« Reply #193 on: 03/11/2017 02:13 PM »
Ed, can you ad the SLS 5 segment booster to this image/drawing. I wonder what the length of those segments are compared to these and each other 😊
Here is an image I put together last year that shows the smaller NGL beside Liberty, which would have used the five segment booster.

 - Ed Kyle

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Re: Proposed Orbital ATK Solid Rocket
« Reply #194 on: 03/11/2017 02:15 PM »
Thanks Ed. But what are the segment lenghts on those SLS 5 segment boosters?

Online edkyle99

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Re: Proposed Orbital ATK Solid Rocket
« Reply #195 on: 03/11/2017 02:19 PM »
Thanks Ed. But what are the segment lenghts on those SLS 5 segment boosters?
Same as 4-segment SRB except with one added 320 inch long center segment.

 - Ed Kyle
« Last Edit: 03/11/2017 02:20 PM by edkyle99 »

Online Kasponaut

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Re: Proposed Orbital ATK Solid Rocket
« Reply #196 on: 03/11/2017 02:24 PM »
Ok. Thank you 😊

Online edkyle99

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Re: Proposed Orbital ATK Solid Rocket
« Reply #197 on: 03/11/2017 04:02 PM »
Here's another illustration that shows the stages, including a wild estimate of the third stage configuration.

 - Ed Kyle

Offline quanthasaquality

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Re: Proposed Orbital ATK Solid Rocket
« Reply #198 on: 03/11/2017 06:06 PM »
I've been a proponent of a US rocket optimized for a somewhat smaller payload than the Atlas 401 for lower costs, and less rd-180 use. Looks like Ares 1 was just too big. Cut it in half, then you get a useful rocket.

Offline quanthasaquality

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Re: Proposed Orbital ATK Solid Rocket
« Reply #199 on: 03/12/2017 11:13 PM »
I wonder if a stretched h-2a upper stage would work out?

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