Author Topic: The future of the AJ10  (Read 18226 times)

Offline the_roche_lobe

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The future of the AJ10
« on: 02/09/2010 05:22 am »
Delta II - going
Delta IV 'lite' - stillborn
Shuttle - going
Constellation - going/gone

Is there a future for the long running AJ10 family?
Is it even still in production?

P

Offline Jim

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Re: The future of the AJ10
« Reply #1 on: 02/09/2010 08:45 am »
Delta II - going
Delta IV 'lite' - stillborn
Shuttle - going
Constellation - going/gone

Is there a future for the long running AJ10 family?
Is it even still in production?


Production for Delta II ended years ago.

Offline Downix

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Re: The future of the AJ10
« Reply #2 on: 02/09/2010 10:14 am »
Delta II - going
Delta IV 'lite' - stillborn
Shuttle - going
Constellation - going/gone

Is there a future for the long running AJ10 family?
Is it even still in production?

P

It is still available to purchase.  Its systems are such that I would not be surprised if LM, Boeing or SNC utilizes it in their crew vehicle.  I know if I was looking at crew vehicle development it would be at the top of my list.
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Offline kevin-rf

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Re: The future of the AJ10
« Reply #3 on: 02/09/2010 01:17 pm »
It is still available to purchase.  Its systems are such that I would not be surprised if LM, Boeing or SNC utilizes it in their crew vehicle.  I know if I was looking at crew vehicle development it would be at the top of my list.

With 9 solids? Look at the January 1997 fireball... The AJ-10 on top of an Atlas or Delta-IV might make more sense.
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Offline Downix

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Re: The future of the AJ10
« Reply #4 on: 02/10/2010 02:34 am »
It is still available to purchase.  Its systems are such that I would not be surprised if LM, Boeing or SNC utilizes it in their crew vehicle.  I know if I was looking at crew vehicle development it would be at the top of my list.

With 9 solids? Look at the January 1997 fireball... The AJ-10 on top of an Atlas or Delta-IV might make more sense.
huh??
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Offline Nick L.

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Re: The future of the AJ10
« Reply #5 on: 02/10/2010 04:26 pm »
It is still available to purchase.  Its systems are such that I would not be surprised if LM, Boeing or SNC utilizes it in their crew vehicle.  I know if I was looking at crew vehicle development it would be at the top of my list.

With 9 solids? Look at the January 1997 fireball... The AJ-10 on top of an Atlas or Delta-IV might make more sense.

Kevin, I think he's talking about the AJ10 engine, not Delta II.
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Offline Downix

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Re: The future of the AJ10
« Reply #6 on: 02/10/2010 04:43 pm »
It is still available to purchase.  Its systems are such that I would not be surprised if LM, Boeing or SNC utilizes it in their crew vehicle.  I know if I was looking at crew vehicle development it would be at the top of my list.

With 9 solids? Look at the January 1997 fireball... The AJ-10 on top of an Atlas or Delta-IV might make more sense.

Kevin, I think he's talking about the AJ10 engine, not Delta II.
That is what I took it as, hence why the "Huh?"
chuck - Toilet paper has no real value? Try living with 5 other adults for 6 months in a can with no toilet paper. Man oh man. Toilet paper would be worth it's weight in gold!

Offline kevin-rf

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Re: The future of the AJ10
« Reply #7 on: 02/10/2010 06:30 pm »
My miss read, I thought you ment you would start with the Delta II.

I agree the AJ-10 would be excellent. It has a history that dates back further than the RL-10.
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Offline Ben the Space Brit

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Re: The future of the AJ10
« Reply #8 on: 02/10/2010 07:24 pm »
OSC are interested in having a relight-capable upper stage for Taurus-II.  Aerojet have offered AJ-10.  I also suspect that AJ-10 may find its way into at least one (Lockheed's) commercial crew vehicle proposal.
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Offline Downix

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Re: The future of the AJ10
« Reply #9 on: 02/11/2010 08:05 pm »
Is there a future for the long running AJ10 family?
Is it even still in production?

A version of the AJ10 powers the Shuttle orbiter OMS units.  This engine is being further developed to power the Orion service module. 

Oh wait.  There isn't going to be an Orion service module. 

Never mind. 

 - Ed Kyle
But there will be a Dream Chaser, Boeing/Bigelow's "Orion Lite" and whatever LM is working on, all of which are prime canidates for the AJ-10.
chuck - Toilet paper has no real value? Try living with 5 other adults for 6 months in a can with no toilet paper. Man oh man. Toilet paper would be worth it's weight in gold!

Offline Patchouli

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Re: The future of the AJ10
« Reply #10 on: 02/12/2010 01:22 am »
Is there a future for the long running AJ10 family?
Is it even still in production?

A version of the AJ10 powers the Shuttle orbiter OMS units.  This engine is being further developed to power the Orion service module. 

Oh wait.  There isn't going to be an Orion service module. 

Never mind. 

 - Ed Kyle
But there will be a Dream Chaser, Boeing/Bigelow's "Orion Lite" and whatever LM is working on, all of which are prime canidates for the AJ-10.

Doesn't Dreamchaser have an OMS based off SS1/SS2's propulsion system?

But I can see the AJ10 having a future on a lunar variant of Dragon or a commercial cargo tug.
« Last Edit: 02/12/2010 02:43 am by Patchouli »

Offline Downix

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Re: The future of the AJ10
« Reply #11 on: 02/12/2010 01:00 pm »
Does anyone have a good manual of the AJ-10, now I am curious to see what it can do.
chuck - Toilet paper has no real value? Try living with 5 other adults for 6 months in a can with no toilet paper. Man oh man. Toilet paper would be worth it's weight in gold!

Offline mmeijeri

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Re: The future of the AJ10
« Reply #12 on: 02/12/2010 01:02 pm »
But I can see the AJ10 having a future on a lunar variant of Dragon or a commercial cargo tug.

Wouldn't Kestrel be more likely?
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Offline Danderman

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Re: The future of the AJ10
« Reply #13 on: 02/12/2010 03:10 pm »
But I can see the AJ10 having a future on a lunar variant of Dragon or a commercial cargo tug.

Wouldn't Kestrel be more likely?

AFAIK, Kestral is a kerolox system, not good for long term use.

Offline mmeijeri

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Re: The future of the AJ10
« Reply #14 on: 02/12/2010 03:15 pm »
AFAIK, Kestral is a kerolox system, not good for long term use.

At L1/L2 and with good insulation that might not be too much of a problem. Or else with a kerosene/peroxide variant. Not that AJ-10 would not be great, but SpaceX seems to prefer to build things themselves.
« Last Edit: 02/13/2010 07:08 am by mmeijeri »
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Online Robotbeat

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Re: The future of the AJ10
« Reply #15 on: 02/15/2010 07:59 pm »
AFAIK, Kestral is a kerolox system, not good for long term use.

At L1/L2 and with good insulation that might not be too much of a problem. Or else with a kerosene/peroxide variant. Not that AJ-10 would not be great, but SpaceX seems to prefer to build things themselves.
Only if they can't get a good enough price from outside, which happens a lot when lots of people are used to juicy fat-margin contracts.
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Offline Patchouli

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Re: The future of the AJ10
« Reply #16 on: 02/15/2010 10:27 pm »
The AJ10 could still find use by Orbital on future versions of Cygnus.
A crewed variant could make use of a higher thrust OMS system and they too could become interested in a lunar capable vehicle.
OSC seems to prefer to not reinvent something if it can be bought off the shelf.

Offline mmeijeri

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Re: The future of the AJ10
« Reply #17 on: 02/16/2010 09:16 am »
AJ-10 is my favourite for near-term storable propulsion, but a kerosene/peroxide Merlin and Kestrel would be great too. If you wanted to use this for landers you might want a pump-fed version anyway. If you're going to develop a new engine, you may as well go with something non-toxic.
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Offline Vahe231991

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Re: The future of the AJ10
« Reply #18 on: 05/17/2021 03:37 am »
The Orion spacecraft that was first launched on December 5, 2014, relies on the AJ10 for primary propulsion. Therefore, the AJ10 is still in use even though the Delta II that used an AJ10 as the rocket motor for the second stage was retired in 2018.

Link:
https://newatlas.com/nasa-test-fire-service-module-engine/60944/
https://space.skyrocket.de/doc_sdat/orion-mpcv.htm

Offline Jim

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Re: The future of the AJ10
« Reply #19 on: 05/17/2021 11:47 am »
The Orion spacecraft that was first launched on December 5, 2014, relies on the AJ10 for primary propulsion. Therefore, the AJ10 is still in use even though the Delta II that used an AJ10 as the rocket motor for the second stage was retired in 2018.


No, it had no active service module and hence no AJ10

Tags: aj10 Orion SLS 
 

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