Author Topic: New Glenn: Blue Origin Announcement of Orbital Rocket Plan  (Read 281637 times)

Offline TinkerLaspeyrs

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Re: New Glenn: Blue Origin Announcement of Orbital Rocket Plan
« Reply #1160 on: 10/18/2018 10:19 AM »
As a redundant economist I think they are tube/plate heat exchangers for the building air conditioning. So nothing rocketory but yes they will be pretty cool and maybe out in a space on the roof. An amateur psychologist might suspect that subliminally you already knew this by your 'Pretty cool' comment. ;D
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Offline b0objunior

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Re: New Glenn: Blue Origin Announcement of Orbital Rocket Plan
« Reply #1161 on: 10/18/2018 10:35 AM »
As a redundant economist I think they are tube/plate heat exchangers for the building air conditioning. So nothing rocketory but yes they will be pretty cool and maybe out in a space on the roof. An amateur psychologist might suspect that subliminally you already knew this by your 'Pretty cool' comment. ;D
Interesting, learned something today.

Online brickmack

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Re: New Glenn: Blue Origin Announcement of Orbital Rocket Plan
« Reply #1162 on: 10/20/2018 06:03 PM »
With regard to the direct GEO/performance calculation issue, NASA LSP was told recently NG could do 14.0 tons to Earth escape (ESL2). Naively scaling that based on other launch vehicles with hydrolox upper stages, GTO payload capacity is probably in the vicinity of 18-24 tons, but maybe someone can calculate more accurately using the 14 ton figure to calibrate.

Offline McDew

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Re: New Glenn: Blue Origin Announcement of Orbital Rocket Plan
« Reply #1163 on: 10/20/2018 11:27 PM »
Clay Mowry was the featured speaker at the WSBR luncheon on Friday.  He specifically stated that the New Glen vehicle with 1st stage reusability could meet all 9 reference missions for the EELV LSA contract.  Stated that the design changes to the second stage (two BE-3U engines and stretched tank) were done specifially to meet these requirements.  Plans for a 3rd stage are no longer needed near term and is deferred pending future requirements.

Offline Prettz

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Re: New Glenn: Blue Origin Announcement of Orbital Rocket Plan
« Reply #1164 on: 10/21/2018 02:14 AM »
Clay Mowry was the featured speaker at the WSBR luncheon on Friday.  He specifically stated that the New Glen vehicle with 1st stage reusability could meet all 9 reference missions for the EELV LSA contract.  Stated that the design changes to the second stage (two BE-3U engines and stretched tank) were done specifially to meet these requirements.  Plans for a 3rd stage are no longer needed near term and is deferred pending future requirements.
So the alleged difficulty of finishing BE-4U in time was a secondary consideration, at best?

Offline Chasm

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Re: New Glenn: Blue Origin Announcement of Orbital Rocket Plan
« Reply #1165 on: 10/21/2018 02:39 AM »
Hard to tell from the outside.
BE-4 took slightly longer than expected and required the big test stand. BE-3 fits the small stand, it was developed on it. Much easier to work in parallel.

Another idea is that the date at wich the new rockets have to be able to deliver to all reference orbits was earlier as expected. So no time to do BE-4U now and then follow with the BE-3U 3rd stage for the high performance targets.

Then there is always customer demand. After the NG reveal there must have been a lot of talks with prospective customers. What crazy ideas did they have? Who is (probably) willing to pay for them? Blue certainly has ideas what to do with NG - if they can align them with customer demand things should get a bit more streamlined. See the 5 meter fairing, no actual need to build and qualify it.

I still think that Jeff is a bit more likely than Elon to go the quid pro quo route. He certainly has the money and tries to play the long game. Getting what was talked about is as good as getting ammunition because the other side did not deliver.  All that of course only as long as it is not too much of a detour from the internal goals Blue has for the rockets and as an organisation.

Offline Rocket Surgeon

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Re: New Glenn: Blue Origin Announcement of Orbital Rocket Plan
« Reply #1166 on: 10/22/2018 03:39 AM »
With regard to the direct GEO/performance calculation issue, NASA LSP was told recently NG could do 14.0 tons to Earth escape (ESL2). Naively scaling that based on other launch vehicles with hydrolox upper stages, GTO payload capacity is probably in the vicinity of 18-24 tons, but maybe someone can calculate more accurately using the 14 ton figure to calibrate.

Hmmm, do you have a source for this? I've suspected for a bit that the numbers for New Glenn are a bit sandbagged ,for several reasons.

Online envy887

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Re: New Glenn: Blue Origin Announcement of Orbital Rocket Plan
« Reply #1167 on: 10/22/2018 01:15 PM »
With regard to the direct GEO/performance calculation issue, NASA LSP was told recently NG could do 14.0 tons to Earth escape (ESL2). Naively scaling that based on other launch vehicles with hydrolox upper stages, GTO payload capacity is probably in the vicinity of 18-24 tons, but maybe someone can calculate more accurately using the 14 ton figure to calibrate.

NG has a heavier upper stage and lower ISP than other hydrolox upper stage LVs, so the upper end of your estimate is probably more accurate. Assuming that's 14 metric tonnes, I get around 21 tonnes to GTO assuming booster reuse.

Do you know if that was with or without booster reuse?

Offline Llian Rhydderch

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Re: New Glenn: Blue Origin Announcement of Orbital Rocket Plan
« Reply #1168 on: 11/05/2018 03:43 AM »
BE-3U is no longer tap-off, they changed to expander a while back. First time we (the public) deduced that was a few weeks ago when a BE-3U image...

Could be; but the Wikipedia article on the engines seems to have figured out it was an expander cycle in mid-August, based on a Blue Origin source dated August 10th.

BE-3, section BE-3U
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