Skylon Sabre tests

"Key tests for Skylon spaceplane project"

http://www.bbc.co.uk/news/science-environment-17864782

Anthony

In article , says...

"Key tests for Skylon spaceplane project"

http://www.bbc.co.uk/news/science-environment-17864782

From the above:
The test stand will not validate the full Sabre propulsion
system, but simply its enabling technology - a special type
of pre-cooler heat exchanger.

Good luck to them, but they are still a *long* way from producing an
engine that works.

Jeff
--
" Ares 1 is a prime example of the fact that NASA just can't get it
up anymore... and when they can, it doesn't stay up long. "
- tinker

Anthony Frost wrote:
"Key tests for Skylon spaceplane project"
http://www.bbc.co.uk/news/science-environment-17864782

For the "genuine article" how do they propose re-chilling the helium -
are they going to run it through the hydrogen tanks?

rick jones
--
a wide gulf separates "what if" from "if only"
these opinions are mine, all mine; HP might not want them anyway...
feel free to post, OR email to rick.jones2 in hp.com but NOT BOTH...

In message
Rick Jones wrote:

Anthony Frost wrote:
"Key tests for Skylon spaceplane project"
http://www.bbc.co.uk/news/science-environment-17864782

For the "genuine article" how do they propose re-chilling the helium -
are they going to run it through the hydrogen tanks?

Almost, heat exchanger in the hydrogen feed to the engine rather than
the tank itself I believe.

Anthony

Anthony Frost wrote:
In message
Rick Jones wrote:
For the "genuine article" how do they propose re-chilling the
helium - are they going to run it through the hydrogen tanks?

Almost, heat exchanger in the hydrogen feed to the engine rather
than the tank itself I believe.

Pity they didn't include that in the mock-up to give it greater
fidelity. That is the "flip side" of making the pre-cooler work
right?

rick
--
firebug n, the idiot who tosses a lit cigarette out his car window
these opinions are mine, all mine; HP might not want them anyway...
feel free to post, OR email to rick.jones2 in hp.com but NOT BOTH...

On 28/04/2012 7:11 AM, Rick Jones wrote:
Anthony wrote:
In
Rick wrote:
For the "genuine article" how do they propose re-chilling the
helium - are they going to run it through the hydrogen tanks?

Almost, heat exchanger in the hydrogen feed to the engine rather
than the tank itself I believe.

Pity they didn't include that in the mock-up to give it greater
fidelity. That is the "flip side" of making the pre-cooler work
right?

rick

When you have NASA style $ billions to throw at a project, you can build
everying immediately, and probably waste quite a lot in the process.

The current RE tests are to validate the precooler concept. Success in
the tests liberates a $ few hundred million of funding for further R&D.

Sylvia.

In article , lid
says...

On 28/04/2012 7:11 AM, Rick Jones wrote:
Anthony wrote:
In
Rick wrote:
For the "genuine article" how do they propose re-chilling the
helium - are they going to run it through the hydrogen tanks?

Almost, heat exchanger in the hydrogen feed to the engine rather
than the tank itself I believe.

Pity they didn't include that in the mock-up to give it greater
fidelity. That is the "flip side" of making the pre-cooler work
right?

rick

When you have NASA style $ billions to throw at a project, you can build
everying immediately, and probably waste quite a lot in the process.

The current RE tests are to validate the precooler concept. Success in
the tests liberates a $ few hundred million of funding for further R&D.

How do you eat an elephant? One bite at a time.

They've got a lot of bites ahead of them.

Jeff
--
" Ares 1 is a prime example of the fact that NASA just can't get it
up anymore... and when they can, it doesn't stay up long. "
- tinker

In message
Rick Jones wrote:

Anthony Frost wrote:
In message
Rick Jones wrote:
For the "genuine article" how do they propose re-chilling the
helium - are they going to run it through the hydrogen tanks?

Almost, heat exchanger in the hydrogen feed to the engine rather
than the tank itself I believe.

Pity they didn't include that in the mock-up to give it greater
fidelity. That is the "flip side" of making the pre-cooler work
right?

If you've got a billion currency units to donate so they can build an
isolated test facility and complete engine I'm sure they'd be delighted.
The current site is in the middle of a business park and the condensed
air is being used in a 1950s jet engine so liquid hydrogen isn't an
option. In any case, recooling helium being used in a chiller is a
common place activity that doesn't need demonstrating at this time.

Anthony

On Apr 28, 2:55*am, Anthony Frost wrote:
In message
* * * * * Rick Jones wrote:

* Anthony Frost wrote:
* In message
* * * * * * Rick Jones wrote:
* * For the "genuine article" how do they propose re-chilling the
* * helium - are they going to run it through the hydrogen tanks?
*
* Almost, heat exchanger in the hydrogen feed to the engine rather
* than the tank itself I believe.
*
* Pity they didn't include that in the mock-up to give it greater
* fidelity. *That is the "flip side" of making the pre-cooler work
* right?

If you've got a billion currency units to donate so they can build an
isolated test facility and complete engine I'm sure they'd be delighted.
The current site is in the middle of a business park and the condensed
air is being used in a 1950s jet engine so liquid hydrogen isn't an
option. In any case, recooling helium being used in a chiller is a
common place activity that doesn't need demonstrating at this time.

* * * * * *Anthony


Sylvia Else has offered billions of our hard earned loot, but
apparently even that's not sufficient.

If this Skylon was even 75% doable, I'm sure that MI6, our Pentagon
and other military complex infrastructures around the world that get
to spend as much as they like, would have been funding this one from
the very get-go.

A hybrid jet+fusion engine or even a jet+fission option might be the
way to go, as otherwise LH2+LOx has certain limitations for other than
spendy joy-rides that are not even ISS capable.

BTW; helium is going to start getting very spendy, not that anyone
really seems to care what the past, ongoing and future release of
helium has been doing to our environment and impacting the protective
ozone layer.

http://groups.google.com/groups/search
http://translate.google.com/#
Brad Guth, Brad_Guth, Brad.Guth, BradGuth, BG / “Guth Usenet”