Regardless, the point about politics, but yes I remembered it was P&W
after sending the message but didn't know they had a number for it being a
demonstrator.
On Tue, Mar 31, 2020 at 8:50 AM David Gregory <david.c.gregory@xxxxxxxxx>
wrote:
It was P&W who had the XLR-129 and lost the SSME contract.
On Mon, Mar 30, 2020 at 6:32 PM roxanna Mason <rocketmaster.ken@xxxxxxxxx>
wrote:
If my memory is correct, back when NASA put out the SSME RFQ Aerojet had
an operational 2/3 scale closed cycle H2/O2 engine while Rocketdyne only
had a small subscale uncooled combustion device as their demonstrator but
Rocketdyne got the contract anyway. Another example of politics
superseding engineering? NASA threw Aerojet a bone with the OMS contract.
Reminds me of Apollo, Rocketdynes gets all the big engine contracts,i.e.
F-1 and J-2, and Aerojet only gets the SPS.
On Mon, Mar 30, 2020 at 4:27 PM William Claybaugh <wclaybaugh2@xxxxxxxxx>
wrote:
Elliot:
(Then) Aerojet demonstrated in the early ‘90’s an SSME TCA using their
“platelet” technology: basically multiple thin sheets of an appropriate
alloy diffusion bonded under the correct atmosphere and pressure conditions.
That TCA had many more and smaller passages than the Rocketdyne unit;
would—they said—have run cooler and cost less than $1 m each in an order of
20....according to AJ in sell mode.
The Shuttle OMS engines used the same technology for the injector so
there is an existence proof that it works.
I have never heard of using aluminum where it seems like the oxide layer
might could be an issue.
Bill
On Mon, Mar 30, 2020 at 5:07 PM Elliot Robert <elliotr@xxxxxxxxx> wrote:
" Cut out thin aluminum sheets, stack on top of each other, "
I've read other people advocating this method in the 90's. Has anyone
actually built a working engine with this method?
On Mon, Mar 30, 2020 at 5:04 PM Anthony Cesaroni <anthony@xxxxxxxxxxx>
wrote:
General Motors used that technique using paper and glue to prototype
engine blocks back in the 80s. Slicing, the basis of most of it today.
Anthony J. Cesaroni
President/CEO
Cesaroni Technology/Cesaroni Aerospace
http://www.cesaronitech.com/
(941) 360-3100 x101 Sarasota
(905) 887-2370 x222 Toronto
*From:* arocket-bounce@xxxxxxxxxxxxx <arocket-bounce@xxxxxxxxxxxxx> *On
Behalf Of *Rick Wills
*Sent:* Monday, March 30, 2020 6:51 PM
*To:* arocket@xxxxxxxxxxxxx
*Subject:* [AR] Re: Hyperganic uses AI to design a 3D-printed rocket
engine
You can build engines with that thing. Cut out thin aluminum sheets,
stack on top of each other, heat to about 800 to 1000 deg F in a oven.
The
sheets sinter and become a 3D part. Before making parts, be sure do some
trial runs to determine the best temperatures.
Can make a wide variety of 3D shapes using this technique.
Rick Wills
*From:* arocket-bounce@xxxxxxxxxxxxx <arocket-bounce@xxxxxxxxxxxxx> *On
Behalf Of *roxanna Mason
*Sent:* Monday, 30 March, 2020 5:53 PM
*To:* arocket@xxxxxxxxxxxxx
*Subject:* [AR] Re: Hyperganic uses AI to design a 3D-printed rocket
engine
It's completely adjustable from 1 watt to full power. just like your
car can idle or kick into passing lane. Usually the problem is too little
power.
No where will a new 1KM single mode single phase fiber laser be found
for under $20.
On Mon, Mar 30, 2020 at 12:43 PM Joe Bowen <joe.b.bowen@xxxxxxxxx>
wrote:
Yea, I was sort of kidding. A 1KW fiber laser would be way to much
for my current setup, but it's fun to dream sometimes. But I'm pretty
sure
I'd end up with a hole in my basement and a stupid electricity bill if I
tried something like that.
Joe
On Mon, Mar 30, 2020 at 1:33 PM roxanna Mason <
rocketmaster.ken@xxxxxxxxx> wrote:
Yes Joe but it's a bit more than a 40W CO2 but certainly less than
an equivalent CO2 or YAG, I got a good deal and still under warrenty.
On Mon, Mar 30, 2020 at 12:30 PM Joe Bowen <joe.b.bowen@xxxxxxxxx>
wrote:
"I have a brand new 1KW fiber laser available, anyone?"
are you offering? that would be a nice upgrade from my current 40W
co2 cutter/engraver.
Joe
On Mon, Mar 30, 2020 at 1:28 PM ken mason <laserpro1234@xxxxxxxxx>
wrote:
The concept is awesome, the design, funky, why the thick walls and
'excessive' passages? Looks heavy even if aluminum, CRS even worse.
But when I saw 3D printing tech 10 years ago I wondered how long it
would be before the first bi-prop. Rocket Lab has certainly kicked ass!
I have a brand new 1KW fiber laser available, anyone?
On Mon, Mar 30, 2020 at 6:19 AM Joe Bowen <joe.b.bowen@xxxxxxxxx>
wrote:
https://www.dezeen.com/2020/03/30/hyperganic-ai-rocket-engine-3d-printed/