Thanks for sharing! Looks like a rod and tube grain design making for fairly
constant thrust curve. Multiple igniters for restarts. Wonder if the
propellant was a special recipe that had a high extinction pressure? I have
thought of several ways to accomplish what they are doing here including a
nozzle plug but could not get around a loose plug obstructing the nozzle.
Didn't occur to me that the plug could be smaller than the throat. I had also
thought about a nozzle that contracted like the iris of an eye but couldn't
think of a way to implement it. Looks like maybe they operate the plug by
hydraulic pressure within the plug. Guess that makes for some high temperature
fluid. Any comments!Sent from my Sprint Tablet.
-------- Original message --------From: Anthony Cesaroni <anthony@xxxxxxxxxxx>
Date: 3/26/20 12:44 (GMT-05:00) To: arocket@xxxxxxxxxxxxx Subject: [AR] Re:
Valley Tech throttleable restartable solids (!) Radial aerospikes are
incredibly sensitive to the outer ramp and back cut geometry. Anthony J.
CesaroniPresident/CEOCesaroni Technology/Cesaroni
Aerospacehttp://www.cesaronitech.com/(941) 360-3100 x101 Sarasota(905) 887-2370
x222 Toronto From: arocket-bounce@xxxxxxxxxxxxx <arocket-bounce@xxxxxxxxxxxxx>
On Behalf Of Joe BowenSent: Thursday, March 26, 2020 12:26 PMTo:
arocket@freelists.orgSubject: [AR] Re: Valley Tech throttleable restartable
solids (!) That looks like that might work well as an aerospike nozzle, given
that you already have a center plug which seems to be one of the larger
challenges for radial aerospike nozzles. Joe On Thu, Mar 26, 2020 at 10:22 AM
Anthony Cesaroni <anthony@xxxxxxxxxxx> wrote: Anthony J.
CesaroniPresident/CEOCesaroni Technology/Cesaroni
Aerospacehttp://www.cesaronitech.com/(941) 360-3100 x101 Sarasota(905) 887-2370
x222 Toronto From: arocket-bounce@xxxxxxxxxxxxx <arocket-bounce@xxxxxxxxxxxxx>
On Behalf Of D KSent: Wednesday, March 25, 2020 9:53 PMTo:
arocket@freelists.orgSubject: [AR] Re: Valley Tech throttleable restartable
solids (!) Cool. Thanks. Doug Knight On Wed, Mar 25, 2020, 9:18 PM Anthony
Cesaroni <anthony@xxxxxxxxxxx> wrote:I can’t comment on it but there was a lot
of work done on this in the early 60’s I have an interesting press release from
Aerojet that illustrates a nice approach to the principle. I will post it here
when I get back to KSRQ tomorrow. Best. Anthony J.
CesaroniPresident/CEOCesaroni Technology/Cesaroni
Aerospacehttp://www.cesaronitech.com/(941) 360-3100 x101 Sarasota(905) 887-2370
x222 Toronto From: arocket-bounce@xxxxxxxxxxxxx <arocket-bounce@xxxxxxxxxxxxx>
On Behalf Of D KSent: Wednesday, March 25, 2020 9:10 PMTo:
arocket@freelists.orgSubject: [AR] Re: Valley Tech throttleable restartable
solids (!) Looks like Aerotech Hardware and Nozzle from a different video they
have. No disrespect, Anthony. Outside looking in. Doug Knight On Wed, Mar 25,
2020 at 9:00 PM Anthony Cesaroni <anthony@xxxxxxxxxxx> wrote:A customer.
Anthony J. CesaroniPresident/CEOCesaroni Technology/Cesaroni
Aerospacehttp://www.cesaronitech.com/(941) 360-3100 x101 Sarasota(905) 887-2370
x222 Toronto From: arocket-bounce@xxxxxxxxxxxxx <arocket-bounce@xxxxxxxxxxxxx>
On Behalf Of George HerbertSent: Wednesday, March 25, 2020 8:17 PMTo:
arocket@freelists.orgSubject: [AR] Valley Tech throttleable restartable solids
(!) No more info than watching their presentation but... interesting...
https://twitter.com/mil_std/status/1242911601965047809?s=21Sent from my iPhone