NSHP. When I worked with Korey Kline and Kevin Smith on the DARPA uLV, the
plan going in was to ditch the decimal place splitting with the minimum net
suction head pressure approach. The wall didn't come up as much as one might
expect at the diameters involved and the dynamics of the turbo-pump became
so much easier to manage. NSHP was allowed to rise to 100 psi from 37 psi
with LOX. Speed dropped from 23K to 14K IIRC and pumps were so simple. They
were driven with engine heated GOX at 200F and lubricated with LOX. The
tanks weren't that much heavier in the scheme of things. Chuck Rogers did
all the simulation work and the vehicle met performance targets.
We moved on to FALCON Kestral and switched to integrated, head end injector
pumps but stuck with 100 psi. All this resulted with the winner sliding a
pipe of propane out the back of a C-17 off a lot of car tires.
Do you know what the NSHP is on the current variant?
Anthony J. Cesaroni
President/CEO
Cesaroni Technology/Cesaroni Aerospace
http://www.cesaronitech.com/
(941) 360-3100 x101 Sarasota
(905) 887-2370 x222 Toronto
-----Original Message-----
From: arocket-bounce@xxxxxxxxxxxxx <arocket-bounce@xxxxxxxxxxxxx> On Behalf
Of Henry Spencer
Sent: Monday, July 1, 2019 8:43 PM
To: Arocket List <arocket@xxxxxxxxxxxxx>
Subject: [AR] Centaur (was Re: Re: Human Rated Hydrogen Tanks...)
On Fri, 28 Jun 2019, Anthony Cesaroni wrote:
Frank once said that he'd really like to get back to the original
Centaur tank sidewall thickness instead of the heavier modern one...
What was the justification for increasing the wall thickness again?
IIRC, the wall thickness was reduced during the development of the
original vehicle design. It was thicker in the very first flight
vehicle(s) from what I understand.
