One of my sons did his grade 8 science fair project on this exact topic. He
compared various gasses for cold gas thruster applications and the trades
involved. He won.
The legal debacle the project caused as soon as the rocket word was used
resulted in half the school board, a team of lawyers and pile of documents
an inch thick I had to sign on his behalf. Plus, I had to be present
whenever such dangerous equipment and activities were on school property.
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 [mailto:arocket-bounce@xxxxxxxxxxxxx] On
Behalf Of Henry Spencer
Sent: Monday, March 13, 2017 2:06 PM
To: Arocket List <arocket@xxxxxxxxxxxxx>
Subject: [AR] Re: WProPep question
On Mon, 13 Mar 2017, Henry Vanderbilt wrote:
One caution - I'm pretty sure from context that 296 seconds
theoretical max for cold-gas hydrogen I saw quoted is a vacuum figure.
(No mention of how much expansion though.)