The reference site for the PDE information contains a table of fuels and ISP's. None were greater than 180 for acetylene and oxygen mixtures.
Art Pennington, Richland, WA -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of [EMAIL PROTECTED] Sent: Tuesday, December 23, 2003 12:00 PM To: [EMAIL PROTECTED] Subject: ERPS-list Digest, Vol 4 #14 Send ERPS-list mailing list submissions to [EMAIL PROTECTED] To subscribe or unsubscribe via the World Wide Web, visit http://lists.erps.org/mailman/listinfo/erps-list or, via email, send a message with subject or body 'help' to [EMAIL PROTECTED] You can reach the person managing the list at [EMAIL PROTECTED] When replying, please edit your Subject line so it is more specific than "Re: Contents of ERPS-list digest..." Today's Topics: 1. Anything happnin with PDE's? ([EMAIL PROTECTED]) 2. Re: Anything happnin with PDE's? ([EMAIL PROTECTED]) 3. Re: Anything happnin with PDE's? (Adrian Tymes) ---------------------------------------------------------------------- Message: 1 Date: Mon, 22 Dec 2003 18:33:35 EST From: [EMAIL PROTECTED] Subject: [ERPS] Anything happnin with PDE's? To: [EMAIL PROTECTED] Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset="US-ASCII" I'm new to the list and wonder what's the state of development of PDE's. [I don't suppose any ERP members are working on them?] http://www.galcit.caltech.edu/EDL/projects/pde/pde.html has the most information that I have been able to find for detonation motors. [Is there a better one?] I'm enjoying Armadillo's peroxide diary but just wish that civilian rocket science were at the point where entrepreneurs were working at the next level, explosion power rather than just burner power. I fear that the breakthrough inventions regarding PDE's have gone into a classified patents safe so they cannot be applied by the public. I mean, they've been studied for fifty years, mostly by the military, Ill bet. Why no test flight yet? Allen Meece, Key West FL ------------------------------ Message: 2 Date: Mon, 22 Dec 2003 22:11:50 EST From: [EMAIL PROTECTED] Subject: Re: [ERPS] Anything happnin with PDE's? To: [EMAIL PROTECTED] Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset="US-ASCII" Allen, I'm afraid the PDE's are outside the scope of ERPS' activities and would probably be considered 'off topic'. Arocket may be a better forum. Dan In a message dated 12/22/03 4:34:13 PM, [EMAIL PROTECTED] writes: > I'm new to the list and wonder what's the state of development of PDE's. > >[I don't suppose any ERP members are working on them?] > http://www.galcit.caltech.edu/EDL/projects/pde/pde.html has the most > >information that I have been able to find for detonation motors. [Is there >a >better one?] > I'm enjoying Armadillo's peroxide diary but just wish that civilian >rocket >science were at the point where entrepreneurs were working at the next >level, >explosion power rather than just burner power. > I fear that the breakthrough inventions regarding PDE's have gone into >a >classified patents safe so they cannot be applied by the public. I mean, > >they've been studied for fifty years, mostly by the military, Ill bet. >Why no test >flight yet? > Allen Meece, Key West FL > > > >_______________________________________________ >ERPS-list mailing list >[EMAIL PROTECTED] >http://lists.erps.org/mailman/listinfo/erps-list > > >----------------------- Headers -------------------------------- >Return-Path: <[EMAIL PROTECTED]> >Received: from rly-yd03.mx.aol.com (rly-yd03.mail.aol.com [172.18.141.67]) >by air-yd03.mail.aol.com (v97.14) with ESMTP id MAILINYD32-1ff3fe77f61228; >Mon, 22 Dec 2003 18:34:12 -0500 >Received: from cube.erps.org (berate.terraluna.org [64.71.149.252]) by >rly-yd03.mx.aol.com (v97.10) with ESMTP id MAILRELAYINYD31-1ff3fe77f61228; >Mon, 22 Dec 2003 18:33:54 -0500 >Received: from cube.erps.org (localhost [127.0.0.1]) > by cube.erps.org (Postfix) with ESMTP > id 80AAB480094; Mon, 22 Dec 2003 15:33:50 -0800 (PST) >Delivered-To: [EMAIL PROTECTED] >Received: from imo-r07.mx.aol.com (imo-r07.mx.aol.com [152.163.225.103]) > by cube.erps.org (Postfix) with ESMTP id 6551B480002 > for <[EMAIL PROTECTED]>; Mon, 22 Dec 2003 15:33:47 -0800 (PST) >Received: from [EMAIL PROTECTED] > by imo-r07.mx.aol.com (mail_out_v36_r4.8.) id 3.1a3.1e8ba006 (3948) > for <[EMAIL PROTECTED]>; Mon, 22 Dec 2003 18:33:35 -0500 (EST) >From: [EMAIL PROTECTED] >Message-ID: <[EMAIL PROTECTED]> >Date: Mon, 22 Dec 2003 18:33:35 EST >To: [EMAIL PROTECTED] >MIME-Version: 1.0 >X-Mailer: 6.0 sub 10577 >Content-Type: text/plain; charset="US-ASCII" >Content-Transfer-Encoding: 7bit >X-Content-Filtered-By: Mailman/MimeDel 2.1.2 >Subject: [ERPS] Anything happnin with PDE's? >X-BeenThere: [EMAIL PROTECTED] >X-Mailman-Version: 2.1.2 >Precedence: list >List-Id: ERPS discussion list <erps-list.lists.erps.org> >List-Unsubscribe: <http://lists.erps.org/mailman/listinfo/erps-list>, > <mailto:[EMAIL PROTECTED]> >List-Archive: </archives/erps-list> >List-Post: <mailto:[EMAIL PROTECTED]> >List-Help: <mailto:[EMAIL PROTECTED]> >List-Subscribe: <http://lists.erps.org/mailman/listinfo/erps-list>, > <mailto:[EMAIL PROTECTED]> >Sender: [EMAIL PROTECTED] >Errors-To: [EMAIL PROTECTED] >X-AOL-IP: 64.71.149.252 >X-AOL-SCOLL-SCORE: 0:XXX:XX >X-AOL-SCOLL-URL_COUNT: 0 > > ------------------------------ Message: 3 Date: Tue, 23 Dec 2003 09:35:10 -0800 (PST) From: Adrian Tymes <[EMAIL PROTECTED]> Subject: Re: [ERPS] Anything happnin with PDE's? To: [EMAIL PROTECTED] Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; charset=us-ascii --- [EMAIL PROTECTED] wrote: > I'm new to the list and wonder what's the state > of development of PDE's. > [I don't suppose any ERP members are working on > them?] I recall a group at UCLA that was working with these. They ran into a number of problems which would make PDEs less than optimal for ERPS, including difficulty of control of a non-continual stream of thrust (though the group at the link you gave seems to have overcome this), and a lower ISP than liquid fuels (which I saw no mention of at that link). In general, lower ISP means a less desirable rocket fuel, so if PDEs in general (rather than just the ones that group explored) turn out to have a lower ISP, that would explain why you see so few people working on this. (I.e., explosion power would be more like the previous level than the next - again, as measured by the ISP.) ------------------------------ _______________________________________________ ERPS-list mailing list [EMAIL PROTECTED] http://lists.erps.org/mailman/listinfo/erps-list End of ERPS-list Digest, Vol 4 #14 ********************************** _______________________________________________ ERPS-list mailing list [EMAIL PROTECTED] http://lists.erps.org/mailman/listinfo/erps-list
