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I'm just wondering where this table came from, is there some equation or formula behind it, or did it just come from a bunch of test data? 24.137.113.90 18:55, 13 July 2007 (UTC)
Near the bottom of the page, for the H2O2/N2H4 combo, in a vacuum, it lists the exhast velocity as 3700 m/s. I'm not an expert, but this seems very unlikely, given that LOX/kerosene is 3500, and in general LOX and kerosene are supposed to be better performing than H2O2/N2H4. Could someone who knows what they're doing run those calculations again?
"Units have been converted to metric. "
All those units need to be specified, in all the tables. What's "pressure" in earlier table, for example. Gene Nygaard 17:08, 22 Dec 2004 (UTC)
Hmmm. "Pressure" is psia, which I'm sure you figured out from context. But this does bring up the point that psia is hardly metric. And 1000 psia is 6.894 MPa, which is hardly a nice round number. Iain McClatchie 19:38, 23 Dec 2004 (UTC)
Wolfkeeper,
You obviously know the subject, we're arguing over the meaning of words.
"believed" versus "noted".
"whilst being very energy dense and lightweight"
"where a hydrogen stage's low fuel mass"
"in practice"
I'm leaving your edits up for now so we can talk about this and resolve it. But I don't agree with all of them.
Iain McClatchie 22:23, 16 August 2005 (UTC)
It would be nice to see some of these reations written as chemical equations. -- 87.112.86.164 17:59, 19 August 2006 (UTC)
Some early liquid rockets were powered by ethanol. E.g. V-2. What propellants did Goddard use? Did he manage cryogenic oxygen? Sdsds 22:04, 1 April 2007 (UTC)
This is an excellent article. I like the conciseness and choice of references (e.g. Huzel and Huang as opposed to the overused Sutton). I am a bit perplexed by one of the opening comments:"This type of propellant has a long history going back to the first rockets..." Given that for 600 years all chemical rockets used solid propellants, that comment seems peculiar, or rather conspicuously false. Or am I missing something? Magneticlifeform ( talk) 15:26, 2 November 2010 (UTC)
The article does not, and should, mention the Russian fuel Heptyl. It should say exactly what the molecular structure of this Heptyl is, and state its relevant physical properties. A Google search of this site has found nothing helpful. 94.30.84.71 ( talk) 13:06, 5 September 2011 (UTC)
The number of liquid propellants in current/recent/historic use is not all that large, and the number of interesting properties is small (name; maybe melting point, boiling point, flash point, vapour pressure at 300K, density, toxicity, link to oxidant, link to more info) and could fit in a row of a Table. 94.30.84.71 ( talk) 13:06, 5 September 2011 (UTC)
There is a strange omission in the propellant table of RP-1/H2O2. I say this is strange, because that combination was used an actual orbital launch vehicle (The UK Black Arrow rocket), whereas as far as I know all the other combinations with H2O2 haven't found practical applications yet. — Preceding unsigned comment added by GrampaScience ( talk • contribs) 17:50, 14 November 2013 (UTC)
I recommend this page be merged with the page Liquid-propellant rocket. 161.31.231.168 ( talk) 03:55, 2 October 2014 (UTC)
(these have bond strain and other interesting features) — Preceding unsigned comment added by 50.89.71.42 ( talk) 08:13, 17 January 2015 (UTC)
I commented the last row in Liquid_rocket_propellant#Bipropellants as hydrazine doesn't seem to be a useful rocket fuel oxidizer. Please cite your source. Darsie42 ( talk) 07:44, 19 February 2017 (UTC)
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I'm just wondering where this table came from, is there some equation or formula behind it, or did it just come from a bunch of test data? 24.137.113.90 18:55, 13 July 2007 (UTC)
Near the bottom of the page, for the H2O2/N2H4 combo, in a vacuum, it lists the exhast velocity as 3700 m/s. I'm not an expert, but this seems very unlikely, given that LOX/kerosene is 3500, and in general LOX and kerosene are supposed to be better performing than H2O2/N2H4. Could someone who knows what they're doing run those calculations again?
"Units have been converted to metric. "
All those units need to be specified, in all the tables. What's "pressure" in earlier table, for example. Gene Nygaard 17:08, 22 Dec 2004 (UTC)
Hmmm. "Pressure" is psia, which I'm sure you figured out from context. But this does bring up the point that psia is hardly metric. And 1000 psia is 6.894 MPa, which is hardly a nice round number. Iain McClatchie 19:38, 23 Dec 2004 (UTC)
Wolfkeeper,
You obviously know the subject, we're arguing over the meaning of words.
"believed" versus "noted".
"whilst being very energy dense and lightweight"
"where a hydrogen stage's low fuel mass"
"in practice"
I'm leaving your edits up for now so we can talk about this and resolve it. But I don't agree with all of them.
Iain McClatchie 22:23, 16 August 2005 (UTC)
It would be nice to see some of these reations written as chemical equations. -- 87.112.86.164 17:59, 19 August 2006 (UTC)
Some early liquid rockets were powered by ethanol. E.g. V-2. What propellants did Goddard use? Did he manage cryogenic oxygen? Sdsds 22:04, 1 April 2007 (UTC)
This is an excellent article. I like the conciseness and choice of references (e.g. Huzel and Huang as opposed to the overused Sutton). I am a bit perplexed by one of the opening comments:"This type of propellant has a long history going back to the first rockets..." Given that for 600 years all chemical rockets used solid propellants, that comment seems peculiar, or rather conspicuously false. Or am I missing something? Magneticlifeform ( talk) 15:26, 2 November 2010 (UTC)
The article does not, and should, mention the Russian fuel Heptyl. It should say exactly what the molecular structure of this Heptyl is, and state its relevant physical properties. A Google search of this site has found nothing helpful. 94.30.84.71 ( talk) 13:06, 5 September 2011 (UTC)
The number of liquid propellants in current/recent/historic use is not all that large, and the number of interesting properties is small (name; maybe melting point, boiling point, flash point, vapour pressure at 300K, density, toxicity, link to oxidant, link to more info) and could fit in a row of a Table. 94.30.84.71 ( talk) 13:06, 5 September 2011 (UTC)
There is a strange omission in the propellant table of RP-1/H2O2. I say this is strange, because that combination was used an actual orbital launch vehicle (The UK Black Arrow rocket), whereas as far as I know all the other combinations with H2O2 haven't found practical applications yet. — Preceding unsigned comment added by GrampaScience ( talk • contribs) 17:50, 14 November 2013 (UTC)
I recommend this page be merged with the page Liquid-propellant rocket. 161.31.231.168 ( talk) 03:55, 2 October 2014 (UTC)
(these have bond strain and other interesting features) — Preceding unsigned comment added by 50.89.71.42 ( talk) 08:13, 17 January 2015 (UTC)
I commented the last row in Liquid_rocket_propellant#Bipropellants as hydrazine doesn't seem to be a useful rocket fuel oxidizer. Please cite your source. Darsie42 ( talk) 07:44, 19 February 2017 (UTC)
Hello fellow Wikipedians,
I have just modified one external link on Liquid rocket propellant. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
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After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than
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Cheers.— InternetArchiveBot ( Report bug) 11:23, 8 November 2017 (UTC)
asdfghjklm 154.115.246.120 ( talk) 16:55, 12 May 2021 (UTC)