It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Thank you.
Some features of ATS will be disabled while you continue to use an ad-blocker.
originally posted by: BASSPLYR
People need to get away from the RK story and look harder at what was presented if they want to make sense of all of that mess. Take a analogy and then research its real world equivalents. Things might begin to click.
originally posted by: yuppa
A O was not banned from ATS so th e person you are talking about is lying. He left of his own accord.
originally posted by: Phage
a reply to: lovebeck
You're right. The space shuttle didn't use fossil fuels either.
The propellant mixture in each SRB motor consists of ammonium perchlorate (oxidizer, 69.6% by weight), aluminium (fuel, 16%), iron oxide (a catalyst, 0.4%), a polymer (such as PBAN or HTPB, serving as a binder that holds the mixture together and acting as secondary fuel, 12.04%), and an epoxy curing agent (1.96%). This propellant is commonly referred to as Ammonium Perchlorate Composite Propellant, or simply APCP. This mixture develops a specific impulse of 242 seconds (2.37 km/s) at sea level or 268 seconds (2.63 km/s) in a vacuum.
The main fuel, aluminum, is used because it has a reasonable specific energy density of about 31.0MJ/kg, but a high volumetric energy density, and is difficult to ignite accidentally.
The propellant has an 11-point star-shaped perforation in the forward motor segment and a double-truncated-cone perforation in each of the aft segments and aft closure. This configuration provides high thrust at ignition and then reduces the thrust by approximately a third 50 seconds after lift-off to avoid overstressing the vehicle during maximum dynamic pressure (Max Q).
Polybutadiene acrylonitrile (PBAN) copolymer, also noted as polybutadiene — acrylic acid — acrylonitrile terpolymer.
This was the binder formulation widely used on the 1960-70's big boosters (e.g., Titan III and Space Shuttle SRBs). It is also sometimes used by amateurs due to simplicity, very low cost, and lower toxicity than the more common hydroxyl-terminated polybutadiene (HTPB). HTPB uses isocyanates for curing, which have a relatively quick curing time; however, they are also generally toxic. PBAN based propellants also have a slightly higher performance than HTPB based propellants.
PBAN is normally cured with the addition of an epoxy resin, taking several days at elevated temperatures to cure.
PBAN will be used in future NASA missions, most notably the Constellation program, cancellation pending in Congress, as this copolymer was to be used in the first stage of the Ares I rocket in five segments.
Polybutadiene is a synthetic rubber that is a polymer formed from the polymerization process of the monomer 1,3-butadiene.
This hydrocarbon was identified as butadiene in 1886, after Henry Edward Armstrong isolated it from among the pyrolysis products of petroleum.In 1910, the Russian chemist Sergei Lebedev polymerized butadiene, and obtained a material with rubber-like properties.
Butadiene can also be produced by the catalytic dehydrogenation of normal butane (n-butane). The first such post-war commercial plant, producing 65,000 tons per year of butadiene, began operations in 1957 in Houston, Texas.[6] Prior to that, in the 1940s the U. S. War Department constructed several plants in Borger, TX, Toledo, OH, and El Segundo, CA to produce synthetic rubber for the war effort as part of the United States Synthetic Rubber Program. Total capacity was 68 KMTA (Kilo Metric Tons per Annum).
Today, butadiene from n-butane is commercially practiced using the Houdry catadiene process, which was developed during WWII.
s butane a liquid fossil fuel?
Butane is a hydrocarbon compound found in natural gas and crude oil. Both natural gas and crude oil are fossil fuels. At sufficient pressure and low temperature, it can be a liquid.
So in answer to your question, butane is compound that comes from a fossil fuel, and can be both a liquid and a gas depending on the pressure and temperature.
Natural gas is mostly methane and ethane, with small amounts of butane and propane, so it is usually stored as a gas phase. Crude oil has many hydrocarbon compounds heavier than butane, so it remains a liquid.
I was talking about the main engines, of course.
So, I think you have some explaining to do!
originally posted by: The GUT
originally posted by: yuppa
A O was not banned from ATS so th e person you are talking about is lying. He left of his own accord.
Exactly my point. If it is A0 at LO, then he's an obvious liar.
Yuppa: Are you still in contact with the cosmic dream guru? If so, I'd be careful about following his "suggestions" but that's just me. I've always appreciated you as a member here, so I'm willing to be open to your story but I'd like to hear it from you. If not here, maybe a pm?
originally posted by: yuppa
Zaphod and me and others do not believe he would be elsewhere contradicting everything he has said here. The give away to me its not him is the I was banned at ATS line. He left on good terms. Now there are a few members who disliked him who I would not put this crap past though. SOMEONE IS USING HIS NAME TO DISCREDIT STUFF AND OR MAKE THEMSELVES LOOK GOOD FOR "DISCOVERING" THIS INFORMATION. Suspicious timing all the sudden woundt you all agree?
originally posted by: Zaphod58
a reply to: The GUT
Uhm, no, I am not thanks, and I've never said I was a believer in more than the conventional stuff that was passed around, so please don't either assume that I am, or put words in my mouth thank you.
Zaphod and me and others do not believe he would be elsewhere contradicting everything he has said here.