Talk:Armadillo Aerospace
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[edit]According to their homepage and reports, the abandonment of 90% hydrogen peroxide was very strongly influenced by a near-inability to get sufficient amounts of it. "It sucked that the lack of 90% peroxide prevented us from flying any vehicles for the last eight months"
— Preceding unsigned comment added by 81.173.174.193 (talk • contribs) 14:26, 20 March 2005 (UTC)
John Carmack (identifiable due to his well-known email address) sent the following email to the arocket distribution list when asked whether it was ok to use pictures from www.armadilloaerospace.com
"Just an idea, what were the general specs for these vehicles? If you specify them, we can get them added to the Wikipedia and/or Encyclopedia Astronautica... Have the Pixel and Texel vehicles got a family name? Also, are any of the pictures of Pixel or Texel (or any other images from Armadillo) releaseable under GPL?"
Date: Wed, 08 Nov 2006 20:46:27 -0600 To: arocket@exrocketry.net From: John Carmack <johnc@idsoftware.com> I hate to fill in a form, because there are so many variables in specification, but here are most of the details: Pictures from the Armadillo website can be used. The family is "quads". Pixel and Texel have only very minor differences between them. We have done over 30 tethered test flights, but the 3.1 flights at the cup are the only free flights so far. We have never taken exact dimension measurements, but the spheres are 36" diameter, and everything can be estimated from that. The dry mass is 650 pounds. Official payload for the Lunar Lander Challenge is 55 pounds, obviously we could carry much more if we don't need to fly for 180 seconds. The injector for XPC-06 is, in Armadillo speak, "FOF-twisted-squished-extraFilm-aluminum", the chamber is a 20" long x 8" OD carbon fiber reinforced graphite piece from Cesaroni Aerospace. The throat is 3.25" diameter. The nozzle expansion is only 2:1, optimizing for around 150 psi chamber pressure, avoiding massive overexpansion at the end of the run. For level 1 flights, we load 360 pounds of 90% ethanol (one 55 gallon drum) and around 500 pounds of lox. We still have about 140 pounds of propellant remaining after 100 seconds in the air. For level 2, we load twice as much propellant. The Isp is higher at the higher chamber pressures required for hover with the extra weight, so it should make 180 seconds, but we haven't demonstrated that yet. Initial blowdown tank pressurization is 320 psi for level 1 and 400 psi for level 2. Each spherical tank is about 100 gallons, so the pressure drops by more than half over a fully loaded run just to expel the propellants. The roll thrusters also draw from tank ullage, which causes additional pressure drop during flight. Chamber pressure ranges from about 80 psi during hover when almost depleted, up to about 300 psi when climbing with a full propellant load. Thrust is pretty close to 10 lb / chamber psi. We don't have accurate Isp numbers for the current engine, but it probably varies from about 140 to 200 seconds across the chamber pressure range. Note that the decrease at low pressures is due much more to low pressure drop across the injectors and resulting poorer mixing / atomization than due to nozzle effects. John Carmack _______________________________________________ aRocket@exrocketry.net http://exrocketry.net/mailman/listinfo/arocket
I take this to mean that pictures relating to Pixel and Texel are released under GFDL.
— Preceding unsigned comment added by Wolfkeeper (talk • contribs) 05:48, 9 November 2006 (UTC)
explicit creative commons license for armadillo image/video gallery
[edit]http://www.armadilloaerospace.com/n.x/Armadillo/Home/Gallery/Licensing —Preceding unsigned comment added by WarKosign (talk • contribs) 14:04, 29 November 2007 (UTC)
Armadillo update
[edit]This just appeared on the Armadillo Aerospace website: Rocket Time flies, and so does Armadillo!, 2010-01-27. It is a summary of events at AA over the past year, from the company perspective -- sort of a year's worth of press releases rolled into one. N2e (talk) 11:24, 29 January 2010 (UTC)
Update "Staff and funding"
[edit]Carmack released new staff and funding figures during his talk at QuakeCon 2010 on 12 August 2010. I've marked the section to be updated pending the incorporation of these new figures. --Credema (talk) 00:23, 13 August 2010 (UTC)
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Logo
[edit]it would be nice to find on the archived website a copy of the logo with the armadillo on the rocket and text underneath like seen on
![](http://upload.wikimedia.org/wikipedia/commons/thumb/4/4f/Armadillo_Engine_01.jpg/150px-Armadillo_Engine_01.jpg)
or https://www.zaikei.co.jp/files/general/2013081219583921.jpg or https://mk0techwillsave6k4fj.kinstacdn.com/wp-content/uploads/2019/09/armadillo-logo.png which i am certain they have taken from the armadillo aerospace website and thus should be licensed CC-BY-SA.157.131.250.246 (talk) 20:16, 14 April 2021 (UTC)
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