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11:01
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Hack a Day
[Graham] over at FUBAR labs took it upon himself to build a rocket engine. This isn’t a simple solid-fuel motor, though: [Graham] went all out and built a liquid-fueled engine that is ignited with a spark plug. The build started off with a very small ‘igniter’ engine meant to shoot sparks into a larger engine. [...]
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5:00
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Hack a Day
In case you haven’t heard, NASA is building a new rocket – a replacement for the shuttle – that will eventually take crews again outside low Earth orbit. It’s called the Space Launch System and looks surprisingly similar to the Saturn V that took men to the moon. Manufacturing technology is light years ahead of what it [...]
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16:01
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Hack a Day
We feel like the days when you want to play in the water are far behind us. But if you can still find a warm afternoon here or there this water rocket launcher build is a fun undertaking. We figure most of the time spent on the project will be in shopping for the parts. [...]
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15:01
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Hack a Day
Most any rocket engine you’d find on a spacecraft – save for solid or hybrid rockets – use an engine system that’s fairly complex. Because of the intense heat, the fuel is circulated around the chamber before ignition giving a motor its regeneratively cooled nomenclature. This arrangement leads to a few complicated welding and machining processes, [...]
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11:01
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Hack a Day
We are fascinated by the hybrid rocket engine which [Ben Krasnow] built and tested in his shop. It is actually using a hollow cylinder of acrylic as the fuel, with gaseous oxygen as an oxidizer. We’re already quite familiar with solid rocket propellant, but this hybrid approach is much different. When a rocket motor using solid propellant [...]
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11:14
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Packet Storm Security Exploits
Sites created by Rocket Web Consulting suffer from a remote SQL injection vulnerability. Note that this finding houses site-specific data.
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15:02
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Hack a Day
It turns out that old newsprint can be a bit explosive; at least when it’s combined with the proper ingredients. [Markus Bindhammer] worked out a way to make solid rocket propellant from newspaper. Judging from the test footage after the break the home made engines work great! There isn’t a long list of ingredients. In [...]
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8:01
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Hack a Day
A team of rocketry enthusiasts at Boston University have been working on a small hybrid rocket motor that serves as a test bed for a larger, yet-to-be-designed power plant that will hopefully launch a rocket into space. The static tests of the BURT Mk. II began last April with a series of tests using HTPB solid fuel and Nitrous Oxide [...]
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10:01
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Hack a Day
LVL1 has a new rocketeering group. This rocket engine testing platform is the first project to come out of the fledgling club. The purpose of the tool is to gather empirical data from model rocket engines. Having reliable numbers on thrust over time will allow the team to get their designs right before the physical build even [...]
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4:00
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Hack a Day
When we posted our call for rocketry hacks and builds, we expected to see a few altitude sensors and maybe a GPS module or two. Apparently, we forgot similar hardware is very popular in the remote-controlled aircraft world, and can be successfully added to a rocket as [Kevin] and his ArduPilot equipped J motor rocket [...]
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11:04
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Hack a Day
Last month, the Cambridge University Spaceflight society launched two stages of their Martlet 1 three-stage rocket. After seeing our call for rocket builds, they sent in a launch report. We’re glad they did; it’s an amazing piece of work that screams into the atmosphere faster than the speed of sound. The society is designed the [...]
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7:05
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Hack a Day
If you’re building model rockets you want to make sure they fly straight, and most of that is dependent on the stabilizer fins. It has long been a problem come assembly time. How can you make sure that they’re being aligned without any variation? [Rrix] mentioned that one technique is to use a square to [...]
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4:01
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Hack a Day
There’s nothing like the smell of black powder in the morning, along with the excitement and burnt propellant in the air that comes after launching a model rocket. All those 60s, 70s, 80s and 90s kids out there may remember the classes of model rocket engines – generally A, B, C, and D sized engines used to [...]
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6:00
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Hack a Day
Last April, we caught wind of a very impressive rocket engine being built by Copenhagen Suborbitals. That engine was on the test pad this weekend, and the video is incredible (skip to 20:30 for the actual test). The Copenhagen Suborbitals team pulled off a successful test firing of their 65 kilo Newton alcohol and liquid Oxygen-fueled [...]
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15:47
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SecDocs
Tags:
science Event:
Chaos Communication Camp 2011 Abstract: The "Arguna" rocket family consist of four one-stage sounding rockets that can reach altitudes up to 10km. We will present the designs of these rockets and discuss the performed flights and results from avionics experiments.
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21:32
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SecDocs
Tags:
science space Event:
Chaos Communication Camp 2011 Abstract: Design and implementation of rocket engines with two-phase propellants
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14:53
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SecDocs
Tags:
science Event:
Chaos Communication Camp 2011 Abstract: We will discuss the basic principles of thermochemical engines and their application for rocket propulsion. The three main types of chemical rocket engines, i.e. solid, liquid, and hybrid, will be presented and compared. The main subsystem of every space flight system is the propulsion system also called the rocket engine. The present paradigm is the thermochemical engine that produces thrust by expanding hot gas produced by an exothermic reaction through a nozzle. Present rocket engine designs can be categorized in three classes dependent on the state of the propellant(s), i.e. solid, liquid or hybrid. We will sketch the underlying physical processes present in all engine designs necessary to get a basic understanding of the different approaches and compare their specific advantages and drawbacks.
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8:01
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Hack a Day
While we’re reluctant to say it for fear of being misinterpreted, the new liquid fuel rocket engine being built by Copenhagen Suborbitals is one of the most impressive, daring, and nearly the sexiest machine we’ve ever seen. Although the engine hasn’t been fired yet, [Peter Madsen], Chief launch vehicle designer at Copenhagen Suborbitals, gives an amazing 18-minute-long rundown of [...]
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14:01
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Hack a Day
[Adric Menning] has an unfortunate allergy. He’s allergic to chocolate. Instead of eating the stuff, he’s using it to build model rocket engines. The project stems from the Quelab Hackerspace’s chocolate hacking challenge which spawned a number of interesting hacks. [Adric's] doesn’t use pure chocolate (an experiment with a Hershey’s bar was a bust) but [...]
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7:01
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Hack a Day
Those little Estes rockets you built as a kid just got blown out of the water. In response to the Carmack Prize to launch an amateur rocket above 100,000 feet, [Derek Deville] and the rest of the Qu8k team launched a 320 pound, 14-foot-long rocket through 99% of the Earth’s atmosphere. Unlike our little toy [...]
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6:00
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Hack a Day
When the idea of an engine hacks theme was being kicked around at Hack a Day, the subject of rocket engines was one of the first to come up. There was a problem though; solid rocket motors are far too common to be interesting, and even hybrid rocket engines are becoming passé. We’ve never seen [...]
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4:02
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Hack a Day
When someone writes in and says, “Hey, I strapped a camera to a rocket and took videos of it launching!” it’s really hard for us to not get suckered in. Try as we might, we just couldn’t resist taking a look at the videos [Vlad] recorded of his model rocketry “exploration”. Inspired by our 4th [...]
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13:31
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Hack a Day
It’s a holiday weekend, and much like you, we’re taking a bit of time to relax and kick back a few drinks while we mingle with friends and family. Obviously, one of the bigger events this weekend plays host to is the fireworks show put on by your city or your drunken neighbors. Roman candle [...]
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4:06
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Hack a Day
We love ballistic trajectories and the smell of black powder in the morning, so we’re really interested in the wireless rocket launch pad sent in by [Brent Strysko]. [Brent] used an ATmega with an enc28j60 ethernet shield and wireless router to launch the rocket without a physical connection with ‘the button.’ Everything on the launchpad [...]
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13:00
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Hack a Day
If you thought you had a cool tree house as a kid, think again. Tasked with landscaping his back yard and building a tree house for his son, [Jon] decided to go all out and build him a rocket ship instead. Rising 15 feet into the Seattle skyline, the tree house known as the Ravenna [...]
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14:00
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Hack a Day
Launching model rockets is a good time, but more often than not, it’s hard to tell how high the rocket went or how fast it moved – both essential facts when bragging about your latest flight. [Chris] recently built a GPS-based altimeter for the USC Rocket Propulsion Lab, so that they could track the performance [...]
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12:03
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Hack a Day
[Ken] sent us his Instructable in which he used radio telemetry to monitor the status of his air-powered model rocket through a series of launches. His setup is centered around an Arduino IDE-compatible board that looks to be about the size of a Boarduino, but has the benefit of an embedded 915 MHz radio module. [...]
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10:59
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Hack a Day
If this is meant for a model rocket it must be the biggest we’ve ever seen. [Scott] and [Trevor] took on the task of building a rocket attitude control system after reading about some research on the topic. But that researcher only tested the theories using simulations so they set out to build their own. [...]
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8:00
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Hack a Day
[cmwslw] built a soda-bottle water rocket that uses the ignition of oxyhydrogen gas to quickly expel the water, as opposed to the usual compressed air and water mixture. His project contains excellent documentation with photos and it builds on other articles he’s written about generating the flammable HHO gas used to launch his craft into [...]
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12:00
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Hack a Day
[Stephan Jones] has an easy method for making your own model rocket engine igniter. The solid state motors used in this hobby consume one igniter with each electrically triggered launch. Whether you’re making your own motors or not, this construction technique should prohibit you from every buying an igniter again. The process involves bending some nichrome [...]
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12:00
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Hack a Day
Sugar rocket We’re told that this rocket is sugar powered. It’s quite a bit bigger than the homemade sugar motors we saw last week and it makes for quite a show. [Thanks Estqwerty] Wooden PC construction The finished look of this wooden PC case seems very familiar to us but we’re not sure we’ve seen [...]
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6:32
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Hack a Day
Hackers [Navic] and [K.o.D] have fitted an Arduino Pro Mini and an array of components into an off the shelf rocketry kit to create a guided model rocket, taking the whole idea of Arduino-based space technology to another level The Arduino reads signals from internally mounted accelerometers, and adjusts balsa fins (via 4 micro servos) [...]
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12:13
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Hack a Day
School will be starting again in a few weeks but it’s not too late to enjoy a little time with your kids. This water rocket launcher lets you do just that. Built using the frame from an old grill, a soda bottle takes its place on the upturned PVC pipe. There’s a connection for your garden hose [...]
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