This is a compilation of video clips recorded during 2006 of a series of hybrid rocket motors designed, built and tested by James Turner, Eric Stackpole, Jeffery Bernard, and Caleb Lesher. The clips range from our very first hybrid rocket motor test to our most resent. All of the materials used where acquired from a local hardware store, and development was purely a result to what we learned along the way (no plans were used). Future development calls for more advanced parts such as ceramic nozzles and composite rocket bodies. More video will be posted as our rockets develop.. + Informações

Jem builds a hybrid rocket powered by toffee and N2O.. + Informações

Adam & Jamie build a rocket out of pluming pipes and bits. Boom! kpal! boom! ********* Boom******** As Adam would say. More smoke then in an Amsterdam Coffee Shop. !!!!!!!!!!!!Enjoy !!!!!!!!!!!!. + Informações

Update on my senior project here at Cal Poly San Luis Obispo. This video is intended primarily for my advisor, but to anyone else who isn't familiar with what I'm doing: This is a demonstration hybrid rocket motor in our propulsions lab, employing oxygen as the oxidizer and plexiglas (polymethylmethacrylate) as the fuel, with propane as the ignitor. The purpose of this motor is DEMONSTRATION of hybrid motor characteristics, NOT thrust performance. As such, the thrust is intentionally low (this is also good for safety). My senior project is to design a rocket nozzle or two that will sufficiently demonstrate to students the higher performance that can be expected from the use of a nozzle, particularly in the form of increased thrust. Cal Poly's motto is "learn by doing." I am doing exactly that. Machining new fixtures and nozzles, testing the nozzles, collecting the data, and doing everything else myself has been a learning experience, allowing me to see the design process from conception to application. If you have any questions about Cal Poly, their aerospace engineering department, or hybrid rocket motors, let me know and I'll be sure to get back to you.. + Informações

This is a combination of 3 test firings of an Aerospike nozzle for my Senior Project in Aerospace Engineering from California Polytechnic State University in San Luis Obispo. The test bed hybrid uses gaseous oxygen, GOX, and a 2" dia Plexiglas tube as the solid fuel. The Oxygen is at 100psi. The first test run was not choked, which was expected for the throat area is ~10 times greater than what the ideal area should be. The ideal gap between the spike and the compression cowl needed to be .003", yes, 3 thousands of an inch. However, if this were too small, this could produce a thermal choke well in front of the actual physical choke, which would reduce the performance of the rocket. I machined the compression cowl to have a gap of .053" instead. This would have allowed me to re-machine it smaller to maximize the thrust of the rocket. I planned to fire the test for only 10 seconds, however I got distracted and allowed it to fire for 20 seconds, 2-3 seconds shy of turning the two piece nozzle into 3 or more pieces, that's what all the sparks are at the end. This nozzle was machined out of 4140 Chrome-Molly. What took over 32 hours of CNC machining only took 20 seconds to destroy. The second set of fires is with the newer nozzle design which reduced the stagnation zones that burnt up the first nozzle. As you can see, this one produced over twice as much thrust than the first nozzle, this one was machined to have a throat gap of .013" which may have over choked this nozzle .... + Informações

At the July 17, 2006 meeting of the Canadian Space Society [1], a hybrid rocket motor using gaseous oxygen and acrylic was demonstrated. The motor was built by Robert Gissing, Daniel Faber, and Luke Stras at the HarderGissing Machine Company ( www.treheima.ca/hardergissing )as part of a CSS space display for the Toronto Aerospace Museum. The usage of an optical grade acrylic rod as both the fuel and the combustion chamber allows for viewing of the combustion process during firing. This is a video of a static test firing that took place during 2006 Field Day activites at Hart House Farm Uses standard welding fittings and a Fuel grain of optical grade acrylic 2.0 inch dia fuel grain 12 inches long. The endcap has an integrated convergent divergent nozzle.. + Informações

SETI Talks archive: seti.org The hybrid rocket concept has been around for more than seventy-five years. The idea is to store the oxidizer as a liquid and the fuel as a solid producing a design that is immune to large-scale chemical explosion. The fuel is contained within the combustion chamber in the form of a cylinder with one or more channels called ports hollowed out along its axis. Combustion takes place between vaporized oxidizer flowing through the ports and fuel evaporating from the solid surface. While the hybrid rocket enjoys many safety and environmental advantages over conventional systems, large hybrid rockets have not been commercially viable. The reason is that traditional systems use polymeric fuels that evaporate too slowly making it difficult to produce the high thrust needed for most applications. To compensate, the surface area for burning must be increased, and as the size of a hybrid rocket increases the number of required ports also increases leading to poor volumetric loading and poor fuel structural characteristics. Recent research at Stanford University has led to the development of a class of paraffin-based fuels that burn at surface regression rates that are several times that of conventional polymeric fuels. These new fuels form a thin, hydro-dynamically unstable liquid layer on the melting surface of the fuel grain. Entrainment of droplets from the liquid-gas interface can substantially increase the rate of fuel mass transfer leading to much .... + Informações

This is a video of the Alpha Hybrids team preparing and eventually launching there rocket to 27000 ft. The rocket ran on a low-thrust 'M' engine (M 900) enabling the rocket to have an 11-second burn-time, a 30 second flight altogether. This missle was launched in Northern Colorado for Northern Colorado Rocketry (NCRocketry.com) during Oktoberfest. The rocket was equipped with an Astro-Garmin GPS, an altimeter, and a back-up homing device. The rocket ended miles from the launch site, thankful they had a nice GPS (something they learned earlier). Alpha Hybrids is a relatively new team building motors that are a lot more reliable in the fact that they won't explode - such as an 'M Hybrid'. Alpha Hybrids is also unique in that it completely builds everything!, from the razor-blade fins, to the fuel, the motor-casing, and to sewing the parachute! The guy whereing the Alpha Hybrids shirt and carrying the rocket to the pad is my math teacher. Who's your math teacher? - NCRocketry (NCRocketry.com) - Alpha Hybrids - A CrewsControl Production ...and another good flight from the LORD!. + Informações

Hybrid rocket engines Design and implementation of rocket engines with two-phase propellants Speaker: EventID: 4447 Event: Chaos Communication Camp 2011 (CCCamp 2011) of the Chaos Computer Club [CCC] Language: english Start: 12.08.2011 13:30:00 +02:00 License: CC-by-nc-sa. + Informações

A hybrid stove that combines the continuous feed concept of the rocket stove with the smaller dimensions of the "Bush Buddy" style woodgas backpacking stove. + Informações

Fuel: O2 + HDPE (high density polyethelyne)... All pre- and post-analysis done in MATLAB (with combustion help from Cantera package). All HDPE grains as well as a graphite converging-diverging nozzle were machined in Stanford's Product Realization Lab (PRL) machine shop. We conducted five test fires (the fifth after this video was made), iterating on grain (and nozzle) design based on our theoretical and experimental analysis. Time frame: 2.5 weeks. Team: Colin Duffie Jack Jorgensen Eric Slesinger Kevin Ting. + Informações

Pressurizing the nitrous tank was an excellent idea. And the new nozzle made from forged 316 stainless steel is simply amazing. A big thanks to all the helping hands!. + Informações

This Hybrid Rocket, using cast acrylic and GOx, has been fired inside NASA HQ, the Senate Intelligence Committee's conference room, the Pentagon and Space Command - all pre 9/11 of course.. + Informações

Demonstration of a hybrid rocket motor model. Fuel is a hollow tube of acrylic with gaseous oxygen as an oxidizer.. + Informações

This is a hybrid rocket engine made out of hardware parts. Its fuel is polyethylene and its oxidizer is oxygen.. + Informações

It consumed 200g N2O and 8g PE in 15 seconds. The N2O injector was a 0.97mm flare jet. Assuming a specific impulse of 1500 Ns/kg, the average thrust would be around 21N. Next time I'll take a 1.85mm flare jet while also increasing the nozzle diameter from 4mm to 5mm.. + Informações

What a beautiful static test. Notice that the heavy concrete slab was pushed back by 5 cm. For this run I used a longer and heavier-walled PE fuel grain compared to run #7. The grain was improvised by pushing two tubes into each other, which resulted in a shaky assembly -- explaining the combustion instabilities. Also, two large pieces were thrown out towards the end of the run. And then again, it was still not heavy enough (only 222 g N2O from total 322 g were combusted). I already ordered a PE rod to make perfect fuel grains on a turning lathe for the next tests. I also need to replace the exhaust nozzle since it was completely burned up. The throat diameter increased from 5 mm to 8 mm. Next time I use steel instead of brass.. + Informações

An unfortunate incident which temporarily brought a halt to my hybrid rocket engine experiments. On its first test with the newly-fitted electric valve and larger 10-pound nitrous oxide tank, the paraffin-fueled engine suffered a catastrophic pressure-vessel failure and exploded. Before doing so, however, it managed to lift itself and almost 34 kilograms (75 pounds) of concrete nearly a half metre into the air! The burn was intended to test the effectiveness of a rubber washer embedded in the fuel. This washer would theoretically disturb the oxidizer boundary layer flowing over the fuel, creating turbulent flow and leading to a more thorough mixing of oxidizer and fuel. Despite the small amount of fuel actually consumed, a tremendous amount of energy was released, as the extensive damage clearly shows: the aluminum casing was peeled completely back, all the steel retaining bolts were either bent or sheared off, the cast-iron end caps were shattered and the concrete block the assembly was attached to cracked in half. In the end, not a single piece of the actual cylinder was remained useable! Thankfully nobody was hurt. Construction of a stronger engine - constructed from a 3000-PSI rated hydraulic cylinder - proceeded immediately afterwards, and all further tests have been conducted with all personnel safely behind an earthen berm!. + Informações

A video compilation of all my homemade hybrid rocket engine tests conducted during the summer of 2009. *Yes, I have seen "The Dish". That is where the idea from the music came from.. + Informações

Hybrid Rocket Motor Engine Hybridrocket Hybridrakete Hybridmotor Hybrid-Rockets Flying Wing High Power Rocketry Zechlaser UAV Drone Launcher UAVs. + Informações

Third flight of Iso-Haisu hybrid rocket in winter 2012 at Pahkajärvi military area. Apogee was at 1666 meters. Roll-stabilization malfunctioned and height of the apogee was much less than anticipated, but otherwise this was a great launch. More information at eetu.tunk.org Longer video from rc quadcopter: www.youtube.com. + Informações

These two hybrid rocket motor tests were performed in January 2012. They each lasted approximately 5 seconds and put out ~30lbs of thrust.. + Informações

The world's second, and largest, hybrid powered monocopter videotaped by Liberty Launch Systems and posted with their permission. I own the monocopter and built and designed it.. + Informações

10.23.2011 Oxidizer - LN2O Fuel - PE Thrust - 30kgf Altitude - 800m www.hrpl.re.kr. + Informações

This is the first static test with our homemade tar/oxygen hybrid rocket motor. James Turner and myself (Eric Stackpole), and two of our friends, Jeff Bernard and Caleb Lesher did this project last summer because we wanted to learn more about how rocket engines work. We built the rocket in James' garage in Humboldt County, CA completely out of parts we got at the local hardware store. We had previously done a little over 20 tests with polyethylene, but none of them came close to this having much power (note the shaking of the camera when the rocket fires.) The camera did not capture them, but we could clearly see shock diamonds (indicating a supersonic exhaust velocity) running the entire length of the plume. We would have begun working on getting run times longer and perfecting nozzle geometry, but parents made us stop the experiments completely after our first test. There are several even larger rockets we built that we are waiting to be run if we get the chance. Admittedly, we did not know the rocket would be this powerful, and the fist thing we did after this test was build an enclosure with one foot thick walls filled with sand. We'll post more clips as we develop our rocket program.. + Informações