The Ateneo de Davao University (#AdDU) team are #AeronauticalEngineering students.

Their #HybridRocket #Sibol competed in the solid propulsion (solid propellant), specifically the 10k Commercially Off-the-Shelf (COTS) category.

The #SpaceportAmericaCup is held every year and is the largest intercollegiate competition in #Rocketry. #Philippines

Ateneo students successfully launch rocket in #US competition
https://newsinfo.inquirer.net/1954098/ateneo-students-successfully-launch-rocket-in-us-competition

"#UKZN Launches Another #Rocket!"

"A UKZN-made #Phoenix1D #hybridrocket demonstrator, carrying experimental sensors and cameras, has been successfully test launched"

"..took off from the #OverbergRange in the Western Cape, was developed by the University’s Aerospace Systems Research Institute (#ASRI) Space Propulsion Programme."

https://ndabaonline.ukzn.ac.za/UkzndabaStory/Vol11-Issue08/UKZN%20Launches%20Another%20Rocket/

#Rakete #Raumfahrt

23.3.2023

Hybrid Rocket Engine Combines Ceramic Aerospike With 3D Printed Fuel

[Integza] has worked hard over the last year, crafting a variety of types of rocket and jet engine, primarily using 3D printed parts. Due to the weaknesses of plastic, all of which conflict with the general material requirements for an engine that gets hot, he has had less thrust and more meltdowns than he would have liked. Undeterred, he presses on, now with a hybrid rocket aerospike design. The goal? Actually generating some thrust for once!

The latest project makes the most of what [Integza] has learned. The aerospike nozzle is 3D printed, but out of a special thick ceramic-loaded resin, using a Bison 1000 DLP printer. This allowed [Integza] to print thicker ceramic parts which shrunk less when placed in a kiln, thus negating the cracking experienced with his earlier work. The new nozzle is paired with a steel rocket casing to help contain combustion gases, and the rocket fuel is 3D printed ASA plastic. 3D printing the fuel is particularly cool, as it allows for easy experimentation with grain shape to tune thrust profiles.

With the oxygen pumping, the new design produces some thrust, though [Integza] is yet to instrument the test platform to actually measure results. While the nozzles are still failing over a short period of time, the test burns were far less explosive - and far more propulsive - than his previous efforts. We look forward to further development, and hope [Integza's] designs one day soar high into the sky. Video after the break.

#3dprinterhacks #hybridrocket #rocket

An Attempt At 3D Printing A Hybrid Rocket Engine

Liquid fuelled engines are throttleable and monstrously powerful, but highly complex. Meanwhile, solid rocket engines are simple and cheap, but once you light them, they're going full-bore until burnout. Hybrid rocket engines offer perks from both worlds, with simple solid fuel and the ability to throttle down by regulating oxidizer flow. Naturally, [Integza] decided he should try and 3D print one.

The build came about somewhat by accident, as the 3D printed casing of one of [Integza's] liquid-fuelled rockets continued burning once the fuel was turned off. This prompted the realization that he could 3D print rocket fuel, and simply supply oxygen, creating a hybrid rocket. Thus ensued much experimentation, going so far as to create custom sugar-loaded resin for more power and experimenting with ABS as a potential fuel.

Most of the rockets self-destructed within a few seconds and thrust was minimal, but the basic concept should be a goer. As always, [Integza] is struggling with the thermal limitations of plastics, but we fully expect he'll one day get to a flight ready engine. His previous experiments show he certainly doesn't give up. Video after the break.

#3dprinterhacks #3dprintedrocket #hybridrocket #rocket