RPA (Rocket Propulsion Analysis) is the tool to own for liquid fuelled rocket engine design.
Although, having been around for a while, downloading the latest update I thought it may make a good post to talk about for those who have never come across it.
Basically, RPA allows you to design your liquid rocket engine from the ground up, carrying out performance analysis, chamber sizing, chamber cooling analysis to name a few of the features.
It is very easy to use and allows quick design and iteration of your rocket engine and can also export a .dxf file of the inner engine geometry for further CAD design.
It can be downloaded as a trial in the lite edition but I would highly recommend buying a full version, it will be an investment you would not regret.
The student team, SDSU Rocket Project, have been out testing their Galactic Aztec rocket this past weekend at the FAR site in Mojave. With a new LR101 rocket engine implemented in a gimbal system, the team pulled off a successful test of this combination.
Video Caption: BPM-5 engine test day
the 4th of February 2017
As something new, we used our pressurisation system actively by changing the engine chamber pressure along the way. We tried to keep the O/F ratio constant and change the feed pressure so the chamber pressure would increase.
We would then be able to map the O/F ratio and chamber pressure with just a few tests.
by Copenhagen Suborbitals www.copsub.com
Interstellar Technologies Inc. who are working towards a guided suborbital rocket flight (Momo) and eventually a small satellite launcher, have recently been making progress with their control system experimentations.
LEAP or Flight test for attitude control is a vertical take off lunar landing looking rocket that has been designed to test the team’s control system. Four flights have been carried out so far, and as can be seen in the video’s below, steady progress has been made.
Although not new video’s, I thought it was worth posting as it is interesting to watch and see the teams progression to date.
The team were due to hot fire test their Galactic Aztec Heavy rocket but ran into a few minor issues that forced a scrub.
Galactic Aztec Heavy is powered by an LR-101 rocket engine, is 25ft in height and 650lbs in weight and is expected to reach 50,000ft with a top speed of Mach 1.3.
Video Cation: Video from the 2nd test run out of four on February 4, 2017. This is the same BPM-5 engine being tested, which is also going to be flying with the Nexø II rocket, launching early this summer. For more information visit: www.copsub.com