The Boston University Rocket Propulsion Group have posted a new update of their last year of rocket development activities. As is known the team switched from a hybrid rocket motor to a liquid fueled engine to power their Starscraper suborbital rocket, the last few months has seen the team test this engine.
Boston University Rocket Propulsion Group have completed the first cold flow tests of their new Lotus liquid fuelled rocket engine, as shown in a recent facebook post the test was a success.
Lotus in a cluster configuration is intended to replace the hybrid rocket motor of Starscraper, the groups suborbital capable rocket.
To read more about lotus, visit the team’s page, http://www.burocket.org/lotus/.
The team at Boston University Rocket Propulsion Group have switched gears since returning from summer break and are hard at working prepping their Starscraper rocket up for its maiden suborbital flight.
Part of the work that has been going on is to change Starscrapers hybrid rocket engine to a liquid fuelled rocket engine, quite the design change, I asked the team via twitter the reason for the change and got the following response, “driven by costs, but an overall higher confidence in a proven liquid development engine’.
The engine named ‘Lotus’ will still utilize nitrous oxide as the oxidizer, and now isopropanol as the fuel, Starscraper will use two of these engines, each setup on gimbals to provide active stabilization control for its flight profile.
Work continues on the rocket with modifications to the airframe to include the new fuel tank and engine cluster structure.