HYBRID ENGINE SYSTEMS
In the course of four years, the Sounding Rocketry Team (SRT) has designed, built, and tested four different flight-ready hybrid engines. Flight-ready engines have been designed from the start to be integrated into existing or developmental vehicles created by SRT. Additionally, each engine is tested in its flight configuration at a team-maintained vertical test cell. All engines built by SRT are pressure-fed; this means our engine designs do not have any pumps. Propulsion team members go through a rigorous design and testing (hydrostatic) process to ensure these engines are safe to operate as well as meet the performance specifications outlined by overall team goals.
Click below to learn more about each of our past engines.
SRT follows a similar naming convention to those used by the Tripoli Rocketry Association (TRA) and the National Association of Rocketry (NAR) for engines created by the team.* Certified commercial motors use a leading letter indicating the impulse class followed by a number specifying the average thrust of the motor. For more information as to how TRA and NAR name certified engines & motors please visit the NAR website page.
Minimum and maximum impulse defines the theoretical impulse range of a given engine design. Engines are designed to operate in the middle of their range. The operating peak thrust is the highest thrust the engine will deliver in its intended operating configuration. Project name is given to the design by the creating year. Version roman numeral denotes major design changes. For example, a particular engine may be fitted with a brand new injector design. This configuration will now be described as a new version of the original design.
*Engines built by SRT are considered "research" propulsion systems by TRA and are not certified.