PEPEk Rocket Engine
A PEroxide Propulsion Element

Key design parameters of the concept

Storable, non toxic, environmentally friendly propellants:

• H2O2 + Hydrocarbon fuel

Hypergolic (i.e. spontaneous) ignition by means of a special (starting) hypergolic fuel mixture:

• No ignition system required, no solid catalyst required
• Restart ability
• Allows to use a stabilized technical grade peroxide

Variable injector wetted area:

• Highly throttle-able (Thrust level lower limit only due to chamber cooling constraints and/or nozzle flow separation.)
• Gradual startup / shutdown sequences, low risk of a hard start
• An idle run possible (a “standby” mode)

Lower chamber temperature, moderate chamber pressure:

• Better reusability (longer lifespan)

Propellants supplied by means of electric pumps:

• Simple and reliable pumping system
• Low pressure propellant tanks for enhanced user friendliness and safety level and lower mass.