Throttleable Liquid Propulsion Demonstrator Explained

Throttleable Liquid Propulsion Demonstrator (TLPD) is a prototype liquid-propellant rocket engine being developed by ESA.^{[1] [2]}

It uses storable propellant: hydrogen peroxide and ethanol.The engine has a nominal thrust of 5 kN, and using a pintle injector, the thrust can be varied between 20% and 110%.^[1]

The development program is part of ESA's Future Launchers Preparatory Program.^[1]

Test firings were done in 2024.^[2]

Notes and References

1. https://www.spacedaily.com/reports/Variable_Thrust_Rocket_Engine_Passes_Initial_Hot_Fire_Tests_999.html Variable-Thrust Rocket Engine Passes Initial Hot-Fire Tests
2. https://phys.org/news/2024-08-early-variable.html Promising early tests for variable-thrust landing engine