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Objectives

The LEROS MHT-1N
European High Reliability 1N hydrazine thruster

Design and development of a European Advanced Monopropellant 1N thruster that offers greater pulse and Isp performance together with extended functional life capability than all existing ‘flight-proven’ heritage designs.
Challenges
The challenge was to design, manufacture and prove through extensive testing a European 1 Newton hydrazine thruster that would out-perform existing 1N offerings in terms of pulsed and steady state operation whilst offering excellent performance which exceeds 228 seconds Isp and up to 1.38N thrust at 24 bar inlet pressure. In parallel with this advanced thruster development, the High Altitude Test Facility at Westcott UK has been taken to World Class capability in order to provide high accuracy measured thrust for every MHT-1N produced.
System Architecture
The MHT-1N thruster incorporates an innovative Thrust Chamber Assembly with highly optimised injector and catalyst retention designs that have been proven over a multi-year development programme and subsequent ESA Qualification programmes.
Plan
The MHT-1N is fully designed, qualified and Flight Models are being manufactured, tested and delivered.
Current Status
The thruster is in full-scale supply mode and, as orders continue to build, will become the industry standard for the 1N hydrazine class thruster. Project Completed.
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