Practice 02 of 05 — Propulsion

Propulsion thinking that shapes
mission pathways, trade-offs, and
technical credibility.

From architecture trade studies to performance modelling and design review, TROY Aerospace helps organisations understand what propulsion logic their mission or concept actually requires.

Practice Overview

Propulsion is rarely just a subsystem choice.
It often determines what kind of mission is possible at all.

Propulsion affects mass, power, timeline, flexibility, mission architecture, and long-term feasibility. For some teams, the question is which propulsion approach best fits an existing mission. For others, the propulsion logic may redefine the mission itself. TROY Aerospace provides independent support that helps teams understand these trade-offs early and clearly.

Service 01 of 03

Trade Study Support

Propulsion Architecture Trade Studies

We provide independent propulsion trade studies for missions and technical concepts where chemical, electric, cold gas, green propellant, or more advanced approaches need to be compared credibly. This includes both practical small-mission work and more ambitious future-facing concepts.

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What we cover

  • Propulsion architecture comparison across candidate approaches
  • Mission-fit analysis against key constraints and objectives
  • Specific impulse, thrust, and mass implications
  • Complexity, maturity, and programme implications
  • Support for concept studies, internal reviews, and stakeholder decisions
  • Translation of technical trade-offs into clearer decision logic

Tools & methods

Python / PoliastroNASA Technical Reports ServerESA propulsion sourcesAIAA literature

Service 02 of 03

Design Review

Small-Mission Propulsion Review

For CubeSats and small-spacecraft concepts, propulsion often appears simple until integration, safety, performance, or approval logic become more serious. We provide independent review of small-mission propulsion options and their fit to the wider mission architecture.

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What we cover

  • Review of cold gas and green-propellant approaches for small missions
  • Mass, power, and systems-fit implications
  • Basic performance logic and feasibility review
  • Integration and operational considerations within the wider mission
  • Support for technical documents, proposals, and concept revisions
  • Independent perspective on whether the propulsion path is proportionate to the mission need

Tools & methods

Engineering reviewPublished test dataECSS referencesPython / NumPy

Service 03 of 03

Performance Modelling

Electric Propulsion Performance Support

Electric propulsion can be highly attractive for the right missions, but the operational, power, and integration implications are often underestimated. We provide modelling and analytical support that helps teams understand performance and the broader system consequences more clearly.

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What we cover

  • Performance modelling for candidate electric propulsion concepts
  • Mission-fit implications for station-keeping, transfer, or long-duration use
  • Plume, efficiency, and operating-envelope considerations
  • System-level implications for power and spacecraft integration
  • Support for selection decisions and architecture reviews
  • Independent perspective on whether electric propulsion adds value or complexity in context

Tools & methods

PICLasOpenFOAMPython / SciPyPublished Hall thruster datasets

Need a propulsion trade study,
review, or mission-fit assessment?

We can help clarify which propulsion logic best fits the mission, the concept, and the wider technical pathway.

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