Keeping eco-design and circular economy principles preserved in technology development
A decision-support guide for R&D practitioners in aerospace technology development.
Decision-Support Playbook
In aerospace technology development, design freedom is highest at the earliest stages of development, precisely when the data needed to defend sustainable intentions does not yet exist. By the time lifecycle impacts can be quantified and end-of-life strategies assessed, the fundamental design is frozen. Sustainability ambitions set at the start of a project face diminishing conditions for survival at every decision gate that follows.
This digital playbook gives R&D practitioners the criteria, framing language, and methods needed to keep eco-design and circular economy principles alive as a project progresses through decision gates. It is designed for cabin component development in an aerospace context, and its core function is commercial translation: reframing criteria in terms that survive the logic switch that occurs when program and financial stakeholders take over from design teams.
Navigate by Technology Readiness Levels to find criteria and framing language for your current maturity level. Consult the best practices section to understand what organizational conditions have protected circular intent in real projects. Use the method and tool navigator to find the right approach for your specific barrier, whether informational, commercial, organizational, or regulatory.
No prior sustainability expertise required. Designed to be consulted in the moment, not read linearly.
01 — Foundations
Three Core
Concepts
Three concepts underpin this tool. Eco-design is the method, embedding environmental criteria into design decisions before they become costly to reverse. Circular economy provides the strategic goals, keeping materials in use at their highest value for as long as possible. Technology Readiness Levels provide the structure, a nine-level maturity scale that determines how much design freedom remains and what evidence can realistically be provided at any given stage. Understanding all three is necessary to use this playbook effectively.
The integration of environmental criteria into the earliest stages of product design, before decisions become costly to reverse. Most of a product's environmental impact is locked in during its initial design stage, making early-stage integration the highest-leverage point in the entire development process.
MethodA resource management model oriented toward keeping materials in use at their highest possible value. In aviation cabin development, this shifts the goal from replacing components to recovering their material value. Strategies are ordered by value retention, from reuse and remanufacturing at the top, to recycling as a final intervention.
Strategic GoalA nine-level scale used to assess the maturity of a technology, from initial concept to full operational deployment. This tool organizes those nine levels into three clusters that reflect how design freedom and data availability shift across development. Early stages (TRL 1–3): design freedom is highest, but available data is most limited; the critical window for embedding circular criteria. Mid stages (TRL 4–6): key design decisions are progressively locked in as testing moves from laboratory to relevant environments. Late stages (TRL 7–9): the design is effectively frozen and the focus shifts to certification, industrialization, and deployment. The transition from TRL 6 to TRL 7 marks the point at which unresolved sustainability criteria are effectively eliminated.
Framework02 — Modules
Three Entry
Points
Each module addresses a different dimension of the same challenge: keeping circular intent alive as a project moves from concept to certification.
Navigator
Criteria, framing, and data guidance organized by TRL cluster. Know what is still designable, what evidence is available, and how to defend circular choices at gate review.
Open moduleWorks
Organizational conditions that have protected circular intent in practice. For each example: what condition was in place, why it worked, and how a practitioner can approximate it.
Open module& Tools
A use-this-when overview of methods and tools mapped to TRL stage and barrier type. From value chain mapping to pLCA, find the right instrument for the right moment.
Open module