# Aero-Chair Ltd: Economy Class Aircraft Seat Design Proposal
> Explore a technical design proposal for lightweight, CS-25 compliant economy aircraft seats featuring sustainable materials and ergonomic engineering.

Tags: aerospace-engineering, industrial-design, aircraft-interiors, sustainable-design, product-development, manufacturing-plan, engineering-proposal
## Economy Class Aeroplane Three-Seat Set
*   **Project:** Design Proposal for Aero-Chair Ltd (T-Level Engineering).
*   **Specifications:** 450mm seat width, 8.0 kg weight per seat, £7,160 cost per three-seat set.

## The Design Challenge
*   **Goal:** Create comfortable, safe, lightweight, and affordable commercial aircraft seats.
*   **Constraints:** £15,000 max budget, 8.0 kg max weight, 26-week delivery deadline.

## Technical Solution
*   **Structure:** Aluminium frame (3x lighter than steel) with fixed headrests and fold-up armrests.
*   **Features:** Integrated tray table (267x419mm), life vest storage, and no-pinch hazard casing.

## Materials and Sustainability
*   **Aluminium 6061-T6:** Used for frame/structure, 73% sustainable content.
*   **HR Polyurethane Foam:** CS-25 compliant cushioning (1.2 kg/seat).
*   **Recycled PET Fabric:** Seat covers made from recycled bottles, saving 1.5 kg CO₂/m².
*   **Stainless Steel 304:** High-strength, corrosion-resistant bolts and fittings.

## Ergonomics and Mechanisms
*   **Recline:** 3° to 6° gentle recline.
*   **Seatbelt:** Metal tongue and buckle system compliant with CS-25 §25.785.
*   **Ergonomics:** 410mm seat height for optimal foot placement; 220mm lumbar support height.

## Budget and Manufacturing
*   **Cost Breakdown:** Materials (£1,200), Labour (£483), Testing (£1,100), Overheads (£2,881).
*   **Timeline:** 26 weeks from design finalization to QC and delivery.
*   **Compliance:** 14/14 PDS requirements met, including 16g deceleration testing and Equality Act 2010 compliance.
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