Parameter

4.7.3.4 riblets

Riblets are small longitudinal grooves or ridges (about 0.1 mm wide) on an aircraft's surface, inspired by shark skin, designed to reduce drag by manipulating the boundary layer flow. Riblets work by disrupting turbulent streamwise vortices near the surface, reducing momentum exchange and thereby reducing skin friction drag (which accounts for >40% of total aircraft drag). They are typically used on wings, fuselages, and other areas where drag reduction is critical. Riblets can achieve 4–8% viscous drag reduction, resulting in improved fuel efficiency (up to 2% overall aircraft drag reduction when applied to entire airframe) and reduced CO₂ emissions. They can be applied as adhesive-backed film that can be retrofitted to existing aircraft

Hierarchy

4 technological themes

4.1 active aircraft control

4.2 data transfer technologies

4.3 energy carriers

4.4 net zero technologies

4.5 operational technologies

4.6 aircraft propulsion

4.7 aircraft structures

4.7.1 aerospace materials & manufacturing

4.7.2 aircraft fuselage

4.7.3 aircraft wings

4.7.3.1 in-wing energy storage

4.7.3.2 morphing structures

4.7.3.3 wing smart structures

4.7.3.4 riblets

4.7.3.5 flow control (passive) on wings

4.7.3.6 high aspect ratio wing

4.7.3.7 foldable winglets

4.7.3.8 foldable wings

4.7.3.9 flexible skin

4.7.3.10 laminar wings

4.7.3.11 prandtl plane

4.7.3.12 truss-braced wing

4.7.3.13 tube and wing optimization

4.7.3.14 wing bio-mimicry

4.7.3.15 passive load alleviation

4.7.3.16 wing structure as conductor

4.7.3.17 light/low mass paint/decals on wings

4.7.3.18 passive canards

4.7.3.19 in-flight cleaning of natural laminar flow leading edges

4.7.4 secondary structures

Scenario relevance

Number of parameter occurrence per scenario.

Input

Output

1

2

Optimising together

N/A

Stripping down

N/A

Tech for you

N/A

Mad max

Milestone Timehorizon

PESTEL categories

Incoming dependencies Outgoing dependencies

Show tags

Current

Short term

Medium term

Long term

Governance & Operations

A unified global regulatory, legal, and data framework for the net-zero transition and seamless air travel.

2

Binding Global Mandate

1

Common Data Standards

2

Innovation Sandboxes

3

Collaborative Governance Blueprint

1

Ratifying The Treaty

2

Demonstrating Unified ATM

1

Establishing The Enforcer

1

Mutual Certification

2

Implementing Unified ATM

1

Collaborative Mandate Management

1

Multi-Modal Integration

2

Adaptive Governance

Environment & Economy

A self-sustaining, circular aviation market supported by established economic and industrial models.

2

Common Emissions Standard

3

Secure Initial Funding

1

Validate Scaling Paths

2

Mandate Circular Design

2

Deploy Hub Infrastructure

1

Operationalize Incentives

1

Launch Circular Supply Chains

1

Internalize Emission Costs

5

Complete Fleet Renewal

1

Secure Energy Supply

2

Achieve Full Circularity

2

Confirm Economic Viability

Technology & R&D

A fully developed, certified, and deployed ecosystem of net-zero technologies, from new propulsion to full autonomy.

3

Ground-Test Propulsion

1

Digital Twin Architecture

1

Validate Foundational AI

2

Pilot Efficiency Concepts

1

Flight-Prove Propulsion

1

Deploy Gen 1.0 Digital Twin

2

Certify Reduced Crew

3

Certify All Aircraft

1

Implement Autonomous Cargo

1

Implement Autonomous ATM

2

Optimize With Digital Twin

2

Launch Gen 2.0 R&D

Society & Human Capital

A fair, equitable, and human-centric transition that ensures public trust and a fully integrated future workforce.

0

Analyze Skills Gap

0

Build Social License

0

Ratify Just Transition

2

Launch Reskilling Programs

0

Define Equity Standards

2

Demonstrate Just Transition

1

Ensure Remote Access

1

Build Trust In Autonomy

1

Permanent Transition Monitoring

2

Verify Universal Access

2

Achieve Full Public Trust

1

Integrate New Workforce

Little to many relations with other Milestones