Parameter

4.6.1.4 boundary layer ingestion rear end installation

Boundary Layer Ingestion (BLI) rear end installation refers to a propulsion system where an engine or fan is positioned at the rear of an aircraft, designed to ingest the boundary layer airflow that forms along the aircraft's fuselage. By ingesting this typically low-energy airflow, the engine can potentially increase its efficiency, as the energy that would otherwise be lost as drag can be recovered and converted into thrust.
This concept aims to reduce fuel consumption and emissions, particularly in hybrid or electric propulsion systems, by making more efficient use of the airflow around the 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
4.6.1 propulsor integration on airframe
4.6.1.1 over-wing propulsors
4.6.1.2 forward fuselage mounted fans
4.6.1.3 tail cone thruster (e.g. starc-abl)
4.6.1.4 boundary layer ingestion rear end installation
4.6.1.5 in-wing distributed propulsion
4.6.1.6 retrofitting new propulsion systems
4.6.1.7 propulsive fuselage
4.6.2 converting shaft power to thrust
4.6.3 converting fuel to shaft power
4.6.4 non-combustion based engine integration
4.6.5 other propulsion technologies
4.7 aircraft structures

Scenario relevance

Number of parameter occurrence per scenario.

Input
Output
1
1
Optimising together
N/A
Stripping down
N/A
Tech for you
N/A
Mad max

Milestone Timehorizon

PESTEL categories

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