A System of Systems Aircraft Design Framework: Demonstration Using a Seaplane Transport Network in the Greek Islands

This paper presents a System of Systems Engineering approach to aircraft design. For this purpose, conventional design disciplines are coupled with Agent-Based Modeling and Simulation (ABMS) defining a unique optimization problem. The proposed methodology is applied to design seaplanes for an on-demand transportation system connecting the Greek...

Assessment of Conceptual Hybrid-Electric Regional Aircraft with Boundary-Layer Ingestion Propeller

Boundary Layer Ingestion (BLI) is a promising propulsion concept for aviation, aiming to reduce fuel burn. This configuration involves using the propulsor to ingest the boundary layer from the fuselage or wing. Typically, aircraft with BLI propulsors also integrate a hybrid-electric powertrain. This integrated setup has shown potential in fuel...

Aircraft Integration of Air-Based Thermal Management Systems for Propulsive Fuel Cell Systems

Hydrogen is seen as a potential energy carrier for the next generation of aircraft that will be more climate-friendly than the previous generation of kerosene-powered aircraft. Two types of hydrogen-based propulsion systems are currently foreseen for such aircraft: hydrogen combustion and hydrogen fuel cell. In addition to producing useful...

Hybrid-Electric Aircraft with Over-the-Wing Distributed Propulsion: Aerodynamic Performance and Conceptual Design

Recent developments in the field of hybrid-electric propulsion (HEP) have opened the door to a wide range of novel aircraft configurations with improved energy efficiency. These electrically-driven powertrains enable “distributed propulsion” configurations, in which the aerodynamic interaction between the propulsive devices and the airframe is...

Development of a Hydrogen-powered Fuselage-mounted BLI Propulsor Add-on for Passenger Aircraft

The concept of an "Auxiliary Power and Propulsion Unit" (APPU) is introduced, which consists of a Boundarylayer ingesting (BLI) propulsor with an engine mounted at the rear of an passenger aircraft fuselage, replacing the Auxiliary Power Unit (APU) and contributing around 10% of total cruise thrust, as well as auxiliary power. This APPU unit is...

Efficient Modeling of Hybrid-Electric Aircraft for Design and Performance Optimization Studies

The world is faced with two concurrent trends. The first is the growing demand for air travel in the long term. The second is the need to cut aircraft emissions due to environmental goals and ambitions set by authorities. Fully-electric aircraft are currently infeasible due to the limited battery specific energy and power. Hybrid-electric...

A coupled propulsion and thermal management system for hybrid electric aircraft design: A case study

Air transport is facing an important challenge when it comes to the reduction of its environmental footprint. Hybrid electric aircraft offer a potential solution to reduce in-flight emissions. The essence of hybrid electric aircraft is to combine multiple energy sources and energy conversion systems, in order to improve the overall energy...

An Overview of the Conceptual Design Studies of Hybrid Electric Propulsion Air Vehicles in the Frame of Clean Sky 2 Large Passenger Aircraft

In the Clean Sky 2 Large Passenger Aircraft (LPA) program the potential of innovative hybrid electric propulsion (HEP) air vehicle concepts has been investigated by the projects ADEC (Advanced Engine and Aircraft Configuration) and NOVAIR (Novel Aircraft Configurations and Scaled Flight Testing Instrumentation). In a combined effort the members...

The Effect of Maneuver Load Alleviation Strategies on Aircraft Performance Indicators

The need to reduce the pollutant impact of aircraft emission drives the research on aircraft design progress through off-design performance improvement. This report proposes to investigate the effect of maneuver load alleviation technology via wing control surfaces. A methodology is presented to model the MLA technology in aircraft conceptual...

Conceptual Design of High Subsonic Prandtl Planes

The increasing airtraffic demands on aircraft capacity, sustainability and profitability, require the investigation of unconventional aircraft configurations with high aerodynamic efficiency, as the commonly applied fuselage-wing-tail configuration shows to reach an optimum in that respect which cannot be further improved using current...

Investigation into the effects of advanced technologies on overall aircraft performance in a collaborative design environment

For the past decades concerns over the effect of aviation on the local air quality have risen, with mitigation remaining a priority for industry. To meet the CO2 reduction goal of 75% compared to 2005 levels, set out by the European Commission report 'Flightpath 2050', more assessment on future aircraft technologies and their potential in...

A hybrid method for the interior and exterior design of blended-wing-body cabins

Considering the fact that all large commercial aircraft have not changed significantly in their tube–and–wing shape during the past few decades, one would suggest that a completely different configuration is necessary to facilitate a new leap forward in aircraft performance. The blended–wing–body is potentially such an alternative configuration....