The adoption of ultra-high bypass ratio (UHBPR) engines has been long recognised to bring
about reduction of specific fuel consumption and noise emission. In the need to fulfil …

Turbofan engine technology has been widely used for propulsion of commercial airplanes in
the subsonic range. Since the early 70's, turbofan's efficiency has greatly evolved, driven …

In the context of aircraft applications, the overall design process can be challenging due to
the different aerodynamic requirements at several operating conditions and the total …

For many aerodynamic design tasks, a key challenge is the balance between the non-
linearity of the transonic flow, the inherent 3D nature of the geometry and flow field, the …

It is envisaged that the next generation of civil aero-engines will employ high bypass ratios
to lower specific thrust and improve propulsive efficiency. This trend is likely to be …

Purpose Aerodynamic shape optimisation is complex because of the high dimensionality of
the problem, the associated non-linearity and its large computational cost. These three …

Low order models can be used to accelerate engineering design processes. Ideally, these
surrogates should meet the conflicting requirements of large design space coverage, high …

The integration of next-generation high-bypass turbofan engines poses a major challenge to
the aeronautical industry due to the larger fans necessary to achieve more fuel-efficient …

This paper presents a newly developed methodology for multipoint aerodynamic design of
ultrashort nacelles for ultrahigh-bypass-ratio turbofan engines. An integrated aerodynamic …

The inherent mathematical smoothness of intuitive class shape transformation (iCST) curves
has been shown to be suitable for the design of aerodynamic shapes. However, this …