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Sebastian Timme

Professor Sebastian Timme
Dipl.-Ing., PhD, FHEA, FRAeS

Research

Delayed DES of transonic shock buffet

Computational Aerodynamics

The detailed description of fluid flow is critical to meet the ambitious economic and environmental targets of future air transportation, in terms of fuel burn and CO2, NOX and noise emissions. Shock buffet is one such example of a grand challenge of transonic aircraft aerodynamics. Despite intense research efforts for the last half a century, the details of the physical phenomenon are not unequivocally accepted.

Aeroelastic simulation of aircraft gust encounter

Computational Aeroelasticity

Two important tasks of aircraft loads and aeroelastics are aeroelastic-stability and gust-loads analyses. The former requires that the aircraft is designed to be free of aeroelastic instability (including flutter, divergence, control reversal, and loss of stability and control due to structural deformation) for all configurations and design conditions. The latter involves the determination of the loads on each part of the structure by dynamic analysis accounting for unsteady aerodynamics, flexible structures, and flight dynamics. In addition, a sufficient number of discrete gust gradient distances must be considered to find the critical case for each quantity of interest, and response to continuous turbulence is required, too.

Reduced order gust simulation

Model Order Reduction

The challenge of computational fluid dynamics within the multidisciplinary aircraft loads and aeroelastics context is the immense computational cost while offering high fidelity. Model order reduction is an attempt to keep the predictive capabilities of a high fidelity aerodynamic model and, at the same time, it is the chance to enable a more routine application within an industrial setting with significantly reduced computational cost.

Research grants

Development of Advanced Wings Solutions (DAWS)

INNOVATE UK (UK)

August 2020 - October 2023

Development of CFD Methods for Future Digital Aircraft Design

AIRBUS (UK)

October 2019 - September 2023

Extending the buffet envelope

ENGINEERING & PHYSICAL SCIENCES RESEARCH COUNCIL

October 2018 - March 2022

Investigation of transonic shock buffet and its control

AIRCRAFT RESEARCH ASSOCIATION LIMITED (UK)

October 2016 - September 2019

Airframe Aeroelastic Analysis, Design and Development using Computational Fluid Dynamics

ROYAL ACADEMY OF ENGINEERING (UK)

September 2016 - June 2017

Aeroelastic Gust Modelling (AEROGUST).

EUROPEAN COMMISSION

May 2015 - July 2018

Buffet Control of Transonic Wings (BUCOLIC).

EUROPEAN COMMISSION

September 2013 - August 2015