LINEARISED FREQUENCY DOMAIN GUST ANALYSIS OF LARGE CIVIL AIRCRAFT

Bekemeyer, Philipp, Thormann, Reik and Timme, Sebastian ORCID: 0000-0002-2409-1686 (2016) LINEARISED FREQUENCY DOMAIN GUST ANALYSIS OF LARGE CIVIL AIRCRAFT. In: VII European Congress on Computational Methods in Applied Sciences and Engineering, 2016-6-5 - 2016-6-10, Crete Island, Greece.

Text ECCOMAS2016_PB.pdf - Author Accepted Manuscript Download (2MB)

Abstract

Predicting loads due to atmospheric turbulence is crucial in the aircraft design and certification process. Efficient methods are important regarding the large number of simulations needed to cover the parameter space of e.g. Mach number, flight altitude and gust shape. Since commercial aircraft operate at transonic flight speeds, applied methods should consider aerodynamic nonlinearities such as shocks and boundary layer separation. Based on a recently presented method using frequency domain computational fluid dynamics for gust interaction, an extension towards industry-relevant three-dimensional cases is proposed. Results are shown for a large civil aircraft solving the Reynolds-averaged Navier-Stokes equations. Complex-valued surface pressures from time-linearised simulations are compared to nonlinear unsteady time-marching investigations. Responses to 1-cos gusts are obtained to discuss time histories of load factors and worst case surface pressure distributions.

Item Type:	Conference or Workshop Item (Unspecified)
Depositing User:	Symplectic Admin
Date Deposited:	02 Jun 2016 13:57
Last Modified:	19 Jan 2023 07:36
DOI:	10.7712/100016.2341.5316
Related URLs:	Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3001484