Assessment of Rotorcraft Download Using Helios v8

Speaker: Andrew Wissink, US Army Aviation Development Directorate, NASA Ames Research Center
October 10, 2018

Presentation

Abstract

Rotorcraft download is an important design consideration for the design of hovering vehicles. High fidelity Computational Fluid Dynamics (CFD) predictions of download are time consuming to compute and the presence of unsteady bluff-body ow shedding over the helicopter fuselage challenges CFD's ability to predict correct drag. This paper investigates the application of HPCMP CREATETM-AV Helios Version 8 for download prediction. In particular the application of the automated runtime strand mesh generation that is a new feature of the mStrand solver in Hv8 is investigated and compared to results obtained with the Unstructured FUN3D and Structured curvilinear OVERFLOW solvers that have been used for download calculations in the past. Results are presented for the JVX model-test which includes both isolated rotor calculations as well as rotor/wing interactions.

Biography

Andrew Wissink works for the US Army Aviation Development Directorate at NASA's Ames Research Center in Moffett Field, CA. He manages development of the U.S. Army's Helios high-fidelity CFD/CSD coupled rotary-wing simulation code and has participated in its development since 2006. Before joining the Army he worked in the Center for Applied Scientific Computing at Lawrence Livermore National Lab from 1999-2006 and as an on-site contractor at NASA Ames from 1996-1999. He received a Ph.D. in Aerospace Engineering from the University of Minnesota in 1997.

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