ARC Seminar: Berend G. van der Wall

Recent Work on Rotorcraft Fuselage-Wake Interactions at DLR

All dates for this event occur in the past.

Aerospace Research Center
Aerospace Research Center
2300 W. Case Rd.
Room 100
Columbus, OH 43235
United States


Berend G. van der Wall
Berend G. van der Wall
Berend G. van der Wall

German Aerospace Center
Institute of Flight Systems, Helicopter Branch

Recent Work on Rotorcraft Fuselage-Wake Interactions at DLR

Location: ARC 100
Light refreshments served. 


Berend G. van der Wall is Senior Scientist at the German Aerospace Center (DLR), where he has served for more than 30 years, after obtaining his engineer diploma from TU Braunschweig in 1986. His education includes a Master’s degree from the University of Maryland in 1991 and a Ph.D. from TU Braunschweig in 1999. His subjects of work combine the theory (development of DLR’s S4 rotor simulation code) with about 25 experiments of large-scale rotor and helicopter models in the Large Low-Speed Facility of the German-Dutch Wind Tunnel in the last 30 years, mostly with international cooperation. He headed the US/German and Korean/German MoU’s on Rotorcraft Aeromechanics from 2006-2012, and the DLR/Onera Research Field 5 “The Innovative Rotorcraft” since 2002.

Berend earned major credits in higher harmonic rotor control technology with the well-known HART II test and the International Workshop following it. He was honored by the AHS Howard Hughes Award in 2004 and the AHS AgustaWestland International Fellowship Award in 2012. Since 2000 he has been interested in rotorcraft history, and in 2016 he received the AHS Bernard Lindenbaum Award for a paper about German WW II rotorcraft developments.

His achievements include: the patented design of a low noise rotor blade ERATO that finally became the Blue Edge Rotor blade on Airbus Helicopters brand new H160, a patent on the multi-swashplate control technology called META, a patent on advanced prescribed wake formulation, and others.

Since 2007, he has served as lecturer at TU Braunschweig for Helicopter Aerodynamics and Rotor Dynamics and became honorary professor there in 2014. Berend recently authored three books: a textbook on helicopter aerodynamics, a second textbook on helicopter rotor dynamics (unfortunately, both in German language), and another text on German Rotating-Wing Developments during WW II.


Abstract
This presentation will provide an overview of recent work at Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR, the German Aerospace Center) on helicopter aerodynamics, including modeling of fuselage-rotor interference, and rotor vortex interactions. This seminar presentation will be a summary of two recent conference presentations:

van der Wall, B.G., Wentrup, M., Rajagopalan, G., Jung, S.N., Yin, J.:
“A Simple Analytical Model for Investigation of Fuselage-Rotor Interference”
72nd Annual Forum of the American Helicopter Society, West Palm Beach, FL, May 17-20, 2016

van der Wall, B.G.:
“Rotor Thrust and Power Variations During In-Plane and Orthogonal Vortex Interaction”
7th Asian/Autralian Rotorcraft Forum, Jeju Island, Korea, Oct. 30-Nov. 1, 2018


Hosted by Professor James W. Gregory, Department of Mechanical and Aerospace Engineering and Aerospace Research Center. 


 

Category: Seminar