Richard, Hugues and Raffel, Markus and Meier, G.E.A (2000) Background Oriented Stereoscopic Schlieren Applied to a Helicopter in Flight. In: American Helicopter Society 56th Annual Forum, pp. 1-7. American Helicopter Society 56th Annual Forum, 2.-4. Mai 2000, Virginia Beach, VA, USA.
Full text not available from this repository.
Official URL: https://vtol.org/store/product/background-oriented-stereoscopic-schlieren-applied-to-a-helicopter-in-flight-4888.cfm
Abstract
In this paper we present a novel measurement technique based on the refractive index variation in a compressible flow field. This concept is referred to as "Background Oriented Schlieren" (BOS) in the following. The differences between BOS and other optical techniques which it can best be compared with, will be discussed. Experimental studies have been carried out to investigate the blade tip vortices of a BK117 helicopter in hover flight. An extension will be presented which uses two cameras placed in stereoscopic arrangement. Both techniques allow very easily to visualize compressible structures like tip vortices and seem to well complete other optical techniques like shadowgraph or schlieren, and additionally they give some quantitative informations.
Item URL in elib: | https://elib.dlr.de/128019/ | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Document Type: | Conference or Workshop Item (Speech) | ||||||||||||
Title: | Background Oriented Stereoscopic Schlieren Applied to a Helicopter in Flight | ||||||||||||
Authors: |
| ||||||||||||
Date: | 2000 | ||||||||||||
Journal or Publication Title: | American Helicopter Society 56th Annual Forum | ||||||||||||
Refereed publication: | Yes | ||||||||||||
Gold Open Access: | No | ||||||||||||
In SCOPUS: | No | ||||||||||||
In ISI Web of Science: | No | ||||||||||||
Page Range: | pp. 1-7 | ||||||||||||
Status: | Published | ||||||||||||
Keywords: | Background oriented schlieren (BOS), BK117 helicopter | ||||||||||||
Event Title: | American Helicopter Society 56th Annual Forum | ||||||||||||
Event Location: | Virginia Beach, VA, USA | ||||||||||||
Event Type: | international Conference | ||||||||||||
Event Dates: | 2.-4. Mai 2000 | ||||||||||||
Organizer: | American Helicopter Society (AHS) | ||||||||||||
HGF - Research field: | Aeronautics, Space and Transport | ||||||||||||
HGF - Program: | Aeronautics | ||||||||||||
HGF - Program Themes: | rotorcraft | ||||||||||||
DLR - Research area: | Aeronautics | ||||||||||||
DLR - Program: | L RR - Rotorcraft Research | ||||||||||||
DLR - Research theme (Project): | L - The Virtual Aerodynamic Rotorcraft (old) | ||||||||||||
Location: | Göttingen | ||||||||||||
Institutes and Institutions: | Institute for Aerodynamics and Flow Technology > Helicopter, GO Institute for Aerodynamics and Flow Technology > Ground Vehicles | ||||||||||||
Deposited By: | Winkels, Elisabeth | ||||||||||||
Deposited On: | 12 Jul 2019 10:06 | ||||||||||||
Last Modified: | 12 Jul 2019 10:06 |
Repository Staff Only: item control page